remove ARM and Mozilla SHA1 implementations
[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)=; \
e068f4f5
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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#
08df6a30
BW
159# Define PPC_SHA1 environment variable when running make to make use of
160# a bundled SHA1 routine optimized for PowerPC.
161#
08df6a30 162# Define NO_OPENSSL environment variable if you do not have OpenSSL.
30ae47b4 163# This also implies BLK_SHA1.
08df6a30
BW
164#
165# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
166# /foo/bar/include and /foo/bar/lib directories.
167AC_ARG_WITH(openssl,
168AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
169AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
170GIT_PARSE_WITH(openssl))
171#
172# Define NO_CURL if you do not have curl installed. git-http-pull and
173# git-http-push are not built, and you cannot use http:// and https://
174# transports.
175#
176# Define CURLDIR=/foo/bar if your curl header and library files are in
177# /foo/bar/include and /foo/bar/lib directories.
178AC_ARG_WITH(curl,
179AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
180AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
181GIT_PARSE_WITH(curl))
182#
183# Define NO_EXPAT if you do not have expat installed. git-http-push is
184# not built, and you cannot push using http:// and https:// transports.
185#
186# Define EXPATDIR=/foo/bar if your expat header and library files are in
187# /foo/bar/include and /foo/bar/lib directories.
188AC_ARG_WITH(expat,
189AS_HELP_STRING([--with-expat],
190[support git-push using http:// and https:// transports via WebDAV (default is YES)])
191AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
192GIT_PARSE_WITH(expat))
193#
194# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
195# installed in /sw, but don't want GIT to link against any libraries
196# installed there. If defined you may specify your own (or Fink's)
197# include directories and library directories by defining CFLAGS
198# and LDFLAGS appropriately.
199#
200# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
201# have DarwinPorts installed in /opt/local, but don't want GIT to
202# link against any libraries installed there. If defined you may
203# specify your own (or DarwinPort's) include directories and
204# library directories by defining CFLAGS and LDFLAGS appropriately.
205#
206# Define NO_MMAP if you want to avoid mmap.
207#
208# Define NO_ICONV if your libc does not properly support iconv.
209AC_ARG_WITH(iconv,
210AS_HELP_STRING([--without-iconv],
211[if your architecture doesn't properly support iconv])
212AS_HELP_STRING([--with-iconv=PATH],
213[PATH is prefix for libiconv library and headers])
214AS_HELP_STRING([],
215[used only if you need linking with libiconv]),
216GIT_PARSE_WITH(iconv))
217
218## --enable-FEATURE[=ARG] and --disable-FEATURE
219#
220# Define USE_NSEC below if you want git to care about sub-second file mtimes
221# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
222# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
223# randomly break unless your underlying filesystem supports those sub-second
224# times (my ext3 doesn't).
225#
226# Define USE_STDEV below if you want git to care about the underlying device
227# change being considered an inode change from the update-index perspective.
228
10861bea 229#
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230# Define SHELL_PATH to provide path to shell.
231GIT_ARG_SET_PATH(shell)
232#
233# Define PERL_PATH to provide path to Perl.
234GIT_ARG_SET_PATH(perl)
235#
bef19da9
RS
236# Define ZLIB_PATH to provide path to zlib.
237GIT_ARG_SET_PATH(zlib)
238#
81b63c70
ER
239# Declare the with-tcltk/without-tcltk options.
240AC_ARG_WITH(tcltk,
241AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
242AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
243AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
244AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
245GIT_PARSE_WITH(tcltk))
246#
c4b1b140
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247
248
633b4239 249## Checks for programs.
fd22c027 250AC_MSG_NOTICE([CHECKS for programs])
f6719572 251#
60a144f2 252AC_PROG_CC([cc gcc])
798a9450 253# which switch to pass runtime path to dynamic libraries to the linker
a1a587ef 254AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
798a9450
GF
255 SAVE_LDFLAGS="${LDFLAGS}"
256 LDFLAGS="${SAVE_LDFLAGS} -R /"
a1a587ef 257 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
798a9450
GF
258 LDFLAGS="${SAVE_LDFLAGS}"
259])
a1a587ef 260if test "$git_cv_ld_dashr" = "yes"; then
798a9450
GF
261 AC_SUBST(CC_LD_DYNPATH, [-R])
262else
a1a587ef 263 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
798a9450
GF
264 SAVE_LDFLAGS="${LDFLAGS}"
265 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
a1a587ef 266 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
50a4b352 267 LDFLAGS="${SAVE_LDFLAGS}"
798a9450 268 ])
a1a587ef 269 if test "$git_cv_ld_wl_rpath" = "yes"; then
798a9450
GF
270 AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
271 else
a1a587ef 272 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
798a9450
GF
273 SAVE_LDFLAGS="${LDFLAGS}"
274 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
a1a587ef 275 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
50a4b352 276 LDFLAGS="${SAVE_LDFLAGS}"
798a9450 277 ])
a1a587ef 278 if test "$git_cv_ld_rpath" = "yes"; then
798a9450
GF
279 AC_SUBST(CC_LD_DYNPATH, [-rpath])
280 else
281 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
282 fi
283 fi
284fi
fd22c027 285#AC_PROG_INSTALL # needs install-sh or install.sh in sources
96e24abc 286AC_CHECK_TOOLS(AR, [gar ar], :)
fd22c027 287AC_CHECK_PROGS(TAR, [gtar tar])
81b63c70
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288# TCLTK_PATH will be set to some value if we want Tcl/Tk
289# or will be empty otherwise.
290if test -z "$NO_TCLTK"; then
291 if test "$with_tcltk" = ""; then
292 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
293 TCLTK_PATH=wish
294 AC_SUBST(TCLTK_PATH)
295 elif test "$with_tcltk" = "yes"; then
296 # Tcl/Tk check requested.
297 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
68daee08 298 else
81b63c70
ER
299 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
300 TCLTK_PATH="$with_tcltk"
301 AC_SUBST(TCLTK_PATH)
81b63c70
ER
302 fi
303fi
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304AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
305if test -n "$ASCIIDOC"; then
306 AC_MSG_CHECKING([for asciidoc version])
29adc8ba 307 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
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308 case "${asciidoc_version}" in
309 asciidoc' '8*)
310 ASCIIDOC8=YesPlease
311 AC_MSG_RESULT([${asciidoc_version} > 7])
312 ;;
313 asciidoc' '7*)
314 ASCIIDOC8=
315 AC_MSG_RESULT([${asciidoc_version}])
316 ;;
317 *)
318 ASCIIDOC8=
319 AC_MSG_RESULT([${asciidoc_version} (unknown)])
320 ;;
321 esac
322fi
323AC_SUBST(ASCIIDOC8)
324
633b4239
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325
326## Checks for libraries.
ebdf5321 327AC_MSG_NOTICE([CHECKS for libraries])
f6719572 328#
633b4239 329# Define NO_OPENSSL environment variable if you do not have OpenSSL.
ebdf5321 330# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
310386f0
BW
331
332GIT_STASH_FLAGS($OPENSSLDIR)
333
d5c31a1c 334AC_CHECK_LIB([crypto], [SHA1_Init],
424adc50 335[NEEDS_SSL_WITH_CRYPTO=],
3068f6c4 336[AC_CHECK_LIB([ssl], [SHA1_Init],
0ad8ff2c
BC
337 [NEEDS_SSL_WITH_CRYPTO=YesPlease],
338 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
310386f0
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339
340GIT_UNSTASH_FLAGS($OPENSSLDIR)
341
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342AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
343AC_SUBST(NO_OPENSSL)
310386f0 344
f6719572 345#
8da1e212 346# Define NO_CURL if you do not have libcurl installed. git-http-pull and
633b4239
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347# git-http-push are not built, and you cannot use http:// and https://
348# transports.
310386f0
BW
349
350GIT_STASH_FLAGS($CURLDIR)
351
d5c31a1c 352AC_CHECK_LIB([curl], [curl_global_init],
424adc50
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353[NO_CURL=],
354[NO_CURL=YesPlease])
310386f0
BW
355
356GIT_UNSTASH_FLAGS($CURLDIR)
357
424adc50 358AC_SUBST(NO_CURL)
310386f0 359
f6719572 360#
633b4239
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361# Define NO_EXPAT if you do not have expat installed. git-http-push is
362# not built, and you cannot push using http:// and https:// transports.
310386f0
BW
363
364GIT_STASH_FLAGS($EXPATDIR)
365
d5c31a1c 366AC_CHECK_LIB([expat], [XML_ParserCreate],
424adc50
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367[NO_EXPAT=],
368[NO_EXPAT=YesPlease])
310386f0
BW
369
370GIT_UNSTASH_FLAGS($EXPATDIR)
371
424adc50 372AC_SUBST(NO_EXPAT)
310386f0 373
f6719572 374#
e63ccb84
FK
375# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
376# some Solaris installations).
6ff88de7 377# Define NO_ICONV if neither libc nor libiconv support iconv.
310386f0 378
934f82a7
MN
379if test -z "$NO_ICONV"; then
380
310386f0
BW
381GIT_STASH_FLAGS($ICONVDIR)
382
e63ccb84
FK
383AC_DEFUN([ICONVTEST_SRC], [
384#include <iconv.h>
385
386int main(void)
387{
388 iconv_open("", "");
389 return 0;
390}
391])
a8304f7a
BW
392
393if test -n "$ICONVDIR"; then
394 lib_order="-liconv -lc"
395else
396 lib_order="-lc -liconv"
397fi
398
399NO_ICONV=YesPlease
400
401for l in $lib_order; do
402 if test "$l" = "-liconv"; then
403 NEEDS_LIBICONV=YesPlease
404 else
405 NEEDS_LIBICONV=
406 fi
407
408 old_LIBS="$LIBS"
409 LIBS="$LIBS $l"
410 AC_MSG_CHECKING([for iconv in $l])
411 AC_LINK_IFELSE(ICONVTEST_SRC,
e63ccb84 412 [AC_MSG_RESULT([yes])
a8304f7a
BW
413 NO_ICONV=
414 break],
415 [AC_MSG_RESULT([no])])
416 LIBS="$old_LIBS"
417done
418
419#in case of break
420LIBS="$old_LIBS"
310386f0
BW
421
422GIT_UNSTASH_FLAGS($ICONVDIR)
423
424adc50 424AC_SUBST(NEEDS_LIBICONV)
baf1219a 425AC_SUBST(NO_ICONV)
310386f0 426
934f82a7
MN
427if test -n "$NO_ICONV"; then
428 NEEDS_LIBICONV=
429fi
430
431fi
432
f6719572 433#
609a2289 434# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
310386f0
BW
435
436GIT_STASH_FLAGS($ZLIB_PATH)
437
609a2289
DS
438AC_DEFUN([ZLIBTEST_SRC], [
439#include <zlib.h>
440
441int main(void)
442{
443 deflateBound(0, 0);
444 return 0;
445}
446])
447AC_MSG_CHECKING([for deflateBound in -lz])
448old_LIBS="$LIBS"
449LIBS="$LIBS -lz"
450AC_LINK_IFELSE(ZLIBTEST_SRC,
451 [AC_MSG_RESULT([yes])],
452 [AC_MSG_RESULT([no])
453 NO_DEFLATE_BOUND=yes])
454LIBS="$old_LIBS"
310386f0
BW
455
456GIT_UNSTASH_FLAGS($ZLIB_PATH)
457
609a2289 458AC_SUBST(NO_DEFLATE_BOUND)
310386f0 459
609a2289 460#
633b4239
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461# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
462# Patrick Mauritz).
d5c31a1c 463AC_CHECK_LIB([c], [socket],
424adc50
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464[NEEDS_SOCKET=],
465[NEEDS_SOCKET=YesPlease])
466AC_SUBST(NEEDS_SOCKET)
d1b9944d 467test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
633b4239 468
8fccb009
RW
469#
470# Define NEEDS_RESOLV if linking with -lnsl and/or -lsocket is not enough.
471# Notably on Solaris hstrerror resides in libresolv and on Solaris 7
472# inet_ntop and inet_pton additionally reside there.
a1142892 473AC_CHECK_LIB([c], [hstrerror],
8fccb009
RW
474[NEEDS_RESOLV=],
475[NEEDS_RESOLV=YesPlease])
476AC_SUBST(NEEDS_RESOLV)
477test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
633b4239 478
a1142892 479AC_CHECK_LIB([c], [basename],
ecc395c1
BC
480[NEEDS_LIBGEN=],
481[NEEDS_LIBGEN=YesPlease])
482AC_SUBST(NEEDS_LIBGEN)
483test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
484
633b4239 485## Checks for header files.
0f7a9c9b
JN
486AC_MSG_NOTICE([CHECKS for header files])
487#
3cf32374
JN
488# Define NO_SYS_SELECT_H if you don't have sys/select.h.
489AC_CHECK_HEADER([sys/select.h],
490[NO_SYS_SELECT_H=],
491[NO_SYS_SELECT_H=UnfortunatelyYes])
492AC_SUBST(NO_SYS_SELECT_H)
493#
0f7a9c9b
JN
494# Define OLD_ICONV if your library has an old iconv(), where the second
495# (input buffer pointer) parameter is declared with type (const char **).
496AC_DEFUN([OLDICONVTEST_SRC], [[
497#include <iconv.h>
498
499extern size_t iconv(iconv_t cd,
500 char **inbuf, size_t *inbytesleft,
501 char **outbuf, size_t *outbytesleft);
502
503int main(void)
504{
505 return 0;
506}
507]])
a8304f7a
BW
508
509GIT_STASH_FLAGS($ICONVDIR)
510
0f7a9c9b
JN
511AC_MSG_CHECKING([for old iconv()])
512AC_COMPILE_IFELSE(OLDICONVTEST_SRC,
513 [AC_MSG_RESULT([no])],
514 [AC_MSG_RESULT([yes])
515 OLD_ICONV=UnfortunatelyYes])
633b4239 516
a8304f7a
BW
517GIT_UNSTASH_FLAGS($ICONVDIR)
518
519AC_SUBST(OLD_ICONV)
633b4239
JN
520
521## Checks for typedefs, structures, and compiler characteristics.
eb0f255d 522AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
f6719572 523#
633b4239 524# Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
d5c31a1c 525AC_CHECK_MEMBER(struct dirent.d_ino,
424adc50
JN
526[NO_D_INO_IN_DIRENT=],
527[NO_D_INO_IN_DIRENT=YesPlease],
eb0f255d 528[#include <dirent.h>])
424adc50 529AC_SUBST(NO_D_INO_IN_DIRENT)
f6719572 530#
633b4239
JN
531# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
532# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
d5c31a1c 533AC_CHECK_MEMBER(struct dirent.d_type,
424adc50
JN
534[NO_D_TYPE_IN_DIRENT=],
535[NO_D_TYPE_IN_DIRENT=YesPlease],
eb0f255d 536[#include <dirent.h>])
424adc50 537AC_SUBST(NO_D_TYPE_IN_DIRENT)
f6719572 538#
633b4239
JN
539# Define NO_SOCKADDR_STORAGE if your platform does not have struct
540# sockaddr_storage.
d5c31a1c 541AC_CHECK_TYPE(struct sockaddr_storage,
424adc50 542[NO_SOCKADDR_STORAGE=],
ab5573ae
DS
543[NO_SOCKADDR_STORAGE=YesPlease],[
544#include <sys/types.h>
545#include <sys/socket.h>
546])
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547AC_SUBST(NO_SOCKADDR_STORAGE)
548#
8c6ab35e
JH
549# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
550AC_CHECK_TYPE([struct addrinfo],[
1689c5de 551 GIT_CHECK_FUNC([getaddrinfo],
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552 [NO_IPV6=],
553 [NO_IPV6=YesPlease])
554],[NO_IPV6=YesPlease],[
8c6ab35e
JH
555#include <sys/types.h>
556#include <sys/socket.h>
557#include <netdb.h>
558])
424adc50 559AC_SUBST(NO_IPV6)
656517b9
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560#
561# Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
562# do not support the 'size specifiers' introduced by C99, namely ll, hh,
563# j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
564# some C compilers supported these specifiers prior to C99 as an extension.
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565AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
566 [ac_cv_c_c99_format],
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567[# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
568AC_RUN_IFELSE(
569 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
570 [[char buf[64];
571 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 572 return 1;
656517b9 573 else if (strcmp(buf, "12345"))
3c307bfb 574 return 2;]])],
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575 [ac_cv_c_c99_format=yes],
576 [ac_cv_c_c99_format=no])
577])
578if test $ac_cv_c_c99_format = no; then
424adc50 579 NO_C99_FORMAT=YesPlease
d5c31a1c 580else
424adc50 581 NO_C99_FORMAT=
656517b9 582fi
424adc50 583AC_SUBST(NO_C99_FORMAT)
c4582f93 584#
8ce1f243
MR
585# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
586# when attempting to read from an fopen'ed directory.
587AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
588 [ac_cv_fread_reads_directories],
589[
590AC_RUN_IFELSE(
591 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
592 [[char c;
593 FILE *f = fopen(".", "r");
594 return f && fread(&c, 1, 1, f)]])],
595 [ac_cv_fread_reads_directories=no],
596 [ac_cv_fread_reads_directories=yes])
597])
598if test $ac_cv_fread_reads_directories = yes; then
599 FREAD_READS_DIRECTORIES=UnfortunatelyYes
600else
601 FREAD_READS_DIRECTORIES=
602fi
603AC_SUBST(FREAD_READS_DIRECTORIES)
604#
c4582f93
MR
605# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
606# or vsnprintf() return -1 instead of number of characters which would
607# have been written to the final string if enough space had been available.
608AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
609 [ac_cv_snprintf_returns_bogus],
610[
611AC_RUN_IFELSE(
612 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
613 #include "stdarg.h"
614
615 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
616 {
617 int ret;
618 va_list ap;
619 va_start(ap, format);
620 ret = vsnprintf(str, maxsize, format, ap);
621 va_end(ap);
622 return ret;
623 }],
624 [[char buf[6];
625 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
626 || strcmp(buf, "12")) return 1;
627 if (snprintf(buf, 3, "%s", "12345") != 5
628 || strcmp(buf, "12")) return 1]])],
629 [ac_cv_snprintf_returns_bogus=no],
630 [ac_cv_snprintf_returns_bogus=yes])
631])
632if test $ac_cv_snprintf_returns_bogus = yes; then
633 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
634else
635 SNPRINTF_RETURNS_BOGUS=
636fi
637AC_SUBST(SNPRINTF_RETURNS_BOGUS)
633b4239 638
a20b4d89 639
633b4239 640## Checks for library functions.
1bbbadbc
JN
641## (in default C library and libraries checked by AC_CHECK_LIB)
642AC_MSG_NOTICE([CHECKS for library functions])
f6719572 643#
e1c06886
DA
644# Define NO_LIBGEN_H if you don't have libgen.h.
645AC_CHECK_HEADER([libgen.h],
646[NO_LIBGEN_H=],
647[NO_LIBGEN_H=YesPlease])
648AC_SUBST(NO_LIBGEN_H)
649#
633b4239 650# Define NO_STRCASESTR if you don't have strcasestr.
1689c5de 651GIT_CHECK_FUNC(strcasestr,
424adc50
JN
652[NO_STRCASESTR=],
653[NO_STRCASESTR=YesPlease])
654AC_SUBST(NO_STRCASESTR)
f6719572 655#
24397556 656# Define NO_MEMMEM if you don't have memmem.
1689c5de 657GIT_CHECK_FUNC(memmem,
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JN
658[NO_MEMMEM=],
659[NO_MEMMEM=YesPlease])
660AC_SUBST(NO_MEMMEM)
661#
633b4239 662# Define NO_STRLCPY if you don't have strlcpy.
1689c5de 663GIT_CHECK_FUNC(strlcpy,
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664[NO_STRLCPY=],
665[NO_STRLCPY=YesPlease])
666AC_SUBST(NO_STRLCPY)
f6719572 667#
0bc3e781
DS
668# Define NO_UINTMAX_T if your platform does not have uintmax_t
669AC_CHECK_TYPE(uintmax_t,
670[NO_UINTMAX_T=],
671[NO_UINTMAX_T=YesPlease],[
672#include <inttypes.h>
673])
674AC_SUBST(NO_UINTMAX_T)
675#
24397556 676# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1689c5de 677GIT_CHECK_FUNC(strtoumax,
24397556
JN
678[NO_STRTOUMAX=],
679[NO_STRTOUMAX=YesPlease])
680AC_SUBST(NO_STRTOUMAX)
681#
633b4239 682# Define NO_SETENV if you don't have setenv in the C library.
1689c5de 683GIT_CHECK_FUNC(setenv,
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JN
684[NO_SETENV=],
685[NO_SETENV=YesPlease])
686AC_SUBST(NO_SETENV)
f6719572 687#
bfa8fccf 688# Define NO_UNSETENV if you don't have unsetenv in the C library.
1689c5de 689GIT_CHECK_FUNC(unsetenv,
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690[NO_UNSETENV=],
691[NO_UNSETENV=YesPlease])
692AC_SUBST(NO_UNSETENV)
693#
24397556 694# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1689c5de 695GIT_CHECK_FUNC(mkdtemp,
24397556
JN
696[NO_MKDTEMP=],
697[NO_MKDTEMP=YesPlease])
698AC_SUBST(NO_MKDTEMP)
699#
0620b39b
DA
700# Define NO_MKSTEMPS if you don't have mkstemps in the C library.
701GIT_CHECK_FUNC(mkstemps,
702[NO_MKSTEMPS=],
703[NO_MKSTEMPS=YesPlease])
704AC_SUBST(NO_MKSTEMPS)
705#
706#
633b4239
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707# Define NO_MMAP if you want to avoid mmap.
708#
633b4239
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709# Define NO_ICONV if your libc does not properly support iconv.
710
711
712## Other checks.
713# Define USE_PIC if you need the main git objects to be built with -fPIC
714# in order to build and link perl/Git.so. x86-64 seems to need this.
715#
716# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
717# Enable it on Windows. By default, symrefs are still used.
20f7a398 718#
46059cc6
JH
719# Define NO_PTHREADS if we do not have pthreads
720#
d937c374
DS
721# Define PTHREAD_LIBS to the linker flag used for Pthread support and define
722# THREADED_DELTA_SEARCH if Pthreads are available.
1973b0d7
BW
723AC_DEFUN([PTHREADTEST_SRC], [
724#include <pthread.h>
725
726int main(void)
727{
728 pthread_mutex_t test_mutex;
729 return (0);
730}
731])
732
733dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
734dnl [[#include <pthread.h>]],
735dnl [[pthread_mutex_t test_mutex;]]
736dnl )])
737
738NO_PTHREADS=UnfortunatelyYes
739THREADED_DELTA_SEARCH=
740PTHREAD_LIBS=
741
742if test -n "$USER_NOPTHREAD"; then
743 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
744# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
745# -D_REENTRANT' or some such.
746elif test -z "$PTHREAD_CFLAGS"; then
747 for opt in -pthread -lpthread; do
748 old_CFLAGS="$CFLAGS"
749 CFLAGS="$opt $CFLAGS"
750 AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
751 AC_LINK_IFELSE(PTHREADTEST_SRC,
752 [AC_MSG_RESULT([yes])
753 NO_PTHREADS=
754 PTHREAD_LIBS="$opt"
755 THREADED_DELTA_SEARCH=YesPlease
756 break
757 ],
758 [AC_MSG_RESULT([no])])
759 CFLAGS="$old_CFLAGS"
760 done
20f7a398 761else
1973b0d7
BW
762 old_CFLAGS="$CFLAGS"
763 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
764 AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
765 AC_LINK_IFELSE(PTHREADTEST_SRC,
766 [AC_MSG_RESULT([yes])
767 NO_PTHREADS=
768 PTHREAD_LIBS="$PTHREAD_CFLAGS"
769 THREADED_DELTA_SEARCH=YesPlease
770 ],
771 [AC_MSG_RESULT([no])])
772
773 CFLAGS="$old_CFLAGS"
20f7a398 774fi
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BW
775
776CFLAGS="$old_CFLAGS"
777
20f7a398 778AC_SUBST(PTHREAD_LIBS)
46059cc6 779AC_SUBST(NO_PTHREADS)
d937c374 780AC_SUBST(THREADED_DELTA_SEARCH)
633b4239 781
633b4239 782## Output files
d3a6db98 783AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
55667714 784AC_OUTPUT
d3a6db98 785
f6719572 786
d3a6db98
JN
787## Cleanup
788rm -f "${config_append}"