compat: add a basename() compatibility function
[git/git.git] / configure.ac
CommitLineData
55667714
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1# -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3
4AC_PREREQ(2.59)
3900145e 5AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
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6
7AC_CONFIG_SRCDIR([git.c])
8
9config_file=config.mak.autogen
d3a6db98 10config_append=config.mak.append
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11config_in=config.mak.in
12
d3a6db98
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13echo "# ${config_append}. Generated by configure." > "${config_append}"
14
15
16## Definitions of macros
17# GIT_CONF_APPEND_LINE(LINE)
18# --------------------------
19# Append LINE to file ${config_append}
20AC_DEFUN([GIT_CONF_APPEND_LINE],
21[echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
657b062d
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22#
23# GIT_ARG_SET_PATH(PROGRAM)
24# -------------------------
25# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
26AC_DEFUN([GIT_ARG_SET_PATH],
27[AC_ARG_WITH([$1],
28 [AS_HELP_STRING([--with-$1=PATH],
29 [provide PATH to $1])],
30 [GIT_CONF_APPEND_PATH($1)],[])
31])# GIT_ARG_SET_PATH
32#
33# GIT_CONF_APPEND_PATH(PROGRAM)
34# ------------------------------
35# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
36# Used by GIT_ARG_SET_PATH(PROGRAM)
37AC_DEFUN([GIT_CONF_APPEND_PATH],
38[PROGRAM=m4_toupper($1); \
39if test "$withval" = "no"; then \
b52b1d43 40 AC_MSG_ERROR([You cannot use git without $1]); \
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41else \
42 if test "$withval" = "yes"; then \
43 AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
44 else \
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45 m4_toupper($1)_PATH=$withval; \
46 AC_MSG_NOTICE([Setting m4_toupper($1)_PATH to $withval]); \
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47 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
48 fi; \
49fi; \
50]) # GIT_CONF_APPEND_PATH
a20b4d89
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51#
52# GIT_PARSE_WITH(PACKAGE)
53# -----------------------
54# For use in AC_ARG_WITH action-if-found, for packages default ON.
55# * Set NO_PACKAGE=YesPlease for --without-PACKAGE
56# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
57# * Unset NO_PACKAGE for --with-PACKAGE without ARG
58AC_DEFUN([GIT_PARSE_WITH],
59[PACKAGE=m4_toupper($1); \
60if test "$withval" = "no"; then \
61 m4_toupper(NO_$1)=YesPlease; \
62elif test "$withval" = "yes"; then \
63 m4_toupper(NO_$1)=; \
64else \
65 m4_toupper(NO_$1)=; \
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66 m4_toupper($1)DIR=$withval; \
67 AC_MSG_NOTICE([Setting m4_toupper($1)DIR to $withval]); \
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68 GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
69fi \
70])# GIT_PARSE_WITH
d3a6db98 71
1689c5de
DS
72dnl
73dnl GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
74dnl -----------------------------------------
75dnl Similar to AC_CHECK_FUNC, but on systems that do not generate
76dnl warnings for missing prototypes (e.g. FreeBSD when compiling without
77dnl -Wall), it does not work. By looking for function definition in
78dnl libraries, this problem can be worked around.
79AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
80 AC_SEARCH_LIBS([$1],,
81 [$2],[$3])
82],[$3])])
918c8120
BW
83
84dnl
85dnl GIT_STASH_FLAGS(BASEPATH_VAR)
86dnl -----------------------------
87dnl Allow for easy stashing of LDFLAGS and CPPFLAGS before running
88dnl tests that may want to take user settings into account.
89AC_DEFUN([GIT_STASH_FLAGS],[
90if test -n "$1"; then
91 old_CPPFLAGS="$CPPFLAGS"
92 old_LDFLAGS="$LDFLAGS"
93 CPPFLAGS="-I$1/include $CPPFLAGS"
94 LDFLAGS="-L$1/$lib $LDFLAGS"
95fi
96])
97
98dnl
99dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
100dnl -----------------------------
101dnl Restore the stashed *FLAGS values.
102AC_DEFUN([GIT_UNSTASH_FLAGS],[
103if test -n "$1"; then
104 CPPFLAGS="$old_CPPFLAGS"
105 LDFLAGS="$old_LDFLAGS"
106fi
107])
108
a20b4d89 109## Site configuration related to programs (before tests)
c4b1b140
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110## --with-PACKAGE[=ARG] and --without-PACKAGE
111#
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112# Set lib to alternative name of lib directory (e.g. lib64)
113AC_ARG_WITH([lib],
114 [AS_HELP_STRING([--with-lib=ARG],
115 [ARG specifies alternative name for lib directory])],
3c307bfb 116 [if test "$withval" = "no" || test "$withval" = "yes"; then \
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117 AC_MSG_WARN([You should provide name for --with-lib=ARG]); \
118else \
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BW
119 lib=$withval; \
120 AC_MSG_NOTICE([Setting lib to '$lib']); \
10861bea
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121 GIT_CONF_APPEND_LINE(lib=$withval); \
122fi; \
123],[])
e068f4f5
BW
124
125if test -z "$lib"; then
126 AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
127 lib=lib
128fi
08df6a30 129
1973b0d7
BW
130AC_ARG_ENABLE([pthreads],
131 [AS_HELP_STRING([--enable-pthreads=FLAGS],
132 [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
133 [The default if FLAGS is not specified is to try first -pthread]
134 [and then -lpthread.]
135 [--without-pthreads will disable threading.])],
136[
137if test "x$enableval" = "xyes"; then
138 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
139elif test "x$enableval" != "xno"; then
140 PTHREAD_CFLAGS=$enableval
141 AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
142else
143 AC_MSG_NOTICE([POSIX Threads will be disabled.])
144 NO_PTHREADS=YesPlease
145 USER_NOPTHREAD=1
146fi],
147[
148 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
149])
150
08df6a30
BW
151## Site configuration (override autodetection)
152## --with-PACKAGE[=ARG] and --without-PACKAGE
153AC_MSG_NOTICE([CHECKS for site configuration])
154#
155# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
156# tests. These tests take up a significant amount of the total test time
157# but are not needed unless you plan to talk to SVN repos.
158#
159# Define MOZILLA_SHA1 environment variable when running make to make use of
160# a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
161# on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
162# choice) has very fast version optimized for i586.
163#
164# Define PPC_SHA1 environment variable when running make to make use of
165# a bundled SHA1 routine optimized for PowerPC.
166#
167# Define ARM_SHA1 environment variable when running make to make use of
168# a bundled SHA1 routine optimized for ARM.
169#
170# Define NO_OPENSSL environment variable if you do not have OpenSSL.
171# This also implies MOZILLA_SHA1.
172#
173# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
174# /foo/bar/include and /foo/bar/lib directories.
175AC_ARG_WITH(openssl,
176AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
177AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
178GIT_PARSE_WITH(openssl))
179#
180# Define NO_CURL if you do not have curl installed. git-http-pull and
181# git-http-push are not built, and you cannot use http:// and https://
182# transports.
183#
184# Define CURLDIR=/foo/bar if your curl header and library files are in
185# /foo/bar/include and /foo/bar/lib directories.
186AC_ARG_WITH(curl,
187AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
188AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
189GIT_PARSE_WITH(curl))
190#
191# Define NO_EXPAT if you do not have expat installed. git-http-push is
192# not built, and you cannot push using http:// and https:// transports.
193#
194# Define EXPATDIR=/foo/bar if your expat header and library files are in
195# /foo/bar/include and /foo/bar/lib directories.
196AC_ARG_WITH(expat,
197AS_HELP_STRING([--with-expat],
198[support git-push using http:// and https:// transports via WebDAV (default is YES)])
199AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
200GIT_PARSE_WITH(expat))
201#
202# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
203# installed in /sw, but don't want GIT to link against any libraries
204# installed there. If defined you may specify your own (or Fink's)
205# include directories and library directories by defining CFLAGS
206# and LDFLAGS appropriately.
207#
208# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
209# have DarwinPorts installed in /opt/local, but don't want GIT to
210# link against any libraries installed there. If defined you may
211# specify your own (or DarwinPort's) include directories and
212# library directories by defining CFLAGS and LDFLAGS appropriately.
213#
214# Define NO_MMAP if you want to avoid mmap.
215#
216# Define NO_ICONV if your libc does not properly support iconv.
217AC_ARG_WITH(iconv,
218AS_HELP_STRING([--without-iconv],
219[if your architecture doesn't properly support iconv])
220AS_HELP_STRING([--with-iconv=PATH],
221[PATH is prefix for libiconv library and headers])
222AS_HELP_STRING([],
223[used only if you need linking with libiconv]),
224GIT_PARSE_WITH(iconv))
225
226## --enable-FEATURE[=ARG] and --disable-FEATURE
227#
228# Define USE_NSEC below if you want git to care about sub-second file mtimes
229# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
230# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
231# randomly break unless your underlying filesystem supports those sub-second
232# times (my ext3 doesn't).
233#
234# Define USE_STDEV below if you want git to care about the underlying device
235# change being considered an inode change from the update-index perspective.
236
10861bea 237#
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238# Define SHELL_PATH to provide path to shell.
239GIT_ARG_SET_PATH(shell)
240#
241# Define PERL_PATH to provide path to Perl.
242GIT_ARG_SET_PATH(perl)
243#
bef19da9
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244# Define ZLIB_PATH to provide path to zlib.
245GIT_ARG_SET_PATH(zlib)
246#
81b63c70
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247# Declare the with-tcltk/without-tcltk options.
248AC_ARG_WITH(tcltk,
249AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
250AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
251AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
252AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
253GIT_PARSE_WITH(tcltk))
254#
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255
256
633b4239 257## Checks for programs.
fd22c027 258AC_MSG_NOTICE([CHECKS for programs])
f6719572 259#
60a144f2 260AC_PROG_CC([cc gcc])
798a9450 261# which switch to pass runtime path to dynamic libraries to the linker
a1a587ef 262AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
798a9450
GF
263 SAVE_LDFLAGS="${LDFLAGS}"
264 LDFLAGS="${SAVE_LDFLAGS} -R /"
a1a587ef 265 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
798a9450
GF
266 LDFLAGS="${SAVE_LDFLAGS}"
267])
a1a587ef 268if test "$git_cv_ld_dashr" = "yes"; then
798a9450
GF
269 AC_SUBST(CC_LD_DYNPATH, [-R])
270else
a1a587ef 271 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
798a9450
GF
272 SAVE_LDFLAGS="${LDFLAGS}"
273 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
a1a587ef 274 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
50a4b352 275 LDFLAGS="${SAVE_LDFLAGS}"
798a9450 276 ])
a1a587ef 277 if test "$git_cv_ld_wl_rpath" = "yes"; then
798a9450
GF
278 AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
279 else
a1a587ef 280 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
798a9450
GF
281 SAVE_LDFLAGS="${LDFLAGS}"
282 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
a1a587ef 283 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
50a4b352 284 LDFLAGS="${SAVE_LDFLAGS}"
798a9450 285 ])
a1a587ef 286 if test "$git_cv_ld_rpath" = "yes"; then
798a9450
GF
287 AC_SUBST(CC_LD_DYNPATH, [-rpath])
288 else
289 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
290 fi
291 fi
292fi
fd22c027 293#AC_PROG_INSTALL # needs install-sh or install.sh in sources
96e24abc 294AC_CHECK_TOOLS(AR, [gar ar], :)
fd22c027 295AC_CHECK_PROGS(TAR, [gtar tar])
81b63c70
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296# TCLTK_PATH will be set to some value if we want Tcl/Tk
297# or will be empty otherwise.
298if test -z "$NO_TCLTK"; then
299 if test "$with_tcltk" = ""; then
300 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
301 TCLTK_PATH=wish
302 AC_SUBST(TCLTK_PATH)
303 elif test "$with_tcltk" = "yes"; then
304 # Tcl/Tk check requested.
305 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
68daee08 306 else
81b63c70
ER
307 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
308 TCLTK_PATH="$with_tcltk"
309 AC_SUBST(TCLTK_PATH)
81b63c70
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310 fi
311fi
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312AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
313if test -n "$ASCIIDOC"; then
314 AC_MSG_CHECKING([for asciidoc version])
29adc8ba 315 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
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316 case "${asciidoc_version}" in
317 asciidoc' '8*)
318 ASCIIDOC8=YesPlease
319 AC_MSG_RESULT([${asciidoc_version} > 7])
320 ;;
321 asciidoc' '7*)
322 ASCIIDOC8=
323 AC_MSG_RESULT([${asciidoc_version}])
324 ;;
325 *)
326 ASCIIDOC8=
327 AC_MSG_RESULT([${asciidoc_version} (unknown)])
328 ;;
329 esac
330fi
331AC_SUBST(ASCIIDOC8)
332
633b4239
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333
334## Checks for libraries.
ebdf5321 335AC_MSG_NOTICE([CHECKS for libraries])
f6719572 336#
633b4239 337# Define NO_OPENSSL environment variable if you do not have OpenSSL.
ebdf5321 338# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
310386f0
BW
339
340GIT_STASH_FLAGS($OPENSSLDIR)
341
d5c31a1c 342AC_CHECK_LIB([crypto], [SHA1_Init],
424adc50 343[NEEDS_SSL_WITH_CRYPTO=],
3068f6c4 344[AC_CHECK_LIB([ssl], [SHA1_Init],
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345 [NEEDS_SSL_WITH_CRYPTO=YesPlease
346 NEEDS_SSL_WITH_CRYPTO=],
347 [NO_OPENSSL=YesPlease])])
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348
349GIT_UNSTASH_FLAGS($OPENSSLDIR)
350
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351AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
352AC_SUBST(NO_OPENSSL)
310386f0 353
f6719572 354#
8da1e212 355# Define NO_CURL if you do not have libcurl installed. git-http-pull and
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356# git-http-push are not built, and you cannot use http:// and https://
357# transports.
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358
359GIT_STASH_FLAGS($CURLDIR)
360
d5c31a1c 361AC_CHECK_LIB([curl], [curl_global_init],
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362[NO_CURL=],
363[NO_CURL=YesPlease])
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364
365GIT_UNSTASH_FLAGS($CURLDIR)
366
424adc50 367AC_SUBST(NO_CURL)
310386f0 368
f6719572 369#
633b4239
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370# Define NO_EXPAT if you do not have expat installed. git-http-push is
371# not built, and you cannot push using http:// and https:// transports.
310386f0
BW
372
373GIT_STASH_FLAGS($EXPATDIR)
374
d5c31a1c 375AC_CHECK_LIB([expat], [XML_ParserCreate],
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376[NO_EXPAT=],
377[NO_EXPAT=YesPlease])
310386f0
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378
379GIT_UNSTASH_FLAGS($EXPATDIR)
380
424adc50 381AC_SUBST(NO_EXPAT)
310386f0 382
f6719572 383#
e63ccb84
FK
384# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
385# some Solaris installations).
6ff88de7 386# Define NO_ICONV if neither libc nor libiconv support iconv.
310386f0
BW
387
388GIT_STASH_FLAGS($ICONVDIR)
389
e63ccb84
FK
390AC_DEFUN([ICONVTEST_SRC], [
391#include <iconv.h>
392
393int main(void)
394{
395 iconv_open("", "");
396 return 0;
397}
398])
a8304f7a
BW
399
400if test -n "$ICONVDIR"; then
401 lib_order="-liconv -lc"
402else
403 lib_order="-lc -liconv"
404fi
405
406NO_ICONV=YesPlease
407
408for l in $lib_order; do
409 if test "$l" = "-liconv"; then
410 NEEDS_LIBICONV=YesPlease
411 else
412 NEEDS_LIBICONV=
413 fi
414
415 old_LIBS="$LIBS"
416 LIBS="$LIBS $l"
417 AC_MSG_CHECKING([for iconv in $l])
418 AC_LINK_IFELSE(ICONVTEST_SRC,
e63ccb84 419 [AC_MSG_RESULT([yes])
a8304f7a
BW
420 NO_ICONV=
421 break],
422 [AC_MSG_RESULT([no])])
423 LIBS="$old_LIBS"
424done
425
426#in case of break
427LIBS="$old_LIBS"
310386f0
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428
429GIT_UNSTASH_FLAGS($ICONVDIR)
430
424adc50 431AC_SUBST(NEEDS_LIBICONV)
baf1219a 432AC_SUBST(NO_ICONV)
310386f0 433
f6719572 434#
609a2289 435# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
310386f0
BW
436
437GIT_STASH_FLAGS($ZLIB_PATH)
438
609a2289
DS
439AC_DEFUN([ZLIBTEST_SRC], [
440#include <zlib.h>
441
442int main(void)
443{
444 deflateBound(0, 0);
445 return 0;
446}
447])
448AC_MSG_CHECKING([for deflateBound in -lz])
449old_LIBS="$LIBS"
450LIBS="$LIBS -lz"
451AC_LINK_IFELSE(ZLIBTEST_SRC,
452 [AC_MSG_RESULT([yes])],
453 [AC_MSG_RESULT([no])
454 NO_DEFLATE_BOUND=yes])
455LIBS="$old_LIBS"
310386f0
BW
456
457GIT_UNSTASH_FLAGS($ZLIB_PATH)
458
609a2289 459AC_SUBST(NO_DEFLATE_BOUND)
310386f0 460
609a2289 461#
633b4239
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462# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
463# Patrick Mauritz).
d5c31a1c 464AC_CHECK_LIB([c], [socket],
424adc50
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465[NEEDS_SOCKET=],
466[NEEDS_SOCKET=YesPlease])
467AC_SUBST(NEEDS_SOCKET)
d1b9944d 468test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
633b4239
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469
470
471## Checks for header files.
0f7a9c9b
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472AC_MSG_NOTICE([CHECKS for header files])
473#
3cf32374
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474# Define NO_SYS_SELECT_H if you don't have sys/select.h.
475AC_CHECK_HEADER([sys/select.h],
476[NO_SYS_SELECT_H=],
477[NO_SYS_SELECT_H=UnfortunatelyYes])
478AC_SUBST(NO_SYS_SELECT_H)
479#
0f7a9c9b
JN
480# Define OLD_ICONV if your library has an old iconv(), where the second
481# (input buffer pointer) parameter is declared with type (const char **).
482AC_DEFUN([OLDICONVTEST_SRC], [[
483#include <iconv.h>
484
485extern size_t iconv(iconv_t cd,
486 char **inbuf, size_t *inbytesleft,
487 char **outbuf, size_t *outbytesleft);
488
489int main(void)
490{
491 return 0;
492}
493]])
a8304f7a
BW
494
495GIT_STASH_FLAGS($ICONVDIR)
496
0f7a9c9b
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497AC_MSG_CHECKING([for old iconv()])
498AC_COMPILE_IFELSE(OLDICONVTEST_SRC,
499 [AC_MSG_RESULT([no])],
500 [AC_MSG_RESULT([yes])
501 OLD_ICONV=UnfortunatelyYes])
633b4239 502
a8304f7a
BW
503GIT_UNSTASH_FLAGS($ICONVDIR)
504
505AC_SUBST(OLD_ICONV)
633b4239
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506
507## Checks for typedefs, structures, and compiler characteristics.
eb0f255d 508AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
f6719572 509#
633b4239 510# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
d5c31a1c 511AC_CHECK_MEMBER(struct dirent.d_ino,
424adc50
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512[NO_D_INO_IN_DIRENT=],
513[NO_D_INO_IN_DIRENT=YesPlease],
eb0f255d 514[#include <dirent.h>])
424adc50 515AC_SUBST(NO_D_INO_IN_DIRENT)
f6719572 516#
633b4239
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517# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
518# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
d5c31a1c 519AC_CHECK_MEMBER(struct dirent.d_type,
424adc50
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520[NO_D_TYPE_IN_DIRENT=],
521[NO_D_TYPE_IN_DIRENT=YesPlease],
eb0f255d 522[#include <dirent.h>])
424adc50 523AC_SUBST(NO_D_TYPE_IN_DIRENT)
f6719572 524#
633b4239
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525# Define NO_SOCKADDR_STORAGE if your platform does not have struct
526# sockaddr_storage.
d5c31a1c 527AC_CHECK_TYPE(struct sockaddr_storage,
424adc50 528[NO_SOCKADDR_STORAGE=],
ab5573ae
DS
529[NO_SOCKADDR_STORAGE=YesPlease],[
530#include <sys/types.h>
531#include <sys/socket.h>
532])
424adc50
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533AC_SUBST(NO_SOCKADDR_STORAGE)
534#
8c6ab35e
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535# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
536AC_CHECK_TYPE([struct addrinfo],[
1689c5de 537 GIT_CHECK_FUNC([getaddrinfo],
424adc50
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538 [NO_IPV6=],
539 [NO_IPV6=YesPlease])
540],[NO_IPV6=YesPlease],[
8c6ab35e
JH
541#include <sys/types.h>
542#include <sys/socket.h>
543#include <netdb.h>
544])
424adc50 545AC_SUBST(NO_IPV6)
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546#
547# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
548# do not support the 'size specifiers' introduced by C99, namely ll, hh,
549# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
550# some C compilers supported these specifiers prior to C99 as an extension.
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551AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
552 [ac_cv_c_c99_format],
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553[# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
554AC_RUN_IFELSE(
555 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
556 [[char buf[64];
557 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
3c307bfb 558 return 1;
656517b9 559 else if (strcmp(buf, "12345"))
3c307bfb 560 return 2;]])],
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561 [ac_cv_c_c99_format=yes],
562 [ac_cv_c_c99_format=no])
563])
564if test $ac_cv_c_c99_format = no; then
424adc50 565 NO_C99_FORMAT=YesPlease
d5c31a1c 566else
424adc50 567 NO_C99_FORMAT=
656517b9 568fi
424adc50 569AC_SUBST(NO_C99_FORMAT)
c4582f93 570#
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571# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
572# when attempting to read from an fopen'ed directory.
573AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
574 [ac_cv_fread_reads_directories],
575[
576AC_RUN_IFELSE(
577 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
578 [[char c;
579 FILE *f = fopen(".", "r");
580 return f && fread(&c, 1, 1, f)]])],
581 [ac_cv_fread_reads_directories=no],
582 [ac_cv_fread_reads_directories=yes])
583])
584if test $ac_cv_fread_reads_directories = yes; then
585 FREAD_READS_DIRECTORIES=UnfortunatelyYes
586else
587 FREAD_READS_DIRECTORIES=
588fi
589AC_SUBST(FREAD_READS_DIRECTORIES)
590#
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591# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
592# or vsnprintf() return -1 instead of number of characters which would
593# have been written to the final string if enough space had been available.
594AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
595 [ac_cv_snprintf_returns_bogus],
596[
597AC_RUN_IFELSE(
598 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
599 #include "stdarg.h"
600
601 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
602 {
603 int ret;
604 va_list ap;
605 va_start(ap, format);
606 ret = vsnprintf(str, maxsize, format, ap);
607 va_end(ap);
608 return ret;
609 }],
610 [[char buf[6];
611 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
612 || strcmp(buf, "12")) return 1;
613 if (snprintf(buf, 3, "%s", "12345") != 5
614 || strcmp(buf, "12")) return 1]])],
615 [ac_cv_snprintf_returns_bogus=no],
616 [ac_cv_snprintf_returns_bogus=yes])
617])
618if test $ac_cv_snprintf_returns_bogus = yes; then
619 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
620else
621 SNPRINTF_RETURNS_BOGUS=
622fi
623AC_SUBST(SNPRINTF_RETURNS_BOGUS)
633b4239 624
a20b4d89 625
633b4239 626## Checks for library functions.
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627## (in default C library and libraries checked by AC_CHECK_LIB)
628AC_MSG_NOTICE([CHECKS for library functions])
f6719572 629#
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630# Define NO_LIBGEN_H if you don't have libgen.h.
631AC_CHECK_HEADER([libgen.h],
632[NO_LIBGEN_H=],
633[NO_LIBGEN_H=YesPlease])
634AC_SUBST(NO_LIBGEN_H)
635#
633b4239 636# Define NO_STRCASESTR if you don't have strcasestr.
1689c5de 637GIT_CHECK_FUNC(strcasestr,
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638[NO_STRCASESTR=],
639[NO_STRCASESTR=YesPlease])
640AC_SUBST(NO_STRCASESTR)
f6719572 641#
24397556 642# Define NO_MEMMEM if you don't have memmem.
1689c5de 643GIT_CHECK_FUNC(memmem,
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644[NO_MEMMEM=],
645[NO_MEMMEM=YesPlease])
646AC_SUBST(NO_MEMMEM)
647#
633b4239 648# Define NO_STRLCPY if you don't have strlcpy.
1689c5de 649GIT_CHECK_FUNC(strlcpy,
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650[NO_STRLCPY=],
651[NO_STRLCPY=YesPlease])
652AC_SUBST(NO_STRLCPY)
f6719572 653#
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654# Define NO_UINTMAX_T if your platform does not have uintmax_t
655AC_CHECK_TYPE(uintmax_t,
656[NO_UINTMAX_T=],
657[NO_UINTMAX_T=YesPlease],[
658#include <inttypes.h>
659])
660AC_SUBST(NO_UINTMAX_T)
661#
24397556 662# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1689c5de 663GIT_CHECK_FUNC(strtoumax,
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664[NO_STRTOUMAX=],
665[NO_STRTOUMAX=YesPlease])
666AC_SUBST(NO_STRTOUMAX)
667#
633b4239 668# Define NO_SETENV if you don't have setenv in the C library.
1689c5de 669GIT_CHECK_FUNC(setenv,
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670[NO_SETENV=],
671[NO_SETENV=YesPlease])
672AC_SUBST(NO_SETENV)
f6719572 673#
bfa8fccf 674# Define NO_UNSETENV if you don't have unsetenv in the C library.
1689c5de 675GIT_CHECK_FUNC(unsetenv,
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676[NO_UNSETENV=],
677[NO_UNSETENV=YesPlease])
678AC_SUBST(NO_UNSETENV)
679#
24397556 680# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1689c5de 681GIT_CHECK_FUNC(mkdtemp,
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682[NO_MKDTEMP=],
683[NO_MKDTEMP=YesPlease])
684AC_SUBST(NO_MKDTEMP)
685#
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686# Define NO_MKSTEMPS if you don't have mkstemps in the C library.
687GIT_CHECK_FUNC(mkstemps,
688[NO_MKSTEMPS=],
689[NO_MKSTEMPS=YesPlease])
690AC_SUBST(NO_MKSTEMPS)
691#
692#
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693# Define NO_MMAP if you want to avoid mmap.
694#
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695# Define NO_ICONV if your libc does not properly support iconv.
696
697
698## Other checks.
699# Define USE_PIC if you need the main git objects to be built with -fPIC
700# in order to build and link perl/Git.so. x86-64 seems to need this.
701#
702# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
703# Enable it on Windows. By default, symrefs are still used.
20f7a398 704#
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705# Define NO_PTHREADS if we do not have pthreads
706#
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707# Define PTHREAD_LIBS to the linker flag used for Pthread support and define
708# THREADED_DELTA_SEARCH if Pthreads are available.
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709AC_DEFUN([PTHREADTEST_SRC], [
710#include <pthread.h>
711
712int main(void)
713{
714 pthread_mutex_t test_mutex;
715 return (0);
716}
717])
718
719dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
720dnl [[#include <pthread.h>]],
721dnl [[pthread_mutex_t test_mutex;]]
722dnl )])
723
724NO_PTHREADS=UnfortunatelyYes
725THREADED_DELTA_SEARCH=
726PTHREAD_LIBS=
727
728if test -n "$USER_NOPTHREAD"; then
729 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
730# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
731# -D_REENTRANT' or some such.
732elif test -z "$PTHREAD_CFLAGS"; then
733 for opt in -pthread -lpthread; do
734 old_CFLAGS="$CFLAGS"
735 CFLAGS="$opt $CFLAGS"
736 AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
737 AC_LINK_IFELSE(PTHREADTEST_SRC,
738 [AC_MSG_RESULT([yes])
739 NO_PTHREADS=
740 PTHREAD_LIBS="$opt"
741 THREADED_DELTA_SEARCH=YesPlease
742 break
743 ],
744 [AC_MSG_RESULT([no])])
745 CFLAGS="$old_CFLAGS"
746 done
20f7a398 747else
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748 old_CFLAGS="$CFLAGS"
749 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
750 AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
751 AC_LINK_IFELSE(PTHREADTEST_SRC,
752 [AC_MSG_RESULT([yes])
753 NO_PTHREADS=
754 PTHREAD_LIBS="$PTHREAD_CFLAGS"
755 THREADED_DELTA_SEARCH=YesPlease
756 ],
757 [AC_MSG_RESULT([no])])
758
759 CFLAGS="$old_CFLAGS"
20f7a398 760fi
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761
762CFLAGS="$old_CFLAGS"
763
20f7a398 764AC_SUBST(PTHREAD_LIBS)
46059cc6 765AC_SUBST(NO_PTHREADS)
d937c374 766AC_SUBST(THREADED_DELTA_SEARCH)
633b4239 767
633b4239 768## Output files
d3a6db98 769AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
55667714 770AC_OUTPUT
d3a6db98 771
f6719572 772
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773## Cleanup
774rm -f "${config_append}"