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 AC_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)
37 AC_DEFUN([GIT_CONF_APPEND_PATH],
38 [PROGRAM=m4_toupper($1); \
39 if test "$withval" = "no"; then \
40 AC_MSG_ERROR([You cannot use git without $1]); \
41 else \
42 if test "$withval" = "yes"; then \
43 AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
44 else \
45 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
46 fi; \
47 fi; \
48 ]) # GIT_CONF_APPEND_PATH
49 #
50 # GIT_PARSE_WITH(PACKAGE)
51 # -----------------------
52 # For use in AC_ARG_WITH action-if-found, for packages default ON.
53 # * Set NO_PACKAGE=YesPlease for --without-PACKAGE
54 # * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
55 # * Unset NO_PACKAGE for --with-PACKAGE without ARG
56 AC_DEFUN([GIT_PARSE_WITH],
57 [PACKAGE=m4_toupper($1); \
58 if test "$withval" = "no"; then \
59 m4_toupper(NO_$1)=YesPlease; \
60 elif test "$withval" = "yes"; then \
61 m4_toupper(NO_$1)=; \
62 else \
63 m4_toupper(NO_$1)=; \
64 GIT_CONF_APPEND_LINE(${PACKAGE}DIR=$withval); \
65 fi \
66 ])# GIT_PARSE_WITH
69 ## Site configuration related to programs (before tests)
70 ## --with-PACKAGE[=ARG] and --without-PACKAGE
71 #
72 # Set lib to alternative name of lib directory (e.g. lib64)
73 AC_ARG_WITH([lib],
74 [AS_HELP_STRING([--with-lib=ARG],
75 [ARG specifies alternative name for lib directory])],
76 [if test "$withval" = "no" || test "$withval" = "yes"; then \
77 AC_MSG_WARN([You should provide name for --with-lib=ARG]); \
78 else \
79 GIT_CONF_APPEND_LINE(lib=$withval); \
80 fi; \
81 ],[])
82 #
83 # Define SHELL_PATH to provide path to shell.
84 GIT_ARG_SET_PATH(shell)
85 #
86 # Define PERL_PATH to provide path to Perl.
87 GIT_ARG_SET_PATH(perl)
88 #
89 # Define ZLIB_PATH to provide path to zlib.
90 GIT_ARG_SET_PATH(zlib)
91 #
92 # Declare the with-tcltk/without-tcltk options.
93 AC_ARG_WITH(tcltk,
94 AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
95 AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
96 AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
97 AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),\
98 GIT_PARSE_WITH(tcltk))
99 #
102 ## Checks for programs.
103 AC_MSG_NOTICE([CHECKS for programs])
104 #
105 AC_PROG_CC([cc gcc])
106 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
107 AC_CHECK_TOOLS(AR, [gar ar], :)
108 AC_CHECK_PROGS(TAR, [gtar tar])
109 # TCLTK_PATH will be set to some value if we want Tcl/Tk
110 # or will be empty otherwise.
111 if test -z "$NO_TCLTK"; then
112 if test "$with_tcltk" = ""; then
113 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
114 TCLTK_PATH=wish
115 AC_SUBST(TCLTK_PATH)
116 elif test "$with_tcltk" = "yes"; then
117 # Tcl/Tk check requested.
118 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
119 else
120 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
121 TCLTK_PATH="$with_tcltk"
122 AC_SUBST(TCLTK_PATH)
123 fi
124 fi
125 AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
126 if test -n "$ASCIIDOC"; then
127 AC_MSG_CHECKING([for asciidoc version])
128 asciidoc_version=`$ASCIIDOC --version 2>&1`
129 case "${asciidoc_version}" in
130 asciidoc' '8*)
131 ASCIIDOC8=YesPlease
132 AC_MSG_RESULT([${asciidoc_version} > 7])
133 ;;
134 asciidoc' '7*)
135 ASCIIDOC8=
136 AC_MSG_RESULT([${asciidoc_version}])
137 ;;
138 *)
139 ASCIIDOC8=
140 AC_MSG_RESULT([${asciidoc_version} (unknown)])
141 ;;
142 esac
143 fi
144 AC_SUBST(ASCIIDOC8)
147 ## Checks for libraries.
148 AC_MSG_NOTICE([CHECKS for libraries])
149 #
150 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
151 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
152 AC_CHECK_LIB([crypto], [SHA1_Init],
153 [NEEDS_SSL_WITH_CRYPTO=],
154 [AC_CHECK_LIB([ssl], [SHA1_Init],
155 [NEEDS_SSL_WITH_CRYPTO=YesPlease
156 NEEDS_SSL_WITH_CRYPTO=],
157 [NO_OPENSSL=YesPlease])])
158 AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
159 AC_SUBST(NO_OPENSSL)
160 #
161 # Define NO_CURL if you do not have libcurl installed. git-http-pull and
162 # git-http-push are not built, and you cannot use http:// and https://
163 # transports.
164 AC_CHECK_LIB([curl], [curl_global_init],
165 [NO_CURL=],
166 [NO_CURL=YesPlease])
167 AC_SUBST(NO_CURL)
168 #
169 # Define NO_EXPAT if you do not have expat installed. git-http-push is
170 # not built, and you cannot push using http:// and https:// transports.
171 AC_CHECK_LIB([expat], [XML_ParserCreate],
172 [NO_EXPAT=],
173 [NO_EXPAT=YesPlease])
174 AC_SUBST(NO_EXPAT)
175 #
176 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
177 # some Solaris installations).
178 # Define NO_ICONV if neither libc nor libiconv support iconv.
179 AC_DEFUN([ICONVTEST_SRC], [
180 #include <iconv.h>
182 int main(void)
183 {
184 iconv_open("", "");
185 return 0;
186 }
187 ])
188 AC_MSG_CHECKING([for iconv in -lc])
189 AC_LINK_IFELSE(ICONVTEST_SRC,
190 [AC_MSG_RESULT([yes])
191 NEEDS_LIBICONV=],
192 [AC_MSG_RESULT([no])
193 old_LIBS="$LIBS"
194 LIBS="$LIBS -liconv"
195 AC_MSG_CHECKING([for iconv in -liconv])
196 AC_LINK_IFELSE(ICONVTEST_SRC,
197 [AC_MSG_RESULT([yes])
198 NEEDS_LIBICONV=YesPlease],
199 [AC_MSG_RESULT([no])
200 NO_ICONV=YesPlease])
201 LIBS="$old_LIBS"])
202 AC_SUBST(NEEDS_LIBICONV)
203 AC_SUBST(NO_ICONV)
204 test -n "$NEEDS_LIBICONV" && LIBS="$LIBS -liconv"
205 #
206 # Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
207 AC_DEFUN([ZLIBTEST_SRC], [
208 #include <zlib.h>
210 int main(void)
211 {
212 deflateBound(0, 0);
213 return 0;
214 }
215 ])
216 AC_MSG_CHECKING([for deflateBound in -lz])
217 old_LIBS="$LIBS"
218 LIBS="$LIBS -lz"
219 AC_LINK_IFELSE(ZLIBTEST_SRC,
220 [AC_MSG_RESULT([yes])],
221 [AC_MSG_RESULT([no])
222 NO_DEFLATE_BOUND=yes])
223 LIBS="$old_LIBS"
224 AC_SUBST(NO_DEFLATE_BOUND)
225 #
226 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
227 # Patrick Mauritz).
228 AC_CHECK_LIB([c], [socket],
229 [NEEDS_SOCKET=],
230 [NEEDS_SOCKET=YesPlease])
231 AC_SUBST(NEEDS_SOCKET)
232 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
235 ## Checks for header files.
236 AC_MSG_NOTICE([CHECKS for header files])
237 #
238 # Define NO_SYS_SELECT_H if you don't have sys/select.h.
239 AC_CHECK_HEADER([sys/select.h],
240 [NO_SYS_SELECT_H=],
241 [NO_SYS_SELECT_H=UnfortunatelyYes])
242 AC_SUBST(NO_SYS_SELECT_H)
243 #
244 # Define OLD_ICONV if your library has an old iconv(), where the second
245 # (input buffer pointer) parameter is declared with type (const char **).
246 AC_DEFUN([OLDICONVTEST_SRC], [[
247 #include <iconv.h>
249 extern size_t iconv(iconv_t cd,
250 char **inbuf, size_t *inbytesleft,
251 char **outbuf, size_t *outbytesleft);
253 int main(void)
254 {
255 return 0;
256 }
257 ]])
258 AC_MSG_CHECKING([for old iconv()])
259 AC_COMPILE_IFELSE(OLDICONVTEST_SRC,
260 [AC_MSG_RESULT([no])],
261 [AC_MSG_RESULT([yes])
262 OLD_ICONV=UnfortunatelyYes])
263 AC_SUBST(OLD_ICONV)
266 ## Checks for typedefs, structures, and compiler characteristics.
267 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
268 #
269 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
270 AC_CHECK_MEMBER(struct dirent.d_ino,
271 [NO_D_INO_IN_DIRENT=],
272 [NO_D_INO_IN_DIRENT=YesPlease],
273 [#include <dirent.h>])
274 AC_SUBST(NO_D_INO_IN_DIRENT)
275 #
276 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
277 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
278 AC_CHECK_MEMBER(struct dirent.d_type,
279 [NO_D_TYPE_IN_DIRENT=],
280 [NO_D_TYPE_IN_DIRENT=YesPlease],
281 [#include <dirent.h>])
282 AC_SUBST(NO_D_TYPE_IN_DIRENT)
283 #
284 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
285 # sockaddr_storage.
286 AC_CHECK_TYPE(struct sockaddr_storage,
287 [NO_SOCKADDR_STORAGE=],
288 [NO_SOCKADDR_STORAGE=YesPlease],[
289 #include <sys/types.h>
290 #include <sys/socket.h>
291 ])
292 AC_SUBST(NO_SOCKADDR_STORAGE)
293 #
294 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
295 AC_CHECK_TYPE([struct addrinfo],[
296 AC_CHECK_FUNC([getaddrinfo],
297 [NO_IPV6=],
298 [NO_IPV6=YesPlease])
299 ],[NO_IPV6=YesPlease],[
300 #include <sys/types.h>
301 #include <sys/socket.h>
302 #include <netdb.h>
303 ])
304 AC_SUBST(NO_IPV6)
305 #
306 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
307 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
308 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
309 # some C compilers supported these specifiers prior to C99 as an extension.
310 AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
311 [ac_cv_c_c99_format],
312 [# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
313 AC_RUN_IFELSE(
314 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
315 [[char buf[64];
316 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
317 return 1;
318 else if (strcmp(buf, "12345"))
319 return 2;]])],
320 [ac_cv_c_c99_format=yes],
321 [ac_cv_c_c99_format=no])
322 ])
323 if test $ac_cv_c_c99_format = no; then
324 NO_C99_FORMAT=YesPlease
325 else
326 NO_C99_FORMAT=
327 fi
328 AC_SUBST(NO_C99_FORMAT)
329 #
330 # Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
331 # when attempting to read from an fopen'ed directory.
332 AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
333 [ac_cv_fread_reads_directories],
334 [
335 AC_RUN_IFELSE(
336 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
337 [[char c;
338 FILE *f = fopen(".", "r");
339 return f && fread(&c, 1, 1, f)]])],
340 [ac_cv_fread_reads_directories=no],
341 [ac_cv_fread_reads_directories=yes])
342 ])
343 if test $ac_cv_fread_reads_directories = yes; then
344 FREAD_READS_DIRECTORIES=UnfortunatelyYes
345 else
346 FREAD_READS_DIRECTORIES=
347 fi
348 AC_SUBST(FREAD_READS_DIRECTORIES)
349 #
350 # Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
351 # or vsnprintf() return -1 instead of number of characters which would
352 # have been written to the final string if enough space had been available.
353 AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
354 [ac_cv_snprintf_returns_bogus],
355 [
356 AC_RUN_IFELSE(
357 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
358 #include "stdarg.h"
360 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
361 {
362 int ret;
363 va_list ap;
364 va_start(ap, format);
365 ret = vsnprintf(str, maxsize, format, ap);
366 va_end(ap);
367 return ret;
368 }],
369 [[char buf[6];
370 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
371 || strcmp(buf, "12")) return 1;
372 if (snprintf(buf, 3, "%s", "12345") != 5
373 || strcmp(buf, "12")) return 1]])],
374 [ac_cv_snprintf_returns_bogus=no],
375 [ac_cv_snprintf_returns_bogus=yes])
376 ])
377 if test $ac_cv_snprintf_returns_bogus = yes; then
378 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
379 else
380 SNPRINTF_RETURNS_BOGUS=
381 fi
382 AC_SUBST(SNPRINTF_RETURNS_BOGUS)
385 ## Checks for library functions.
386 ## (in default C library and libraries checked by AC_CHECK_LIB)
387 AC_MSG_NOTICE([CHECKS for library functions])
388 #
389 # Define NO_STRCASESTR if you don't have strcasestr.
390 AC_CHECK_FUNC(strcasestr,
391 [NO_STRCASESTR=],
392 [NO_STRCASESTR=YesPlease])
393 AC_SUBST(NO_STRCASESTR)
394 #
395 # Define NO_MEMMEM if you don't have memmem.
396 AC_CHECK_FUNC(memmem,
397 [NO_MEMMEM=],
398 [NO_MEMMEM=YesPlease])
399 AC_SUBST(NO_MEMMEM)
400 #
401 # Define NO_STRLCPY if you don't have strlcpy.
402 AC_CHECK_FUNC(strlcpy,
403 [NO_STRLCPY=],
404 [NO_STRLCPY=YesPlease])
405 AC_SUBST(NO_STRLCPY)
406 #
407 # Define NO_STRTOUMAX if you don't have strtoumax in the C library.
408 AC_CHECK_FUNC(strtoumax,
409 [NO_STRTOUMAX=],
410 [NO_STRTOUMAX=YesPlease])
411 AC_SUBST(NO_STRTOUMAX)
412 #
413 # Define NO_SETENV if you don't have setenv in the C library.
414 AC_CHECK_FUNC(setenv,
415 [NO_SETENV=],
416 [NO_SETENV=YesPlease])
417 AC_SUBST(NO_SETENV)
418 #
419 # Define NO_UNSETENV if you don't have unsetenv in the C library.
420 AC_CHECK_FUNC(unsetenv,
421 [NO_UNSETENV=],
422 [NO_UNSETENV=YesPlease])
423 AC_SUBST(NO_UNSETENV)
424 #
425 # Define NO_MKDTEMP if you don't have mkdtemp in the C library.
426 AC_CHECK_FUNC(mkdtemp,
427 [NO_MKDTEMP=],
428 [NO_MKDTEMP=YesPlease])
429 AC_SUBST(NO_MKDTEMP)
430 #
431 # Define NO_MMAP if you want to avoid mmap.
432 #
433 # Define NO_ICONV if your libc does not properly support iconv.
436 ## Other checks.
437 # Define USE_PIC if you need the main git objects to be built with -fPIC
438 # in order to build and link perl/Git.so. x86-64 seems to need this.
439 #
440 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
441 # Enable it on Windows. By default, symrefs are still used.
443 ## Site configuration (override autodetection)
444 ## --with-PACKAGE[=ARG] and --without-PACKAGE
445 AC_MSG_NOTICE([CHECKS for site configuration])
446 #
447 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
448 # tests. These tests take up a significant amount of the total test time
449 # but are not needed unless you plan to talk to SVN repos.
450 #
451 # Define MOZILLA_SHA1 environment variable when running make to make use of
452 # a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
453 # on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
454 # choice) has very fast version optimized for i586.
455 #
456 # Define PPC_SHA1 environment variable when running make to make use of
457 # a bundled SHA1 routine optimized for PowerPC.
458 #
459 # Define ARM_SHA1 environment variable when running make to make use of
460 # a bundled SHA1 routine optimized for ARM.
461 #
462 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
463 # This also implies MOZILLA_SHA1.
464 #
465 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
466 # /foo/bar/include and /foo/bar/lib directories.
467 AC_ARG_WITH(openssl,
468 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
469 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
470 GIT_PARSE_WITH(openssl))
471 #
472 # Define NO_CURL if you do not have curl installed. git-http-pull and
473 # git-http-push are not built, and you cannot use http:// and https://
474 # transports.
475 #
476 # Define CURLDIR=/foo/bar if your curl header and library files are in
477 # /foo/bar/include and /foo/bar/lib directories.
478 AC_ARG_WITH(curl,
479 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
480 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
481 GIT_PARSE_WITH(curl))
482 #
483 # Define NO_EXPAT if you do not have expat installed. git-http-push is
484 # not built, and you cannot push using http:// and https:// transports.
485 #
486 # Define EXPATDIR=/foo/bar if your expat header and library files are in
487 # /foo/bar/include and /foo/bar/lib directories.
488 AC_ARG_WITH(expat,
489 AS_HELP_STRING([--with-expat],
490 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
491 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
492 GIT_PARSE_WITH(expat))
493 #
494 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
495 # installed in /sw, but don't want GIT to link against any libraries
496 # installed there. If defined you may specify your own (or Fink's)
497 # include directories and library directories by defining CFLAGS
498 # and LDFLAGS appropriately.
499 #
500 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
501 # have DarwinPorts installed in /opt/local, but don't want GIT to
502 # link against any libraries installed there. If defined you may
503 # specify your own (or DarwinPort's) include directories and
504 # library directories by defining CFLAGS and LDFLAGS appropriately.
505 #
506 # Define NO_MMAP if you want to avoid mmap.
507 #
508 # Define NO_ICONV if your libc does not properly support iconv.
509 AC_ARG_WITH(iconv,
510 AS_HELP_STRING([--without-iconv],
511 [if your architecture doesn't properly support iconv])
512 AS_HELP_STRING([--with-iconv=PATH],
513 [PATH is prefix for libiconv library and headers])
514 AS_HELP_STRING([],
515 [used only if you need linking with libiconv]),
516 GIT_PARSE_WITH(iconv))
518 ## --enable-FEATURE[=ARG] and --disable-FEATURE
519 #
520 # Define USE_NSEC below if you want git to care about sub-second file mtimes
521 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
522 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
523 # randomly break unless your underlying filesystem supports those sub-second
524 # times (my ext3 doesn't).
525 #
526 # Define USE_STDEV below if you want git to care about the underlying device
527 # change being considered an inode change from the update-index perspective.
530 ## Output files
531 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
532 AC_OUTPUT
535 ## Cleanup
536 rm -f "${config_append}"