doc: MyFirstContribution: fix cmd placement instructions
[git/git.git] / configure.ac
CommitLineData
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1# -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3
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4## Definitions of private macros.
5
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6# GIT_CONF_SUBST(VAL, VAR)
7# ------------------------
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8# Cause the line "VAR=VAL" to be eventually appended to ${config_file}.
9AC_DEFUN([GIT_CONF_SUBST],
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10[AC_REQUIRE([GIT_CONF_SUBST_INIT])
11config_appended_defs="$config_appended_defs${newline}dnl
12$1=m4_if([$#],[1],[${$1}],[$2])"])
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13
14# GIT_CONF_SUBST_INIT
15# -------------------
16# Prepare shell variables and autoconf machine required by later calls
17# to GIT_CONF_SUBST.
18AC_DEFUN([GIT_CONF_SUBST_INIT],
19 [config_appended_defs=; newline='
20'
21 AC_CONFIG_COMMANDS([$config_file],
22 [echo "$config_appended_defs" >> "$config_file"],
23 [config_file=$config_file
24 config_appended_defs="$config_appended_defs"])])
5b2d1314 25
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26# GIT_ARG_SET_PATH(PROGRAM)
27# -------------------------
28# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
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29# Optional second argument allows setting NO_PROGRAM=YesPlease if
30# --without-PROGRAM version used.
657b062d 31AC_DEFUN([GIT_ARG_SET_PATH],
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32 [AC_ARG_WITH([$1],
33 [AS_HELP_STRING([--with-$1=PATH],
34 [provide PATH to $1])],
35 [GIT_CONF_APPEND_PATH([$1], [$2])],
36 [])])
37
657b062d 38# GIT_CONF_APPEND_PATH(PROGRAM)
5b2d1314 39# -----------------------------
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40# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
41# Used by GIT_ARG_SET_PATH(PROGRAM)
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42# Optional second argument allows setting NO_PROGRAM=YesPlease if
43# --without-PROGRAM is used.
657b062d 44AC_DEFUN([GIT_CONF_APPEND_PATH],
5b2d1314 45 [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl
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46 if test "$withval" = "no"; then
47 if test -n "$2"; then
48 GIT_UC_PROGRAM[]_PATH=$withval
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49 AC_MSG_NOTICE([Disabling use of GIT_UC_PROGRAM])
50 GIT_CONF_SUBST([NO_]GIT_UC_PROGRAM, [YesPlease])
51 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [])
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52 else
53 AC_MSG_ERROR([You cannot use git without $1])
54 fi
55 else
56 if test "$withval" = "yes"; then
57 AC_MSG_WARN([You should provide path for --with-$1=PATH])
58 else
59 GIT_UC_PROGRAM[]_PATH=$withval
60 AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval])
7f8cf48c 61 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [$withval])
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62 fi
63 fi
64 m4_popdef([GIT_UC_PROGRAM])])
65
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66# GIT_PARSE_WITH(PACKAGE)
67# -----------------------
68# For use in AC_ARG_WITH action-if-found, for packages default ON.
69# * Set NO_PACKAGE=YesPlease for --without-PACKAGE
70# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
71# * Unset NO_PACKAGE for --with-PACKAGE without ARG
72AC_DEFUN([GIT_PARSE_WITH],
5b2d1314 73 [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl
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74 if test "$withval" = "no"; then
75 NO_[]GIT_UC_PACKAGE=YesPlease
76 elif test "$withval" = "yes"; then
77 NO_[]GIT_UC_PACKAGE=
78 else
79 NO_[]GIT_UC_PACKAGE=
80 GIT_UC_PACKAGE[]DIR=$withval
81 AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval])
7f8cf48c 82 GIT_CONF_SUBST(GIT_UC_PACKAGE[DIR], [$withval])
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83 fi
84 m4_popdef([GIT_UC_PACKAGE])])
85
d79d9e13 86# GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
5b2d1314 87# -----------------------------------------------------
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BW
88# Set VAR to the value specied by --with-WITHNAME.
89# No verification of arguments is performed, but warnings are issued
90# if either 'yes' or 'no' is specified.
91# HELP_TEXT is presented when --help is called.
92# This is a direct way to allow setting variables in the Makefile.
93AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
94[AC_ARG_WITH([$1],
95 [AS_HELP_STRING([--with-$1=VALUE], $3)],
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96 if test -n "$withval"; then
97 if test "$withval" = "yes" -o "$withval" = "no"; then
d79d9e13 98 AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
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99 [a value for $1 ($2). Maybe you do...?])
100 fi
101 AC_MSG_NOTICE([Setting $2 to $withval])
610473a6 102 GIT_CONF_SUBST([$2], [$withval])
d79d9e13 103 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
d3a6db98 104
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105#
106# GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
107# -----------------------------------------
108# Similar to AC_CHECK_FUNC, but on systems that do not generate
109# warnings for missing prototypes (e.g. FreeBSD when compiling without
110# -Wall), it does not work. By looking for function definition in
111# libraries, this problem can be worked around.
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112AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
113 AC_SEARCH_LIBS([$1],,
114 [$2],[$3])
115],[$3])])
918c8120 116
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117#
118# GIT_STASH_FLAGS(BASEPATH_VAR)
119# -----------------------------
120# Allow for easy stashing of LDFLAGS and CPPFLAGS before running
121# tests that may want to take user settings into account.
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122AC_DEFUN([GIT_STASH_FLAGS],[
123if test -n "$1"; then
124 old_CPPFLAGS="$CPPFLAGS"
125 old_LDFLAGS="$LDFLAGS"
126 CPPFLAGS="-I$1/include $CPPFLAGS"
127 LDFLAGS="-L$1/$lib $LDFLAGS"
128fi
129])
130
131dnl
132dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
133dnl -----------------------------
134dnl Restore the stashed *FLAGS values.
135AC_DEFUN([GIT_UNSTASH_FLAGS],[
136if test -n "$1"; then
137 CPPFLAGS="$old_CPPFLAGS"
138 LDFLAGS="$old_LDFLAGS"
139fi
140])
141
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142## Configure body starts here.
143
144AC_PREREQ(2.59)
145AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
146
147AC_CONFIG_SRCDIR([git.c])
148
149config_file=config.mak.autogen
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150config_in=config.mak.in
151
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152GIT_CONF_SUBST([AUTOCONFIGURED], [YesPlease])
153
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154# Directories holding "saner" versions of common or POSIX binaries.
155AC_ARG_WITH([sane-tool-path],
156 [AS_HELP_STRING(
157 [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]],
158 [Directories to prepend to PATH in build system and generated scripts])],
159 [if test "$withval" = "no"; then
160 withval=''
161 else
162 AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval'])
163 fi
610473a6 164 GIT_CONF_SUBST([SANE_TOOL_PATH], [$withval])],
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165 [# If the "--with-sane-tool-path" option was not given, don't touch
166 # SANE_TOOL_PATH here, but let defaults in Makefile take care of it.
167 # This should minimize spurious differences in the behaviour of the
168 # Git build system when configure is used w.r.t. when it is not.
169 :])
170
a20b4d89 171## Site configuration related to programs (before tests)
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172## --with-PACKAGE[=ARG] and --without-PACKAGE
173#
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174# Set lib to alternative name of lib directory (e.g. lib64)
175AC_ARG_WITH([lib],
176 [AS_HELP_STRING([--with-lib=ARG],
177 [ARG specifies alternative name for lib directory])],
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178 [if test "$withval" = "no" || test "$withval" = "yes"; then
179 AC_MSG_WARN([You should provide name for --with-lib=ARG])
180 else
181 lib=$withval
182 AC_MSG_NOTICE([Setting lib to '$lib'])
3a34c2bf 183 GIT_CONF_SUBST([lib])
5b2d1314 184 fi])
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185
186if test -z "$lib"; then
187 AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
188 lib=lib
189fi
08df6a30 190
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191AC_ARG_ENABLE([pthreads],
192 [AS_HELP_STRING([--enable-pthreads=FLAGS],
193 [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
194 [The default if FLAGS is not specified is to try first -pthread]
195 [and then -lpthread.]
94b54047 196 [--disable-pthreads will disable threading.])],
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197[
198if test "x$enableval" = "xyes"; then
199 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
200elif test "x$enableval" != "xno"; then
201 PTHREAD_CFLAGS=$enableval
202 AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
203else
204 AC_MSG_NOTICE([POSIX Threads will be disabled.])
205 NO_PTHREADS=YesPlease
206 USER_NOPTHREAD=1
207fi],
208[
209 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
210])
211
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212# Define option to enable JavaScript minification
213AC_ARG_ENABLE([jsmin],
214[AS_HELP_STRING([--enable-jsmin=PATH],
215 [PATH is the name of a JavaScript minifier or the absolute path to one.])],
216[
217 JSMIN=$enableval;
218 AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
3a34c2bf 219 GIT_CONF_SUBST([JSMIN])
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220])
221
222# Define option to enable CSS minification
223AC_ARG_ENABLE([cssmin],
224[AS_HELP_STRING([--enable-cssmin=PATH],
225 [PATH is the name of a CSS minifier or the absolute path to one.])],
226[
227 CSSMIN=$enableval;
228 AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
3a34c2bf 229 GIT_CONF_SUBST([CSSMIN])
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230])
231
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232## Site configuration (override autodetection)
233## --with-PACKAGE[=ARG] and --without-PACKAGE
234AC_MSG_NOTICE([CHECKS for site configuration])
235#
236# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
237# tests. These tests take up a significant amount of the total test time
238# but are not needed unless you plan to talk to SVN repos.
239#
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240# Define PPC_SHA1 environment variable when running make to make use of
241# a bundled SHA1 routine optimized for PowerPC.
242#
08df6a30 243# Define NO_OPENSSL environment variable if you do not have OpenSSL.
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244#
245# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
246# /foo/bar/include and /foo/bar/lib directories.
247AC_ARG_WITH(openssl,
248AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
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249AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),
250GIT_PARSE_WITH([openssl]))
251
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252# Define USE_LIBPCRE if you have and want to use libpcre. Various
253# commands such as log and grep offer runtime options to use
254# Perl-compatible regular expressions instead of standard or extended
255# POSIX regular expressions.
a119f91e 256#
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257# USE_LIBPCRE is a synonym for USE_LIBPCRE2, define USE_LIBPCRE1
258# instead if you'd like to use the legacy version 1 of the PCRE
259# library. Support for version 1 will likely be removed in some future
260# release of Git, as upstream has all but abandoned it.
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261#
262# Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
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263# /foo/bar/include and /foo/bar/lib directories.
264#
265AC_ARG_WITH(libpcre,
e6c531b8 266AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre2]),
94da9193 267 if test "$withval" = "no"; then
e6c531b8 268 USE_LIBPCRE2=
94da9193 269 elif test "$withval" = "yes"; then
e6c531b8 270 USE_LIBPCRE2=YesPlease
94da9193 271 else
e6c531b8 272 USE_LIBPCRE2=YesPlease
94da9193
ÆAB
273 LIBPCREDIR=$withval
274 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
e6c531b8 275 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
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276 dnl it yet.
277 GIT_CONF_SUBST([LIBPCREDIR])
278 fi)
279
280AC_ARG_WITH(libpcre1,
281AS_HELP_STRING([--with-libpcre1],[support Perl-compatible regexes via libpcre1 (default is NO)])
282AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
283 if test "$withval" = "no"; then
284 USE_LIBPCRE1=
285 elif test "$withval" = "yes"; then
286 USE_LIBPCRE1=YesPlease
287 else
288 USE_LIBPCRE1=YesPlease
289 LIBPCREDIR=$withval
290 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
291 dnl USE_LIBPCRE1 can still be modified below, so don't substitute
292 dnl it yet.
293 GIT_CONF_SUBST([LIBPCREDIR])
294 fi)
295
296AC_ARG_WITH(libpcre2,
297AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)])
a119f91e 298AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
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ÆAB
299 if test -n "$USE_LIBPCRE2"; then
300 AC_MSG_ERROR([Only supply one of --with-libpcre or its synonym --with-libpcre2!])
301 fi
302
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ÆAB
303 if test -n "$USE_LIBPCRE1"; then
304 AC_MSG_ERROR([Only supply one of --with-libpcre1 or --with-libpcre2!])
305 fi
306
5b2d1314 307 if test "$withval" = "no"; then
94da9193 308 USE_LIBPCRE2=
5b2d1314 309 elif test "$withval" = "yes"; then
94da9193 310 USE_LIBPCRE2=YesPlease
5b2d1314 311 else
94da9193 312 USE_LIBPCRE2=YesPlease
5b2d1314 313 LIBPCREDIR=$withval
3a34c2bf 314 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
94da9193 315 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
40bfbde9 316 dnl it yet.
3a34c2bf 317 GIT_CONF_SUBST([LIBPCREDIR])
5b2d1314 318 fi)
a119f91e 319#
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320# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
321AC_FUNC_ALLOCA
322case $ac_cv_working_alloca_h in
323 yes) HAVE_ALLOCA_H=YesPlease;;
324 *) HAVE_ALLOCA_H='';;
325esac
326GIT_CONF_SUBST([HAVE_ALLOCA_H])
327#
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328# Define NO_CURL if you do not have curl installed. git-http-pull and
329# git-http-push are not built, and you cannot use http:// and https://
330# transports.
331#
332# Define CURLDIR=/foo/bar if your curl header and library files are in
333# /foo/bar/include and /foo/bar/lib directories.
334AC_ARG_WITH(curl,
335AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
336AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
337GIT_PARSE_WITH(curl))
338#
339# Define NO_EXPAT if you do not have expat installed. git-http-push is
340# not built, and you cannot push using http:// and https:// transports.
341#
342# Define EXPATDIR=/foo/bar if your expat header and library files are in
343# /foo/bar/include and /foo/bar/lib directories.
344AC_ARG_WITH(expat,
345AS_HELP_STRING([--with-expat],
346[support git-push using http:// and https:// transports via WebDAV (default is YES)])
347AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
348GIT_PARSE_WITH(expat))
349#
350# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
351# installed in /sw, but don't want GIT to link against any libraries
352# installed there. If defined you may specify your own (or Fink's)
353# include directories and library directories by defining CFLAGS
354# and LDFLAGS appropriately.
355#
356# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
357# have DarwinPorts installed in /opt/local, but don't want GIT to
358# link against any libraries installed there. If defined you may
359# specify your own (or DarwinPort's) include directories and
360# library directories by defining CFLAGS and LDFLAGS appropriately.
361#
362# Define NO_MMAP if you want to avoid mmap.
363#
364# Define NO_ICONV if your libc does not properly support iconv.
365AC_ARG_WITH(iconv,
366AS_HELP_STRING([--without-iconv],
367[if your architecture doesn't properly support iconv])
368AS_HELP_STRING([--with-iconv=PATH],
369[PATH is prefix for libiconv library and headers])
370AS_HELP_STRING([],
371[used only if you need linking with libiconv]),
372GIT_PARSE_WITH(iconv))
373
374## --enable-FEATURE[=ARG] and --disable-FEATURE
375#
376# Define USE_NSEC below if you want git to care about sub-second file mtimes
377# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
378# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
379# randomly break unless your underlying filesystem supports those sub-second
380# times (my ext3 doesn't).
381#
382# Define USE_STDEV below if you want git to care about the underlying device
383# change being considered an inode change from the update-index perspective.
384
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385#
386# Allow user to set ETC_GITCONFIG variable
387GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
388 Use VALUE instead of /etc/gitconfig as the
389 global git configuration file.
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390 If VALUE is not fully qualified it will be interpreted
391 as a path relative to the computed prefix at runtime.)
392
393#
394# Allow user to set ETC_GITATTRIBUTES variable
395GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
396 Use VALUE instead of /etc/gitattributes as the
397 global git attributes file.
398 If VALUE is not fully qualified it will be interpreted
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399 as a path relative to the computed prefix at runtime.)
400
401#
402# Allow user to set the default pager
403GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
404 Use VALUE as the fall-back pager instead of 'less'.
405 This is used by things like 'git log' when the user
406 does not specify a pager to use through alternate
407 methods. eg: /usr/bin/pager)
408#
409# Allow user to set the default editor
410GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
411 Use VALUE as the fall-back editor instead of 'vi'.
412 This is used by things like 'git commit' when the user
413 does not specify a preferred editor through other
414 methods. eg: /usr/bin/editor)
415
10861bea 416#
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417# Define SHELL_PATH to provide path to shell.
418GIT_ARG_SET_PATH(shell)
419#
420# Define PERL_PATH to provide path to Perl.
421GIT_ARG_SET_PATH(perl)
422#
d4e1b47a 423# Define PYTHON_PATH to provide path to Python.
dc78250f 424GIT_ARG_SET_PATH(python, allow-without)
d4e1b47a 425#
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426# Define ZLIB_PATH to provide path to zlib.
427GIT_ARG_SET_PATH(zlib)
428#
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429# Declare the with-tcltk/without-tcltk options.
430AC_ARG_WITH(tcltk,
431AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
432AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
433AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
5b2d1314 434AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
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435GIT_PARSE_WITH(tcltk))
436#
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437
438
633b4239 439## Checks for programs.
fd22c027 440AC_MSG_NOTICE([CHECKS for programs])
f6719572 441#
60a144f2 442AC_PROG_CC([cc gcc])
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443AC_C_INLINE
444case $ac_cv_c_inline in
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445 inline | yes | no) INLINE='';;
446 *) INLINE=$ac_cv_c_inline ;;
f9f33cdc 447esac
40bfbde9 448GIT_CONF_SUBST([INLINE])
f9f33cdc 449
798a9450 450# which switch to pass runtime path to dynamic libraries to the linker
a1a587ef 451AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
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GF
452 SAVE_LDFLAGS="${LDFLAGS}"
453 LDFLAGS="${SAVE_LDFLAGS} -R /"
1e58dba1 454 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
798a9450
GF
455 LDFLAGS="${SAVE_LDFLAGS}"
456])
a1a587ef 457if test "$git_cv_ld_dashr" = "yes"; then
40bfbde9 458 CC_LD_DYNPATH=-R
798a9450 459else
a1a587ef 460 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
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GF
461 SAVE_LDFLAGS="${LDFLAGS}"
462 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
1e58dba1 463 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
50a4b352 464 LDFLAGS="${SAVE_LDFLAGS}"
798a9450 465 ])
a1a587ef 466 if test "$git_cv_ld_wl_rpath" = "yes"; then
9979a507 467 CC_LD_DYNPATH=-Wl,-rpath,
798a9450 468 else
a1a587ef 469 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
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GF
470 SAVE_LDFLAGS="${LDFLAGS}"
471 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
1e58dba1 472 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
50a4b352 473 LDFLAGS="${SAVE_LDFLAGS}"
798a9450 474 ])
a1a587ef 475 if test "$git_cv_ld_rpath" = "yes"; then
40bfbde9 476 CC_LD_DYNPATH=-rpath
798a9450 477 else
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478 AC_CACHE_CHECK([if linker supports -Wl,+b,], git_cv_ld_wl_b, [
479 SAVE_LDFLAGS="${LDFLAGS}"
480 LDFLAGS="${SAVE_LDFLAGS} -Wl,+b,/"
481 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_b=yes], [git_cv_ld_wl_b=no])
482 LDFLAGS="${SAVE_LDFLAGS}"
483 ])
484 if test "$git_cv_ld_wl_b" = "yes"; then
485 CC_LD_DYNPATH=-Wl,+b,
486 else
487 CC_LD_DYNPATH=
488 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
489 fi
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490 fi
491 fi
492fi
40bfbde9 493GIT_CONF_SUBST([CC_LD_DYNPATH])
fd22c027 494#AC_PROG_INSTALL # needs install-sh or install.sh in sources
96e24abc 495AC_CHECK_TOOLS(AR, [gar ar], :)
fd22c027 496AC_CHECK_PROGS(TAR, [gtar tar])
d1b1a919 497AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
81b63c70
ER
498# TCLTK_PATH will be set to some value if we want Tcl/Tk
499# or will be empty otherwise.
40bfbde9
SL
500if test -n "$NO_TCLTK"; then
501 TCLTK_PATH=
502else
81b63c70
ER
503 if test "$with_tcltk" = ""; then
504 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
505 TCLTK_PATH=wish
81b63c70
ER
506 elif test "$with_tcltk" = "yes"; then
507 # Tcl/Tk check requested.
508 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
68daee08 509 else
81b63c70
ER
510 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
511 TCLTK_PATH="$with_tcltk"
81b63c70
ER
512 fi
513fi
40bfbde9 514GIT_CONF_SUBST([TCLTK_PATH])
923db42e
JN
515AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
516if test -n "$ASCIIDOC"; then
517 AC_MSG_CHECKING([for asciidoc version])
29adc8ba 518 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
923db42e 519 case "${asciidoc_version}" in
79c461d5 520 asciidoc' '8*)
923db42e
JN
521 AC_MSG_RESULT([${asciidoc_version}])
522 ;;
523 *)
923db42e
JN
524 AC_MSG_RESULT([${asciidoc_version} (unknown)])
525 ;;
526 esac
527fi
923db42e 528
71b40103
JH
529if grep -a ascii configure.ac >/dev/null; then
530 AC_MSG_RESULT([Using 'grep -a' for sane_grep])
531 SANE_TEXT_GREP=-a
532else
533 SANE_TEXT_GREP=
534fi
535GIT_CONF_SUBST([SANE_TEXT_GREP])
633b4239
JN
536
537## Checks for libraries.
ebdf5321 538AC_MSG_NOTICE([CHECKS for libraries])
f6719572 539#
633b4239 540# Define NO_OPENSSL environment variable if you do not have OpenSSL.
ebdf5321 541# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
310386f0
BW
542
543GIT_STASH_FLAGS($OPENSSLDIR)
544
d5c31a1c 545AC_CHECK_LIB([crypto], [SHA1_Init],
424adc50 546[NEEDS_SSL_WITH_CRYPTO=],
3068f6c4 547[AC_CHECK_LIB([ssl], [SHA1_Init],
40bfbde9
SL
548 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
549 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
310386f0
BW
550
551GIT_UNSTASH_FLAGS($OPENSSLDIR)
552
40bfbde9
SL
553GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
554GIT_CONF_SUBST([NO_OPENSSL])
310386f0 555
a119f91e 556#
94da9193
ÆAB
557# Handle the USE_LIBPCRE1 and USE_LIBPCRE2 options potentially set
558# above.
a119f91e
MK
559#
560
94da9193 561if test -n "$USE_LIBPCRE1"; then
a119f91e
MK
562
563GIT_STASH_FLAGS($LIBPCREDIR)
564
565AC_CHECK_LIB([pcre], [pcre_version],
a91b1133
ÆAB
566[USE_LIBPCRE1=YesPlease],
567[USE_LIBPCRE1=])
a119f91e
MK
568
569GIT_UNSTASH_FLAGS($LIBPCREDIR)
570
94da9193
ÆAB
571GIT_CONF_SUBST([USE_LIBPCRE1])
572
573fi
574
575
576if test -n "$USE_LIBPCRE2"; then
577
578GIT_STASH_FLAGS($LIBPCREDIR)
579
580AC_CHECK_LIB([pcre2-8], [pcre2_config_8],
581[USE_LIBPCRE2=YesPlease],
582[USE_LIBPCRE2=])
583
584GIT_UNSTASH_FLAGS($LIBPCREDIR)
585
586GIT_CONF_SUBST([USE_LIBPCRE2])
a119f91e
MK
587
588fi
589
f6719572 590#
8da1e212 591# Define NO_CURL if you do not have libcurl installed. git-http-pull and
633b4239
JN
592# git-http-push are not built, and you cannot use http:// and https://
593# transports.
310386f0
BW
594
595GIT_STASH_FLAGS($CURLDIR)
596
d5c31a1c 597AC_CHECK_LIB([curl], [curl_global_init],
424adc50
JN
598[NO_CURL=],
599[NO_CURL=YesPlease])
310386f0
BW
600
601GIT_UNSTASH_FLAGS($CURLDIR)
602
40bfbde9 603GIT_CONF_SUBST([NO_CURL])
310386f0 604
f8915876
RP
605if test -z "$NO_CURL"; then
606
607AC_CHECK_PROG([CURL_CONFIG], [curl-config],
608[curl-config],
609[no])
610
611if test $CURL_CONFIG != no; then
612 GIT_CONF_SUBST([CURL_CONFIG])
23c4bbe2
JK
613
614 if test -z "$CURL_CONFIG_OPTS"; then
615 CURL_CONFIG_OPTS="--libs"
924b7eb1 616 fi
23c4bbe2
JK
617
618 CURL_LDFLAGS=$($CURL_CONFIG $CURL_CONFIG_OPTS)
619 AC_MSG_NOTICE([Setting CURL_LDFLAGS to '$CURL_LDFLAGS'])
620 GIT_CONF_SUBST([CURL_LDFLAGS], [$CURL_LDFLAGS])
f8915876
RP
621fi
622
623fi
624
625
f6719572 626#
633b4239
JN
627# Define NO_EXPAT if you do not have expat installed. git-http-push is
628# not built, and you cannot push using http:// and https:// transports.
310386f0
BW
629
630GIT_STASH_FLAGS($EXPATDIR)
631
d5c31a1c 632AC_CHECK_LIB([expat], [XML_ParserCreate],
424adc50
JN
633[NO_EXPAT=],
634[NO_EXPAT=YesPlease])
310386f0
BW
635
636GIT_UNSTASH_FLAGS($EXPATDIR)
637
40bfbde9 638GIT_CONF_SUBST([NO_EXPAT])
310386f0 639
f6719572 640#
e63ccb84
FK
641# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
642# some Solaris installations).
6ff88de7 643# Define NO_ICONV if neither libc nor libiconv support iconv.
310386f0 644
934f82a7
MN
645if test -z "$NO_ICONV"; then
646
310386f0
BW
647GIT_STASH_FLAGS($ICONVDIR)
648
1e58dba1
RW
649AC_DEFUN([ICONVTEST_SRC],
650[AC_LANG_PROGRAM([#include <iconv.h>],
651 [iconv_open("", "");])])
a8304f7a
BW
652
653if test -n "$ICONVDIR"; then
654 lib_order="-liconv -lc"
655else
656 lib_order="-lc -liconv"
657fi
658
659NO_ICONV=YesPlease
660
661for l in $lib_order; do
662 if test "$l" = "-liconv"; then
663 NEEDS_LIBICONV=YesPlease
664 else
665 NEEDS_LIBICONV=
666 fi
667
668 old_LIBS="$LIBS"
669 LIBS="$LIBS $l"
670 AC_MSG_CHECKING([for iconv in $l])
1e58dba1 671 AC_LINK_IFELSE([ICONVTEST_SRC],
e63ccb84 672 [AC_MSG_RESULT([yes])
a8304f7a
BW
673 NO_ICONV=
674 break],
675 [AC_MSG_RESULT([no])])
676 LIBS="$old_LIBS"
677done
678
679#in case of break
680LIBS="$old_LIBS"
310386f0
BW
681
682GIT_UNSTASH_FLAGS($ICONVDIR)
683
40bfbde9
SL
684GIT_CONF_SUBST([NEEDS_LIBICONV])
685GIT_CONF_SUBST([NO_ICONV])
310386f0 686
934f82a7
MN
687if test -n "$NO_ICONV"; then
688 NEEDS_LIBICONV=
689fi
690
691fi
692
f6719572 693#
609a2289 694# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
310386f0
BW
695
696GIT_STASH_FLAGS($ZLIB_PATH)
697
609a2289 698AC_DEFUN([ZLIBTEST_SRC], [
1e58dba1
RW
699AC_LANG_PROGRAM([#include <zlib.h>],
700 [deflateBound(0, 0);])])
609a2289
DS
701AC_MSG_CHECKING([for deflateBound in -lz])
702old_LIBS="$LIBS"
703LIBS="$LIBS -lz"
1e58dba1 704AC_LINK_IFELSE([ZLIBTEST_SRC],
609a2289
DS
705 [AC_MSG_RESULT([yes])],
706 [AC_MSG_RESULT([no])
707 NO_DEFLATE_BOUND=yes])
708LIBS="$old_LIBS"
310386f0
BW
709
710GIT_UNSTASH_FLAGS($ZLIB_PATH)
711
40bfbde9 712GIT_CONF_SUBST([NO_DEFLATE_BOUND])
310386f0 713
609a2289 714#
633b4239
JN
715# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
716# Patrick Mauritz).
d5c31a1c 717AC_CHECK_LIB([c], [socket],
424adc50
JN
718[NEEDS_SOCKET=],
719[NEEDS_SOCKET=YesPlease])
40bfbde9 720GIT_CONF_SUBST([NEEDS_SOCKET])
d1b9944d 721test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
633b4239 722
8fccb009 723#
5a857c74
GV
724# The next few tests will define NEEDS_RESOLV if linking with
725# libresolv provides some of the functions we would normally get
726# from libc.
727NEEDS_RESOLV=
5a857c74
GV
728#
729# Define NO_INET_NTOP if linking with -lresolv is not enough.
730# Solaris 2.7 in particular hos inet_ntop in -lresolv.
731NO_INET_NTOP=
5a857c74 732AC_CHECK_FUNC([inet_ntop],
40bfbde9 733 [],
5a857c74 734 [AC_CHECK_LIB([resolv], [inet_ntop],
40bfbde9 735 [NEEDS_RESOLV=YesPlease],
5a857c74
GV
736 [NO_INET_NTOP=YesPlease])
737])
40bfbde9 738GIT_CONF_SUBST([NO_INET_NTOP])
5a857c74
GV
739#
740# Define NO_INET_PTON if linking with -lresolv is not enough.
741# Solaris 2.7 in particular hos inet_pton in -lresolv.
742NO_INET_PTON=
5a857c74 743AC_CHECK_FUNC([inet_pton],
40bfbde9 744 [],
5a857c74 745 [AC_CHECK_LIB([resolv], [inet_pton],
40bfbde9 746 [NEEDS_RESOLV=YesPlease],
5a857c74
GV
747 [NO_INET_PTON=YesPlease])
748])
40bfbde9 749GIT_CONF_SUBST([NO_INET_PTON])
0a9b167e
GV
750#
751# Define NO_HSTRERROR if linking with -lresolv is not enough.
752# Solaris 2.6 in particular has no hstrerror, even in -lresolv.
753NO_HSTRERROR=
754AC_CHECK_FUNC([hstrerror],
40bfbde9 755 [],
0a9b167e 756 [AC_CHECK_LIB([resolv], [hstrerror],
40bfbde9 757 [NEEDS_RESOLV=YesPlease],
0a9b167e
GV
758 [NO_HSTRERROR=YesPlease])
759])
40bfbde9
SL
760GIT_CONF_SUBST([NO_HSTRERROR])
761
762dnl This must go after all the possible places for its initialization,
763dnl in the AC_CHECK_FUNC invocations above.
764GIT_CONF_SUBST([NEEDS_RESOLV])
5a857c74
GV
765#
766# If any of the above tests determined that -lresolv is needed at
767# build-time, also set it here for remaining configure-time checks.
8fccb009 768test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
633b4239 769
a1142892 770AC_CHECK_LIB([c], [basename],
ecc395c1
BC
771[NEEDS_LIBGEN=],
772[NEEDS_LIBGEN=YesPlease])
40bfbde9 773GIT_CONF_SUBST([NEEDS_LIBGEN])
ecc395c1
BC
774test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
775
b71e56a6
VK
776AC_DEFUN([LIBINTL_SRC], [
777AC_LANG_PROGRAM([[
778#include <libintl.h>
779]],[[
780char *msg = gettext("test");
781]])])
782
783AC_MSG_CHECKING([if libc contains libintl])
784AC_LINK_IFELSE([LIBINTL_SRC],
785 [AC_MSG_RESULT([yes])
786 LIBC_CONTAINS_LIBINTL=YesPlease],
787 [AC_MSG_RESULT([no])
788 LIBC_CONTAINS_LIBINTL=])
40bfbde9 789GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
a8356d43
JS
790
791#
792# Define NO_GETTEXT if you don't want Git output to be translated.
793# A translated Git requires GNU libintl or another gettext implementation
794AC_CHECK_HEADER([libintl.h],
795[NO_GETTEXT=],
796[NO_GETTEXT=YesPlease])
40bfbde9 797GIT_CONF_SUBST([NO_GETTEXT])
a8356d43
JS
798
799if test -z "$NO_GETTEXT"; then
800 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
801fi
5e9637c6 802
633b4239 803## Checks for header files.
0f7a9c9b
JN
804AC_MSG_NOTICE([CHECKS for header files])
805#
3cf32374
JN
806# Define NO_SYS_SELECT_H if you don't have sys/select.h.
807AC_CHECK_HEADER([sys/select.h],
808[NO_SYS_SELECT_H=],
809[NO_SYS_SELECT_H=UnfortunatelyYes])
40bfbde9 810GIT_CONF_SUBST([NO_SYS_SELECT_H])
3cf32374 811#
2648ccc2
ĐTCD
812# Define NO_POLL_H if you don't have poll.h
813AC_CHECK_HEADER([poll.h],
814[NO_POLL_H=],
815[NO_POLL_H=UnfortunatelyYes])
816GIT_CONF_SUBST([NO_POLL_H])
817#
25fe66f8
MD
818# Define NO_SYS_POLL_H if you don't have sys/poll.h
819AC_CHECK_HEADER([sys/poll.h],
820[NO_SYS_POLL_H=],
821[NO_SYS_POLL_H=UnfortunatelyYes])
40bfbde9 822GIT_CONF_SUBST([NO_SYS_POLL_H])
25fe66f8
MD
823#
824# Define NO_INTTYPES_H if you don't have inttypes.h
825AC_CHECK_HEADER([inttypes.h],
826[NO_INTTYPES_H=],
827[NO_INTTYPES_H=UnfortunatelyYes])
40bfbde9 828GIT_CONF_SUBST([NO_INTTYPES_H])
25fe66f8 829#
0f7a9c9b
JN
830# Define OLD_ICONV if your library has an old iconv(), where the second
831# (input buffer pointer) parameter is declared with type (const char **).
1e58dba1
RW
832AC_DEFUN([OLDICONVTEST_SRC], [
833AC_LANG_PROGRAM([[
0f7a9c9b
JN
834#include <iconv.h>
835
836extern size_t iconv(iconv_t cd,
837 char **inbuf, size_t *inbytesleft,
838 char **outbuf, size_t *outbytesleft);
1e58dba1 839]], [])])
a8304f7a
BW
840
841GIT_STASH_FLAGS($ICONVDIR)
842
0f7a9c9b 843AC_MSG_CHECKING([for old iconv()])
1e58dba1 844AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
0f7a9c9b
JN
845 [AC_MSG_RESULT([no])],
846 [AC_MSG_RESULT([yes])
847 OLD_ICONV=UnfortunatelyYes])
633b4239 848
a8304f7a
BW
849GIT_UNSTASH_FLAGS($ICONVDIR)
850
40bfbde9 851GIT_CONF_SUBST([OLD_ICONV])
633b4239
JN
852
853## Checks for typedefs, structures, and compiler characteristics.
eb0f255d 854AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
f6719572 855#
e88a135b
GV
856TYPE_SOCKLEN_T
857case $ac_cv_type_socklen_t in
40bfbde9
SL
858 yes) SOCKLEN_T='';;
859 *) SOCKLEN_T=$git_cv_socklen_t_equiv;;
e88a135b 860esac
40bfbde9 861GIT_CONF_SUBST([SOCKLEN_T])
e88a135b 862
6441090c
JST
863#
864# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
865AC_CHECK_TYPES([struct itimerval],
866[NO_STRUCT_ITIMERVAL=],
867[NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
868[#include <sys/time.h>])
869GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
870#
8bd2c972
RH
871# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
872# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
873# stat.st_mtimespec.tv_nsec exists.
874AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
875AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
876if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
877 USE_ST_TIMESPEC=YesPlease
878 GIT_CONF_SUBST([USE_ST_TIMESPEC])
879elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
880 NO_NSEC=YesPlease
881 GIT_CONF_SUBST([NO_NSEC])
882fi
883#
633b4239
JN
884# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
885# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
d5c31a1c 886AC_CHECK_MEMBER(struct dirent.d_type,
424adc50
JN
887[NO_D_TYPE_IN_DIRENT=],
888[NO_D_TYPE_IN_DIRENT=YesPlease],
eb0f255d 889[#include <dirent.h>])
40bfbde9 890GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
f6719572 891#
110d6985
DM
892# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
893# in the C library.
894AC_CHECK_MEMBER(struct passwd.pw_gecos,
895[NO_GECOS_IN_PWENT=],
896[NO_GECOS_IN_PWENT=YesPlease],
897[#include <pwd.h>])
898GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
899#
633b4239
JN
900# Define NO_SOCKADDR_STORAGE if your platform does not have struct
901# sockaddr_storage.
d5c31a1c 902AC_CHECK_TYPE(struct sockaddr_storage,
424adc50 903[NO_SOCKADDR_STORAGE=],
ab5573ae
DS
904[NO_SOCKADDR_STORAGE=YesPlease],[
905#include <sys/types.h>
906#include <sys/socket.h>
907])
40bfbde9 908GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
424adc50 909#
8c6ab35e
JH
910# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
911AC_CHECK_TYPE([struct addrinfo],[
1689c5de 912 GIT_CHECK_FUNC([getaddrinfo],
424adc50
JN
913 [NO_IPV6=],
914 [NO_IPV6=YesPlease])
915],[NO_IPV6=YesPlease],[
8c6ab35e
JH
916#include <sys/types.h>
917#include <sys/socket.h>
918#include <netdb.h>
919])
40bfbde9 920GIT_CONF_SUBST([NO_IPV6])
656517b9 921#
842a516c
JN
922# Define NO_REGEX if your C library lacks regex support with REG_STARTEND
923# feature.
924AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
925 [ac_cv_c_regex_with_reg_startend], [
a1e3b669
JN
926AC_EGREP_CPP(yippeeyeswehaveit,
927 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
928#include <regex.h>
929],
930[#ifdef REG_STARTEND
931yippeeyeswehaveit
932#endif
933]),
842a516c
JN
934 [ac_cv_c_regex_with_reg_startend=yes],
935 [ac_cv_c_regex_with_reg_startend=no])
a1e3b669 936])
842a516c 937if test $ac_cv_c_regex_with_reg_startend = yes; then
a1e3b669
JN
938 NO_REGEX=
939else
940 NO_REGEX=YesPlease
941fi
40bfbde9 942GIT_CONF_SUBST([NO_REGEX])
a1e3b669 943#
8ce1f243
MR
944# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
945# when attempting to read from an fopen'ed directory.
946AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
947 [ac_cv_fread_reads_directories],
948[
949AC_RUN_IFELSE(
950 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
3adf9fde 951 [[
8ce1f243 952 FILE *f = fopen(".", "r");
249482da 953 return f != NULL;]])],
8ce1f243
MR
954 [ac_cv_fread_reads_directories=no],
955 [ac_cv_fread_reads_directories=yes])
956])
957if test $ac_cv_fread_reads_directories = yes; then
958 FREAD_READS_DIRECTORIES=UnfortunatelyYes
959else
960 FREAD_READS_DIRECTORIES=
961fi
40bfbde9 962GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
8ce1f243 963#
c4582f93
MR
964# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
965# or vsnprintf() return -1 instead of number of characters which would
966# have been written to the final string if enough space had been available.
967AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
968 [ac_cv_snprintf_returns_bogus],
969[
970AC_RUN_IFELSE(
971 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
972 #include "stdarg.h"
973
974 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
975 {
976 int ret;
977 va_list ap;
978 va_start(ap, format);
979 ret = vsnprintf(str, maxsize, format, ap);
980 va_end(ap);
981 return ret;
982 }],
983 [[char buf[6];
984 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
985 || strcmp(buf, "12")) return 1;
986 if (snprintf(buf, 3, "%s", "12345") != 5
987 || strcmp(buf, "12")) return 1]])],
988 [ac_cv_snprintf_returns_bogus=no],
989 [ac_cv_snprintf_returns_bogus=yes])
990])
991if test $ac_cv_snprintf_returns_bogus = yes; then
992 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
993else
994 SNPRINTF_RETURNS_BOGUS=
995fi
40bfbde9 996GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
d543d9c0
DM
997#
998# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
999# bits in mode values.
1000AC_CACHE_CHECK([whether the platform uses typical file type bits],
1001 [ac_cv_sane_mode_bits], [
1002AC_EGREP_CPP(yippeeyeswehaveit,
1003 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1004[#if S_IFMT == 0170000 && \
1005 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
1006 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
1007 S_IFIFO == 0010000 && S_IFSOCK == 0140000
1008yippeeyeswehaveit
1009#endif
1010]),
1011 [ac_cv_sane_mode_bits=yes],
1012 [ac_cv_sane_mode_bits=no])
1013])
1014if test $ac_cv_sane_mode_bits = yes; then
1015 NEEDS_MODE_TRANSLATION=
1016else
1017 NEEDS_MODE_TRANSLATION=UnfortunatelyYes
1018fi
1019GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
633b4239 1020
a20b4d89 1021
633b4239 1022## Checks for library functions.
1bbbadbc
JN
1023## (in default C library and libraries checked by AC_CHECK_LIB)
1024AC_MSG_NOTICE([CHECKS for library functions])
f6719572 1025#
e1c06886
DA
1026# Define NO_LIBGEN_H if you don't have libgen.h.
1027AC_CHECK_HEADER([libgen.h],
1028[NO_LIBGEN_H=],
1029[NO_LIBGEN_H=YesPlease])
40bfbde9 1030GIT_CONF_SUBST([NO_LIBGEN_H])
e1c06886 1031#
bb15e382
JN
1032# Define HAVE_PATHS_H if you have paths.h.
1033AC_CHECK_HEADER([paths.h],
1034[HAVE_PATHS_H=YesPlease],
1035[HAVE_PATHS_H=])
40bfbde9 1036GIT_CONF_SUBST([HAVE_PATHS_H])
bb15e382 1037#
5e9637c6
ÆAB
1038# Define HAVE_LIBCHARSET_H if have libcharset.h
1039AC_CHECK_HEADER([libcharset.h],
1040[HAVE_LIBCHARSET_H=YesPlease],
1041[HAVE_LIBCHARSET_H=])
40bfbde9 1042GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
b3e103da
DM
1043#
1044# Define HAVE_STRINGS_H if you have strings.h
1045AC_CHECK_HEADER([strings.h],
1046[HAVE_STRINGS_H=YesPlease],
1047[HAVE_STRINGS_H=])
1048GIT_CONF_SUBST([HAVE_STRINGS_H])
b5225286
ДП
1049# Define CHARSET_LIB if libiconv does not export the locale_charset symbol
1050# and libcharset does
1051CHARSET_LIB=
1052AC_CHECK_LIB([iconv], [locale_charset],
62fb6d03 1053 [CHARSET_LIB=-liconv],
b5225286 1054 [AC_CHECK_LIB([charset], [locale_charset],
40bfbde9
SL
1055 [CHARSET_LIB=-lcharset])])
1056GIT_CONF_SUBST([CHARSET_LIB])
5e9637c6 1057#
a6c3c638
RH
1058# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
1059GIT_CHECK_FUNC(clock_gettime,
1060 [HAVE_CLOCK_GETTIME=YesPlease],
1061 [HAVE_CLOCK_GETTIME=])
1062GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
1063
1064AC_DEFUN([CLOCK_MONOTONIC_SRC], [
1065AC_LANG_PROGRAM([[
1066#include <time.h>
1067clockid_t id = CLOCK_MONOTONIC;
1068]])])
1069
1070#
1071# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
1072AC_MSG_CHECKING([for CLOCK_MONOTONIC])
1073AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
1074 [AC_MSG_RESULT([yes])
1075 HAVE_CLOCK_MONOTONIC=YesPlease],
1076 [AC_MSG_RESULT([no])
1077 HAVE_CLOCK_MONOTONIC=])
1078GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
1079#
a6fd4fb5
JST
1080# Define NO_SETITIMER if you don't have setitimer.
1081GIT_CHECK_FUNC(setitimer,
1082[NO_SETITIMER=],
1083[NO_SETITIMER=YesPlease])
1084GIT_CONF_SUBST([NO_SETITIMER])
1085#
633b4239 1086# Define NO_STRCASESTR if you don't have strcasestr.
1689c5de 1087GIT_CHECK_FUNC(strcasestr,
424adc50
JN
1088[NO_STRCASESTR=],
1089[NO_STRCASESTR=YesPlease])
40bfbde9 1090GIT_CONF_SUBST([NO_STRCASESTR])
f6719572 1091#
24397556 1092# Define NO_MEMMEM if you don't have memmem.
1689c5de 1093GIT_CHECK_FUNC(memmem,
24397556
JN
1094[NO_MEMMEM=],
1095[NO_MEMMEM=YesPlease])
40bfbde9 1096GIT_CONF_SUBST([NO_MEMMEM])
24397556 1097#
633b4239 1098# Define NO_STRLCPY if you don't have strlcpy.
1689c5de 1099GIT_CHECK_FUNC(strlcpy,
424adc50
JN
1100[NO_STRLCPY=],
1101[NO_STRLCPY=YesPlease])
40bfbde9 1102GIT_CONF_SUBST([NO_STRLCPY])
f6719572 1103#
0bc3e781
DS
1104# Define NO_UINTMAX_T if your platform does not have uintmax_t
1105AC_CHECK_TYPE(uintmax_t,
1106[NO_UINTMAX_T=],
1107[NO_UINTMAX_T=YesPlease],[
1108#include <inttypes.h>
1109])
40bfbde9 1110GIT_CONF_SUBST([NO_UINTMAX_T])
0bc3e781 1111#
24397556 1112# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1689c5de 1113GIT_CHECK_FUNC(strtoumax,
24397556
JN
1114[NO_STRTOUMAX=],
1115[NO_STRTOUMAX=YesPlease])
40bfbde9 1116GIT_CONF_SUBST([NO_STRTOUMAX])
24397556 1117#
633b4239 1118# Define NO_SETENV if you don't have setenv in the C library.
1689c5de 1119GIT_CHECK_FUNC(setenv,
424adc50
JN
1120[NO_SETENV=],
1121[NO_SETENV=YesPlease])
40bfbde9 1122GIT_CONF_SUBST([NO_SETENV])
f6719572 1123#
bfa8fccf 1124# Define NO_UNSETENV if you don't have unsetenv in the C library.
1689c5de 1125GIT_CHECK_FUNC(unsetenv,
bfa8fccf
JN
1126[NO_UNSETENV=],
1127[NO_UNSETENV=YesPlease])
40bfbde9 1128GIT_CONF_SUBST([NO_UNSETENV])
bfa8fccf 1129#
24397556 1130# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1689c5de 1131GIT_CHECK_FUNC(mkdtemp,
24397556
JN
1132[NO_MKDTEMP=],
1133[NO_MKDTEMP=YesPlease])
40bfbde9 1134GIT_CONF_SUBST([NO_MKDTEMP])
24397556 1135#
25fe66f8
MD
1136# Define NO_INITGROUPS if you don't have initgroups in the C library.
1137GIT_CHECK_FUNC(initgroups,
1138[NO_INITGROUPS=],
1139[NO_INITGROUPS=YesPlease])
40bfbde9 1140GIT_CONF_SUBST([NO_INITGROUPS])
25fe66f8 1141#
96658060
ES
1142# Define HAVE_GETDELIM if you have getdelim in the C library.
1143GIT_CHECK_FUNC(getdelim,
1144[HAVE_GETDELIM=YesPlease],
1145[HAVE_GETDELIM=])
1146GIT_CONF_SUBST([HAVE_GETDELIM])
1147#
0620b39b 1148#
633b4239
JN
1149# Define NO_MMAP if you want to avoid mmap.
1150#
633b4239
JN
1151# Define NO_ICONV if your libc does not properly support iconv.
1152
9529080d
KM
1153AC_DEFUN([BSD_SYSCTL_SRC], [
1154AC_LANG_PROGRAM([[
1155#include <stddef.h>
1156#include <sys/types.h>
1157#include <sys/sysctl.h>
1158]],[[
1159int val, mib[2];
1160size_t len;
1161mib[0] = CTL_HW;
1162mib[1] = 1;
1163len = sizeof(val);
1164return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1165]])])
1166
1167#
1168# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1169AC_MSG_CHECKING([for BSD sysctl])
1170AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1171 [AC_MSG_RESULT([yes])
1172 HAVE_BSD_SYSCTL=YesPlease],
1173 [AC_MSG_RESULT([no])
1174 HAVE_BSD_SYSCTL=])
1175GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
633b4239
JN
1176
1177## Other checks.
1178# Define USE_PIC if you need the main git objects to be built with -fPIC
1179# in order to build and link perl/Git.so. x86-64 seems to need this.
1180#
1181# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1182# Enable it on Windows. By default, symrefs are still used.
20f7a398 1183#
7eb151d6 1184# Define NO_PTHREADS if we do not have pthreads.
46059cc6 1185#
7eb151d6 1186# Define PTHREAD_LIBS to the linker flag used for Pthread support.
1973b0d7 1187AC_DEFUN([PTHREADTEST_SRC], [
1e58dba1 1188AC_LANG_PROGRAM([[
1973b0d7 1189#include <pthread.h>
a9b02de8 1190static void *noop(void *ignore) { return ignore; }
1e58dba1 1191]], [[
1973b0d7 1192 pthread_mutex_t test_mutex;
cea13a8d 1193 pthread_key_t test_key;
a9b02de8 1194 pthread_t th;
48793cf4 1195 int retcode = 0;
a9b02de8 1196 void *ret = (void *)0;
cea13a8d 1197 retcode |= pthread_key_create(&test_key, (void *)0);
48793cf4
GV
1198 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1199 retcode |= pthread_mutex_lock(&test_mutex);
1200 retcode |= pthread_mutex_unlock(&test_mutex);
a9b02de8
EW
1201 retcode |= pthread_create(&th, ret, noop, ret);
1202 retcode |= pthread_join(th, &ret);
48793cf4 1203 return retcode;
1e58dba1 1204]])])
1973b0d7
BW
1205
1206dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1207dnl [[#include <pthread.h>]],
1208dnl [[pthread_mutex_t test_mutex;]]
1209dnl )])
1210
1211NO_PTHREADS=UnfortunatelyYes
1973b0d7
BW
1212PTHREAD_LIBS=
1213
1214if test -n "$USER_NOPTHREAD"; then
1215 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1216# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1217# -D_REENTRANT' or some such.
1218elif test -z "$PTHREAD_CFLAGS"; then
48793cf4 1219 threads_found=no
e0a52279
MH
1220 # Attempt to compile and link some code using pthreads to determine
1221 # required linker flags. The order is somewhat important here: We
1222 # first try it without any extra flags, to catch systems where
1223 # pthreads are part of the C library, then go on testing various other
1224 # flags. We do so to avoid false positives. For example, on Mac OS X
1225 # pthreads are part of the C library; moreover, the compiler allows us
1226 # to add "-mt" to the CFLAGS (although it will do nothing except
1227 # trigger a warning about an unused flag). Hence if we checked for
1228 # "-mt" before "" we would end up picking it. But unfortunately this
1229 # would then trigger compiler warnings on every single file we compile.
1230 for opt in "" -mt -pthread -lpthread; do
1973b0d7 1231 old_CFLAGS="$CFLAGS"
bac2c5bf
RC
1232 old_LIBS="$LIBS"
1233 case "$opt" in
1234 -l*) LIBS="$opt $LIBS" ;;
1235 *) CFLAGS="$opt $CFLAGS" ;;
1236 esac
1237
49aeead2 1238 AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1e58dba1 1239 AC_LINK_IFELSE([PTHREADTEST_SRC],
1973b0d7
BW
1240 [AC_MSG_RESULT([yes])
1241 NO_PTHREADS=
1242 PTHREAD_LIBS="$opt"
48793cf4
GV
1243 PTHREAD_CFLAGS="$opt"
1244 threads_found=yes
1973b0d7
BW
1245 break
1246 ],
1247 [AC_MSG_RESULT([no])])
1248 CFLAGS="$old_CFLAGS"
bac2c5bf 1249 LIBS="$old_LIBS"
1973b0d7 1250 done
48793cf4
GV
1251 if test $threads_found != yes; then
1252 AC_CHECK_LIB([pthread], [pthread_create],
1253 [PTHREAD_LIBS="-lpthread"],
1254 [NO_PTHREADS=UnfortunatelyYes])
1255 fi
20f7a398 1256else
1973b0d7
BW
1257 old_CFLAGS="$CFLAGS"
1258 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
49aeead2 1259 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1e58dba1 1260 AC_LINK_IFELSE([PTHREADTEST_SRC],
1973b0d7
BW
1261 [AC_MSG_RESULT([yes])
1262 NO_PTHREADS=
1263 PTHREAD_LIBS="$PTHREAD_CFLAGS"
1973b0d7
BW
1264 ],
1265 [AC_MSG_RESULT([no])])
1266
1267 CFLAGS="$old_CFLAGS"
20f7a398 1268fi
1973b0d7
BW
1269
1270CFLAGS="$old_CFLAGS"
1271
40bfbde9
SL
1272GIT_CONF_SUBST([PTHREAD_CFLAGS])
1273GIT_CONF_SUBST([PTHREAD_LIBS])
1274GIT_CONF_SUBST([NO_PTHREADS])
633b4239 1275
633b4239 1276## Output files
ac5fc1c5 1277AC_CONFIG_FILES(["${config_file}":"${config_in}"])
55667714 1278AC_OUTPUT