1 # -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
4 AC_PREREQ(2.59)
5 AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
7 AC_CONFIG_SRCDIR([git.c])
9 config_file=config.mak.autogen
10 config_append=config.mak.append
11 config_in=config.mak.in
13 echo "# ${config_append}. Generated by configure." > "${config_append}"
16 ## Definitions of macros
17 # GIT_CONF_APPEND_LINE(LINE)
18 # --------------------------
19 # Append LINE to file ${config_append}
20 AC_DEFUN([GIT_CONF_APPEND_LINE],
21 [echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
22 #
23 # GIT_ARG_SET_PATH(PROGRAM)
24 # -------------------------
25 # Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
26 # Optional second argument allows setting NO_PROGRAM=YesPlease if
27 # --without-PROGRAM version used.
28 AC_DEFUN([GIT_ARG_SET_PATH],
29 [AC_ARG_WITH([$1],
30 [AS_HELP_STRING([--with-$1=PATH],
31 [provide PATH to $1])],
32 [GIT_CONF_APPEND_PATH($1,$2)],[])
33 ])# GIT_ARG_SET_PATH
34 #
35 # GIT_CONF_APPEND_PATH(PROGRAM)
36 # ------------------------------
37 # Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
38 # Used by GIT_ARG_SET_PATH(PROGRAM)
39 # Optional second argument allows setting NO_PROGRAM=YesPlease if
40 # --without-PROGRAM is used.
41 AC_DEFUN([GIT_CONF_APPEND_PATH],
42 [PROGRAM=m4_toupper($1); \
43 if test "$withval" = "no"; then \
44 if test -n "$2"; then \
45 m4_toupper($1)_PATH=$withval; \
46 AC_MSG_NOTICE([Disabling use of ${PROGRAM}]); \
47 GIT_CONF_APPEND_LINE(NO_${PROGRAM}=YesPlease); \
48 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=); \
49 else \
50 AC_MSG_ERROR([You cannot use git without $1]); \
51 fi; \
52 else \
53 if test "$withval" = "yes"; then \
54 AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
55 else \
56 m4_toupper($1)_PATH=$withval; \
57 AC_MSG_NOTICE([Setting m4_toupper($1)_PATH to $withval]); \
58 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
59 fi; \
60 fi; \
61 ]) # GIT_CONF_APPEND_PATH
62 #
63 # GIT_PARSE_WITH(PACKAGE)
64 # -----------------------
65 # For use in AC_ARG_WITH action-if-found, for packages default ON.
66 # * Set NO_PACKAGE=YesPlease for --without-PACKAGE
67 # * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
68 # * Unset NO_PACKAGE for --with-PACKAGE without ARG
69 AC_DEFUN([GIT_PARSE_WITH],
70 [PACKAGE=m4_toupper($1); \
71 if test "$withval" = "no"; then \
72 m4_toupper(NO_$1)=YesPlease; \
73 elif test "$withval" = "yes"; then \
74 m4_toupper(NO_$1)=; \
75 else \
76 m4_toupper(NO_$1)=; \
77 m4_toupper($1)DIR=$withval; \
78 AC_MSG_NOTICE([Setting m4_toupper($1)DIR to $withval]); \
79 GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
80 fi \
81 ])# GIT_PARSE_WITH
82 #
83 # GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
84 # ---------------------
85 # Set VAR to the value specied by --with-WITHNAME.
86 # No verification of arguments is performed, but warnings are issued
87 # if either 'yes' or 'no' is specified.
88 # HELP_TEXT is presented when --help is called.
89 # This is a direct way to allow setting variables in the Makefile.
90 AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
91 [AC_ARG_WITH([$1],
92 [AS_HELP_STRING([--with-$1=VALUE], $3)],
93 if test -n "$withval"; then \
94 if test "$withval" = "yes" -o "$withval" = "no"; then \
95 AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
96 [a value for $1 ($2). Maybe you do...?]); \
97 fi; \
98 \
99 AC_MSG_NOTICE([Setting $2 to $withval]); \
100 GIT_CONF_APPEND_LINE($2=$withval); \
101 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
103 dnl
104 dnl GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
105 dnl -----------------------------------------
106 dnl Similar to AC_CHECK_FUNC, but on systems that do not generate
107 dnl warnings for missing prototypes (e.g. FreeBSD when compiling without
108 dnl -Wall), it does not work. By looking for function definition in
109 dnl libraries, this problem can be worked around.
110 AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
111 AC_SEARCH_LIBS([$1],,
112 [$2],[$3])
113 ],[$3])])
115 dnl
116 dnl GIT_STASH_FLAGS(BASEPATH_VAR)
117 dnl -----------------------------
118 dnl Allow for easy stashing of LDFLAGS and CPPFLAGS before running
119 dnl tests that may want to take user settings into account.
120 AC_DEFUN([GIT_STASH_FLAGS],[
121 if test -n "$1"; then
122 old_CPPFLAGS="$CPPFLAGS"
123 old_LDFLAGS="$LDFLAGS"
124 CPPFLAGS="-I$1/include $CPPFLAGS"
125 LDFLAGS="-L$1/$lib $LDFLAGS"
126 fi
127 ])
129 dnl
130 dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
131 dnl -----------------------------
132 dnl Restore the stashed *FLAGS values.
133 AC_DEFUN([GIT_UNSTASH_FLAGS],[
134 if test -n "$1"; then
135 CPPFLAGS="$old_CPPFLAGS"
136 LDFLAGS="$old_LDFLAGS"
137 fi
138 ])
140 ## Site configuration related to programs (before tests)
141 ## --with-PACKAGE[=ARG] and --without-PACKAGE
142 #
143 # Set lib to alternative name of lib directory (e.g. lib64)
144 AC_ARG_WITH([lib],
145 [AS_HELP_STRING([--with-lib=ARG],
146 [ARG specifies alternative name for lib directory])],
147 [if test "$withval" = "no" || test "$withval" = "yes"; then \
148 AC_MSG_WARN([You should provide name for --with-lib=ARG]); \
149 else \
150 lib=$withval; \
151 AC_MSG_NOTICE([Setting lib to '$lib']); \
152 GIT_CONF_APPEND_LINE(lib=$withval); \
153 fi; \
154 ],[])
156 if test -z "$lib"; then
157 AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
158 lib=lib
159 fi
161 AC_ARG_ENABLE([pthreads],
162 [AS_HELP_STRING([--enable-pthreads=FLAGS],
163 [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
164 [The default if FLAGS is not specified is to try first -pthread]
165 [and then -lpthread.]
166 [--without-pthreads will disable threading.])],
167 [
168 if test "x$enableval" = "xyes"; then
169 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
170 elif test "x$enableval" != "xno"; then
171 PTHREAD_CFLAGS=$enableval
172 AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
173 else
174 AC_MSG_NOTICE([POSIX Threads will be disabled.])
175 NO_PTHREADS=YesPlease
176 USER_NOPTHREAD=1
177 fi],
178 [
179 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
180 ])
182 ## Site configuration (override autodetection)
183 ## --with-PACKAGE[=ARG] and --without-PACKAGE
184 AC_MSG_NOTICE([CHECKS for site configuration])
185 #
186 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
187 # tests. These tests take up a significant amount of the total test time
188 # but are not needed unless you plan to talk to SVN repos.
189 #
190 # Define PPC_SHA1 environment variable when running make to make use of
191 # a bundled SHA1 routine optimized for PowerPC.
192 #
193 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
194 # This also implies BLK_SHA1.
195 #
196 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
197 # /foo/bar/include and /foo/bar/lib directories.
198 AC_ARG_WITH(openssl,
199 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
200 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
201 GIT_PARSE_WITH(openssl))
202 #
203 # Define NO_CURL if you do not have curl installed. git-http-pull and
204 # git-http-push are not built, and you cannot use http:// and https://
205 # transports.
206 #
207 # Define CURLDIR=/foo/bar if your curl header and library files are in
208 # /foo/bar/include and /foo/bar/lib directories.
209 AC_ARG_WITH(curl,
210 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
211 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
212 GIT_PARSE_WITH(curl))
213 #
214 # Define NO_EXPAT if you do not have expat installed. git-http-push is
215 # not built, and you cannot push using http:// and https:// transports.
216 #
217 # Define EXPATDIR=/foo/bar if your expat header and library files are in
218 # /foo/bar/include and /foo/bar/lib directories.
219 AC_ARG_WITH(expat,
220 AS_HELP_STRING([--with-expat],
221 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
222 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
223 GIT_PARSE_WITH(expat))
224 #
225 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
226 # installed in /sw, but don't want GIT to link against any libraries
227 # installed there. If defined you may specify your own (or Fink's)
228 # include directories and library directories by defining CFLAGS
229 # and LDFLAGS appropriately.
230 #
231 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
232 # have DarwinPorts installed in /opt/local, but don't want GIT to
233 # link against any libraries installed there. If defined you may
234 # specify your own (or DarwinPort's) include directories and
235 # library directories by defining CFLAGS and LDFLAGS appropriately.
236 #
237 # Define NO_MMAP if you want to avoid mmap.
238 #
239 # Define NO_ICONV if your libc does not properly support iconv.
240 AC_ARG_WITH(iconv,
241 AS_HELP_STRING([--without-iconv],
242 [if your architecture doesn't properly support iconv])
243 AS_HELP_STRING([--with-iconv=PATH],
244 [PATH is prefix for libiconv library and headers])
245 AS_HELP_STRING([],
246 [used only if you need linking with libiconv]),
247 GIT_PARSE_WITH(iconv))
249 ## --enable-FEATURE[=ARG] and --disable-FEATURE
250 #
251 # Define USE_NSEC below if you want git to care about sub-second file mtimes
252 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
253 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
254 # randomly break unless your underlying filesystem supports those sub-second
255 # times (my ext3 doesn't).
256 #
257 # Define USE_STDEV below if you want git to care about the underlying device
258 # change being considered an inode change from the update-index perspective.
260 #
261 # Allow user to set ETC_GITCONFIG variable
262 GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
263 Use VALUE instead of /etc/gitconfig as the
264 global git configuration file.
265 If VALUE is not fully qualified it will be interpretted
266 as a path relative to the computed prefix at runtime.)
268 #
269 # Allow user to set the default pager
270 GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
271 Use VALUE as the fall-back pager instead of 'less'.
272 This is used by things like 'git log' when the user
273 does not specify a pager to use through alternate
274 methods. eg: /usr/bin/pager)
275 #
276 # Allow user to set the default editor
277 GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
278 Use VALUE as the fall-back editor instead of 'vi'.
279 This is used by things like 'git commit' when the user
280 does not specify a preferred editor through other
281 methods. eg: /usr/bin/editor)
283 #
284 # Define SHELL_PATH to provide path to shell.
285 GIT_ARG_SET_PATH(shell)
286 #
287 # Define PERL_PATH to provide path to Perl.
288 GIT_ARG_SET_PATH(perl)
289 #
290 # Define PYTHON_PATH to provide path to Python.
291 GIT_ARG_SET_PATH(python, allow-without)
292 #
293 # Define ZLIB_PATH to provide path to zlib.
294 GIT_ARG_SET_PATH(zlib)
295 #
296 # Declare the with-tcltk/without-tcltk options.
297 AC_ARG_WITH(tcltk,
298 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
299 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
300 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
301 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
302 GIT_PARSE_WITH(tcltk))
303 #
306 ## Checks for programs.
307 AC_MSG_NOTICE([CHECKS for programs])
308 #
309 AC_PROG_CC([cc gcc])
310 # which switch to pass runtime path to dynamic libraries to the linker
311 AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
312 SAVE_LDFLAGS="${LDFLAGS}"
313 LDFLAGS="${SAVE_LDFLAGS} -R /"
314 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
315 LDFLAGS="${SAVE_LDFLAGS}"
316 ])
317 if test "$git_cv_ld_dashr" = "yes"; then
318 AC_SUBST(CC_LD_DYNPATH, [-R])
319 else
320 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
321 SAVE_LDFLAGS="${LDFLAGS}"
322 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
323 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
324 LDFLAGS="${SAVE_LDFLAGS}"
325 ])
326 if test "$git_cv_ld_wl_rpath" = "yes"; then
327 AC_SUBST(CC_LD_DYNPATH, [-Wl,-rpath,])
328 else
329 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
330 SAVE_LDFLAGS="${LDFLAGS}"
331 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
332 AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
333 LDFLAGS="${SAVE_LDFLAGS}"
334 ])
335 if test "$git_cv_ld_rpath" = "yes"; then
336 AC_SUBST(CC_LD_DYNPATH, [-rpath])
337 else
338 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
339 fi
340 fi
341 fi
342 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
343 AC_CHECK_TOOLS(AR, [gar ar], :)
344 AC_CHECK_PROGS(TAR, [gtar tar])
345 # TCLTK_PATH will be set to some value if we want Tcl/Tk
346 # or will be empty otherwise.
347 if test -z "$NO_TCLTK"; then
348 if test "$with_tcltk" = ""; then
349 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
350 TCLTK_PATH=wish
351 AC_SUBST(TCLTK_PATH)
352 elif test "$with_tcltk" = "yes"; then
353 # Tcl/Tk check requested.
354 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
355 else
356 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
357 TCLTK_PATH="$with_tcltk"
358 AC_SUBST(TCLTK_PATH)
359 fi
360 fi
361 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
362 if test -n "$ASCIIDOC"; then
363 AC_MSG_CHECKING([for asciidoc version])
364 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
365 case "${asciidoc_version}" in
366 asciidoc' '8*)
367 ASCIIDOC8=YesPlease
368 AC_MSG_RESULT([${asciidoc_version} > 7])
369 ;;
370 asciidoc' '7*)
371 ASCIIDOC8=
372 AC_MSG_RESULT([${asciidoc_version}])
373 ;;
374 *)
375 ASCIIDOC8=
376 AC_MSG_RESULT([${asciidoc_version} (unknown)])
377 ;;
378 esac
379 fi
380 AC_SUBST(ASCIIDOC8)
383 ## Checks for libraries.
384 AC_MSG_NOTICE([CHECKS for libraries])
385 #
386 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
387 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
389 GIT_STASH_FLAGS($OPENSSLDIR)
391 AC_CHECK_LIB([crypto], [SHA1_Init],
392 [NEEDS_SSL_WITH_CRYPTO=],
393 [AC_CHECK_LIB([ssl], [SHA1_Init],
394 [NEEDS_SSL_WITH_CRYPTO=YesPlease],
395 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
397 GIT_UNSTASH_FLAGS($OPENSSLDIR)
399 AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
400 AC_SUBST(NO_OPENSSL)
402 #
403 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
404 # git-http-push are not built, and you cannot use http:// and https://
405 # transports.
407 GIT_STASH_FLAGS($CURLDIR)
409 AC_CHECK_LIB([curl], [curl_global_init],
410 [NO_CURL=],
411 [NO_CURL=YesPlease])
413 GIT_UNSTASH_FLAGS($CURLDIR)
415 AC_SUBST(NO_CURL)
417 #
418 # Define NO_EXPAT if you do not have expat installed. git-http-push is
419 # not built, and you cannot push using http:// and https:// transports.
421 GIT_STASH_FLAGS($EXPATDIR)
423 AC_CHECK_LIB([expat], [XML_ParserCreate],
424 [NO_EXPAT=],
425 [NO_EXPAT=YesPlease])
427 GIT_UNSTASH_FLAGS($EXPATDIR)
429 AC_SUBST(NO_EXPAT)
431 #
432 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
433 # some Solaris installations).
434 # Define NO_ICONV if neither libc nor libiconv support iconv.
436 if test -z "$NO_ICONV"; then
438 GIT_STASH_FLAGS($ICONVDIR)
440 AC_DEFUN([ICONVTEST_SRC], [
441 #include <iconv.h>
443 int main(void)
444 {
445 iconv_open("", "");
446 return 0;
447 }
448 ])
450 if test -n "$ICONVDIR"; then
451 lib_order="-liconv -lc"
452 else
453 lib_order="-lc -liconv"
454 fi
456 NO_ICONV=YesPlease
458 for l in $lib_order; do
459 if test "$l" = "-liconv"; then
460 NEEDS_LIBICONV=YesPlease
461 else
462 NEEDS_LIBICONV=
463 fi
465 old_LIBS="$LIBS"
466 LIBS="$LIBS $l"
467 AC_MSG_CHECKING([for iconv in $l])
468 AC_LINK_IFELSE(ICONVTEST_SRC,
469 [AC_MSG_RESULT([yes])
470 NO_ICONV=
471 break],
472 [AC_MSG_RESULT([no])])
473 LIBS="$old_LIBS"
474 done
476 #in case of break
477 LIBS="$old_LIBS"
479 GIT_UNSTASH_FLAGS($ICONVDIR)
481 AC_SUBST(NEEDS_LIBICONV)
482 AC_SUBST(NO_ICONV)
484 if test -n "$NO_ICONV"; then
485 NEEDS_LIBICONV=
486 fi
488 fi
490 #
491 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
493 GIT_STASH_FLAGS($ZLIB_PATH)
495 AC_DEFUN([ZLIBTEST_SRC], [
496 #include <zlib.h>
498 int main(void)
499 {
500 deflateBound(0, 0);
501 return 0;
502 }
503 ])
504 AC_MSG_CHECKING([for deflateBound in -lz])
505 old_LIBS="$LIBS"
506 LIBS="$LIBS -lz"
507 AC_LINK_IFELSE(ZLIBTEST_SRC,
508 [AC_MSG_RESULT([yes])],
509 [AC_MSG_RESULT([no])
510 NO_DEFLATE_BOUND=yes])
511 LIBS="$old_LIBS"
513 GIT_UNSTASH_FLAGS($ZLIB_PATH)
515 AC_SUBST(NO_DEFLATE_BOUND)
517 #
518 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
519 # Patrick Mauritz).
520 AC_CHECK_LIB([c], [socket],
521 [NEEDS_SOCKET=],
522 [NEEDS_SOCKET=YesPlease])
523 AC_SUBST(NEEDS_SOCKET)
524 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
526 #
527 # Define NEEDS_RESOLV if linking with -lnsl and/or -lsocket is not enough.
528 # Notably on Solaris hstrerror resides in libresolv and on Solaris 7
529 # inet_ntop and inet_pton additionally reside there.
530 AC_CHECK_LIB([c], [hstrerror],
531 [NEEDS_RESOLV=],
532 [NEEDS_RESOLV=YesPlease])
533 AC_SUBST(NEEDS_RESOLV)
534 test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
536 AC_CHECK_LIB([c], [basename],
537 [NEEDS_LIBGEN=],
538 [NEEDS_LIBGEN=YesPlease])
539 AC_SUBST(NEEDS_LIBGEN)
540 test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
542 ## Checks for header files.
543 AC_MSG_NOTICE([CHECKS for header files])
544 #
545 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
546 AC_CHECK_HEADER([sys/select.h],
547 [NO_SYS_SELECT_H=],
548 [NO_SYS_SELECT_H=UnfortunatelyYes])
549 AC_SUBST(NO_SYS_SELECT_H)
550 #
551 # Define OLD_ICONV if your library has an old iconv(), where the second
552 # (input buffer pointer) parameter is declared with type (const char **).
553 AC_DEFUN([OLDICONVTEST_SRC], [[
554 #include <iconv.h>
556 extern size_t iconv(iconv_t cd,
557 char **inbuf, size_t *inbytesleft,
558 char **outbuf, size_t *outbytesleft);
560 int main(void)
561 {
562 return 0;
563 }
564 ]])
566 GIT_STASH_FLAGS($ICONVDIR)
568 AC_MSG_CHECKING([for old iconv()])
569 AC_COMPILE_IFELSE(OLDICONVTEST_SRC,
570 [AC_MSG_RESULT([no])],
571 [AC_MSG_RESULT([yes])
572 OLD_ICONV=UnfortunatelyYes])
574 GIT_UNSTASH_FLAGS($ICONVDIR)
576 AC_SUBST(OLD_ICONV)
578 ## Checks for typedefs, structures, and compiler characteristics.
579 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
580 #
581 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
582 AC_CHECK_MEMBER(struct dirent.d_ino,
583 [NO_D_INO_IN_DIRENT=],
584 [NO_D_INO_IN_DIRENT=YesPlease],
585 [#include <dirent.h>])
586 AC_SUBST(NO_D_INO_IN_DIRENT)
587 #
588 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
589 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
590 AC_CHECK_MEMBER(struct dirent.d_type,
591 [NO_D_TYPE_IN_DIRENT=],
592 [NO_D_TYPE_IN_DIRENT=YesPlease],
593 [#include <dirent.h>])
594 AC_SUBST(NO_D_TYPE_IN_DIRENT)
595 #
596 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
597 # sockaddr_storage.
598 AC_CHECK_TYPE(struct sockaddr_storage,
599 [NO_SOCKADDR_STORAGE=],
600 [NO_SOCKADDR_STORAGE=YesPlease],[
601 #include <sys/types.h>
602 #include <sys/socket.h>
603 ])
604 AC_SUBST(NO_SOCKADDR_STORAGE)
605 #
606 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
607 AC_CHECK_TYPE([struct addrinfo],[
608 GIT_CHECK_FUNC([getaddrinfo],
609 [NO_IPV6=],
610 [NO_IPV6=YesPlease])
611 ],[NO_IPV6=YesPlease],[
612 #include <sys/types.h>
613 #include <sys/socket.h>
614 #include <netdb.h>
615 ])
616 AC_SUBST(NO_IPV6)
617 #
618 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
619 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
620 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
621 # some C compilers supported these specifiers prior to C99 as an extension.
622 AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
623 [ac_cv_c_c99_format],
624 [# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
625 AC_RUN_IFELSE(
626 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
627 [[char buf[64];
628 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
629 return 1;
630 else if (strcmp(buf, "12345"))
631 return 2;]])],
632 [ac_cv_c_c99_format=yes],
633 [ac_cv_c_c99_format=no])
634 ])
635 if test $ac_cv_c_c99_format = no; then
636 NO_C99_FORMAT=YesPlease
637 else
638 NO_C99_FORMAT=
639 fi
640 AC_SUBST(NO_C99_FORMAT)
641 #
642 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
643 # when attempting to read from an fopen'ed directory.
644 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
645 [ac_cv_fread_reads_directories],
646 [
647 AC_RUN_IFELSE(
648 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
649 [[char c;
650 FILE *f = fopen(".", "r");
651 return f && fread(&c, 1, 1, f)]])],
652 [ac_cv_fread_reads_directories=no],
653 [ac_cv_fread_reads_directories=yes])
654 ])
655 if test $ac_cv_fread_reads_directories = yes; then
656 FREAD_READS_DIRECTORIES=UnfortunatelyYes
657 else
658 FREAD_READS_DIRECTORIES=
659 fi
660 AC_SUBST(FREAD_READS_DIRECTORIES)
661 #
662 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
663 # or vsnprintf() return -1 instead of number of characters which would
664 # have been written to the final string if enough space had been available.
665 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
666 [ac_cv_snprintf_returns_bogus],
667 [
668 AC_RUN_IFELSE(
669 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
670 #include "stdarg.h"
672 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
673 {
674 int ret;
675 va_list ap;
676 va_start(ap, format);
677 ret = vsnprintf(str, maxsize, format, ap);
678 va_end(ap);
679 return ret;
680 }],
681 [[char buf[6];
682 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
683 || strcmp(buf, "12")) return 1;
684 if (snprintf(buf, 3, "%s", "12345") != 5
685 || strcmp(buf, "12")) return 1]])],
686 [ac_cv_snprintf_returns_bogus=no],
687 [ac_cv_snprintf_returns_bogus=yes])
688 ])
689 if test $ac_cv_snprintf_returns_bogus = yes; then
690 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
691 else
692 SNPRINTF_RETURNS_BOGUS=
693 fi
694 AC_SUBST(SNPRINTF_RETURNS_BOGUS)
697 ## Checks for library functions.
698 ## (in default C library and libraries checked by AC_CHECK_LIB)
699 AC_MSG_NOTICE([CHECKS for library functions])
700 #
701 # Define NO_LIBGEN_H if you don't have libgen.h.
702 AC_CHECK_HEADER([libgen.h],
703 [NO_LIBGEN_H=],
704 [NO_LIBGEN_H=YesPlease])
705 AC_SUBST(NO_LIBGEN_H)
706 #
707 # Define NO_STRCASESTR if you don't have strcasestr.
708 GIT_CHECK_FUNC(strcasestr,
709 [NO_STRCASESTR=],
710 [NO_STRCASESTR=YesPlease])
711 AC_SUBST(NO_STRCASESTR)
712 #
713 # Define NO_MEMMEM if you don't have memmem.
714 GIT_CHECK_FUNC(memmem,
715 [NO_MEMMEM=],
716 [NO_MEMMEM=YesPlease])
717 AC_SUBST(NO_MEMMEM)
718 #
719 # Define NO_STRLCPY if you don't have strlcpy.
720 GIT_CHECK_FUNC(strlcpy,
721 [NO_STRLCPY=],
722 [NO_STRLCPY=YesPlease])
723 AC_SUBST(NO_STRLCPY)
724 #
725 # Define NO_UINTMAX_T if your platform does not have uintmax_t
726 AC_CHECK_TYPE(uintmax_t,
727 [NO_UINTMAX_T=],
728 [NO_UINTMAX_T=YesPlease],[
729 #include <inttypes.h>
730 ])
731 AC_SUBST(NO_UINTMAX_T)
732 #
733 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
734 GIT_CHECK_FUNC(strtoumax,
735 [NO_STRTOUMAX=],
736 [NO_STRTOUMAX=YesPlease])
737 AC_SUBST(NO_STRTOUMAX)
738 #
739 # Define NO_SETENV if you don't have setenv in the C library.
740 GIT_CHECK_FUNC(setenv,
741 [NO_SETENV=],
742 [NO_SETENV=YesPlease])
743 AC_SUBST(NO_SETENV)
744 #
745 # Define NO_UNSETENV if you don't have unsetenv in the C library.
746 GIT_CHECK_FUNC(unsetenv,
747 [NO_UNSETENV=],
748 [NO_UNSETENV=YesPlease])
749 AC_SUBST(NO_UNSETENV)
750 #
751 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
752 GIT_CHECK_FUNC(mkdtemp,
753 [NO_MKDTEMP=],
754 [NO_MKDTEMP=YesPlease])
755 AC_SUBST(NO_MKDTEMP)
756 #
757 # Define NO_MKSTEMPS if you don't have mkstemps in the C library.
758 GIT_CHECK_FUNC(mkstemps,
759 [NO_MKSTEMPS=],
760 [NO_MKSTEMPS=YesPlease])
761 AC_SUBST(NO_MKSTEMPS)
762 #
763 #
764 # Define NO_MMAP if you want to avoid mmap.
765 #
766 # Define NO_ICONV if your libc does not properly support iconv.
769 ## Other checks.
770 # Define USE_PIC if you need the main git objects to be built with -fPIC
771 # in order to build and link perl/Git.so. x86-64 seems to need this.
772 #
773 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
774 # Enable it on Windows. By default, symrefs are still used.
775 #
776 # Define NO_PTHREADS if we do not have pthreads.
777 #
778 # Define PTHREAD_LIBS to the linker flag used for Pthread support.
779 AC_DEFUN([PTHREADTEST_SRC], [
780 #include <pthread.h>
782 int main(void)
783 {
784 pthread_mutex_t test_mutex;
785 return (0);
786 }
787 ])
789 dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
790 dnl [[#include <pthread.h>]],
791 dnl [[pthread_mutex_t test_mutex;]]
792 dnl )])
794 NO_PTHREADS=UnfortunatelyYes
795 PTHREAD_LIBS=
797 if test -n "$USER_NOPTHREAD"; then
798 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
799 # handle these separately since PTHREAD_CFLAGS could be '-lpthreads
800 # -D_REENTRANT' or some such.
801 elif test -z "$PTHREAD_CFLAGS"; then
802 for opt in -pthread -lpthread; do
803 old_CFLAGS="$CFLAGS"
804 CFLAGS="$opt $CFLAGS"
805 AC_MSG_CHECKING([Checking for POSIX Threads with '$opt'])
806 AC_LINK_IFELSE(PTHREADTEST_SRC,
807 [AC_MSG_RESULT([yes])
808 NO_PTHREADS=
809 PTHREAD_LIBS="$opt"
810 break
811 ],
812 [AC_MSG_RESULT([no])])
813 CFLAGS="$old_CFLAGS"
814 done
815 else
816 old_CFLAGS="$CFLAGS"
817 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
818 AC_MSG_CHECKING([Checking for POSIX Threads with '$PTHREAD_CFLAGS'])
819 AC_LINK_IFELSE(PTHREADTEST_SRC,
820 [AC_MSG_RESULT([yes])
821 NO_PTHREADS=
822 PTHREAD_LIBS="$PTHREAD_CFLAGS"
823 ],
824 [AC_MSG_RESULT([no])])
826 CFLAGS="$old_CFLAGS"
827 fi
829 CFLAGS="$old_CFLAGS"
831 AC_SUBST(PTHREAD_LIBS)
832 AC_SUBST(NO_PTHREADS)
834 ## Output files
835 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
836 AC_OUTPUT
839 ## Cleanup
840 rm -f "${config_append}"