Merge branch 'master' into lj/refs
[git/git.git] / configure.ac
1 # -*- Autoconf -*-
2 # Process this file with autoconf to produce a configure script.
3
4 AC_PREREQ(2.59)
5 AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
6
7 AC_CONFIG_SRCDIR([git.c])
8
9 config_file=config.mak.autogen
10 config_append=config.mak.append
11 config_in=config.mak.in
12
13 echo "# ${config_append}. Generated by configure." > "${config_append}"
14
15
16 ## Definitions of macros
17 # GIT_CONF_APPEND_LINE(LINE)
18 # --------------------------
19 # Append LINE to file ${config_append}
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=$withval); \
65 fi \
66 ])# GIT_PARSE_WITH
67
68
69 ## Site configuration related to programs (before tests)
70 ## --with-PACKAGE[=ARG] and --without-PACKAGE
71 #
72 # Define SHELL_PATH to provide path to shell.
73 GIT_ARG_SET_PATH(shell)
74 #
75 # Define PERL_PATH to provide path to Perl.
76 GIT_ARG_SET_PATH(perl)
77 #
78 # Define PYTHON_PATH to provide path to Python.
79 AC_ARG_WITH(python,[AS_HELP_STRING([--with-python=PATH], [provide PATH to python])
80 AS_HELP_STRING([--without-python], [don't use python scripts])],
81 [if test "$withval" = "no"; then \
82 NO_PYTHON=YesPlease; \
83 elif test "$withval" = "yes"; then \
84 NO_PYTHON=; \
85 else \
86 NO_PYTHON=; \
87 PYTHON_PATH=$withval; \
88 fi; \
89 ])
90 AC_SUBST(NO_PYTHON)
91 AC_SUBST(PYTHON_PATH)
92
93
94 ## Checks for programs.
95 AC_MSG_NOTICE([CHECKS for programs])
96 #
97 AC_PROG_CC
98 #AC_PROG_INSTALL # needs install-sh or install.sh in sources
99 AC_CHECK_TOOL(AR, ar, :)
100 AC_CHECK_PROGS(TAR, [gtar tar])
101 #
102 # Define PYTHON_PATH to provide path to Python.
103 if test -z "$NO_PYTHON"; then
104 if test -z "$PYTHON_PATH"; then
105 AC_PATH_PROGS(PYTHON_PATH, [python python2.4 python2.3 python2])
106 fi
107 if test -n "$PYTHON_PATH"; then
108 GIT_CONF_APPEND_LINE([PYTHON_PATH=@PYTHON_PATH@])
109 NO_PYTHON=""
110 fi
111 fi
112
113
114 ## Checks for libraries.
115 AC_MSG_NOTICE([CHECKS for libraries])
116 #
117 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
118 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
119 AC_CHECK_LIB([crypto], [SHA1_Init],
120 [NEEDS_SSL_WITH_CRYPTO=],
121 [AC_CHECK_LIB([ssl], [SHA1_Init],
122 [NEEDS_SSL_WITH_CRYPTO=YesPlease
123 NEEDS_SSL_WITH_CRYPTO=],
124 [NO_OPENSSL=YesPlease])])
125 AC_SUBST(NEEDS_SSL_WITH_CRYPTO)
126 AC_SUBST(NO_OPENSSL)
127 #
128 # Define NO_CURL if you do not have curl installed. git-http-pull and
129 # git-http-push are not built, and you cannot use http:// and https://
130 # transports.
131 AC_CHECK_LIB([curl], [curl_global_init],
132 [NO_CURL=],
133 [NO_CURL=YesPlease])
134 AC_SUBST(NO_CURL)
135 #
136 # Define NO_EXPAT if you do not have expat installed. git-http-push is
137 # not built, and you cannot push using http:// and https:// transports.
138 AC_CHECK_LIB([expat], [XML_ParserCreate],
139 [NO_EXPAT=],
140 [NO_EXPAT=YesPlease])
141 AC_SUBST(NO_EXPAT)
142 #
143 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
144 # Define NO_ICONV if neither libc nor libiconv support iconv.
145 AC_CHECK_LIB([c], [iconv],
146 [NEEDS_LIBICONV=],
147 AC_CHECK_LIB([iconv], [iconv],
148 [NEEDS_LIBICONV=YesPlease],
149 [NO_ICONV=YesPlease]))
150 AC_SUBST(NEEDS_LIBICONV)
151 AC_SUBST(NO_ICONV)
152 test -n "$NEEDS_LIBICONV" && LIBS="$LIBS -liconv"
153 #
154 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
155 # Patrick Mauritz).
156 AC_CHECK_LIB([c], [socket],
157 [NEEDS_SOCKET=],
158 [NEEDS_SOCKET=YesPlease])
159 AC_SUBST(NEEDS_SOCKET)
160 test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
161
162
163 ## Checks for header files.
164
165
166 ## Checks for typedefs, structures, and compiler characteristics.
167 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
168 #
169 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
170 AC_CHECK_MEMBER(struct dirent.d_ino,
171 [NO_D_INO_IN_DIRENT=],
172 [NO_D_INO_IN_DIRENT=YesPlease],
173 [#include <dirent.h>])
174 AC_SUBST(NO_D_INO_IN_DIRENT)
175 #
176 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
177 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
178 AC_CHECK_MEMBER(struct dirent.d_type,
179 [NO_D_TYPE_IN_DIRENT=],
180 [NO_D_TYPE_IN_DIRENT=YesPlease],
181 [#include <dirent.h>])
182 AC_SUBST(NO_D_TYPE_IN_DIRENT)
183 #
184 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
185 # sockaddr_storage.
186 AC_CHECK_TYPE(struct sockaddr_storage,
187 [NO_SOCKADDR_STORAGE=],
188 [NO_SOCKADDR_STORAGE=YesPlease],[
189 #include <sys/types.h>
190 #include <sys/socket.h>
191 ])
192 AC_SUBST(NO_SOCKADDR_STORAGE)
193 #
194 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
195 AC_CHECK_TYPE([struct addrinfo],[
196 AC_CHECK_FUNC([getaddrinfo],
197 [NO_IPV6=],
198 [NO_IPV6=YesPlease])
199 ],[NO_IPV6=YesPlease],[
200 #include <sys/types.h>
201 #include <sys/socket.h>
202 #include <netdb.h>
203 ])
204 AC_SUBST(NO_IPV6)
205 #
206 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
207 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
208 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
209 # some C compilers supported these specifiers prior to C99 as an extension.
210 AC_CACHE_CHECK([whether formatted IO functions support C99 size specifiers],
211 [ac_cv_c_c99_format],
212 [# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
213 AC_RUN_IFELSE(
214 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
215 [[char buf[64];
216 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
217 exit(1);
218 else if (strcmp(buf, "12345"))
219 exit(2);]])],
220 [ac_cv_c_c99_format=yes],
221 [ac_cv_c_c99_format=no])
222 ])
223 if test $ac_cv_c_c99_format = no; then
224 NO_C99_FORMAT=YesPlease
225 else
226 NO_C99_FORMAT=
227 fi
228 AC_SUBST(NO_C99_FORMAT)
229
230
231 ## Checks for library functions.
232 ## (in default C library and libraries checked by AC_CHECK_LIB)
233 AC_MSG_NOTICE([CHECKS for library functions])
234 #
235 # Define NO_STRCASESTR if you don't have strcasestr.
236 AC_CHECK_FUNC(strcasestr,
237 [NO_STRCASESTR=],
238 [NO_STRCASESTR=YesPlease])
239 AC_SUBST(NO_STRCASESTR)
240 #
241 # Define NO_STRLCPY if you don't have strlcpy.
242 AC_CHECK_FUNC(strlcpy,
243 [NO_STRLCPY=],
244 [NO_STRLCPY=YesPlease])
245 AC_SUBST(NO_STRLCPY)
246 #
247 # Define NO_SETENV if you don't have setenv in the C library.
248 AC_CHECK_FUNC(setenv,
249 [NO_SETENV=],
250 [NO_SETENV=YesPlease])
251 AC_SUBST(NO_SETENV)
252 #
253 # Define NO_MMAP if you want to avoid mmap.
254 #
255 # Define NO_ICONV if your libc does not properly support iconv.
256
257
258 ## Other checks.
259 # Define USE_PIC if you need the main git objects to be built with -fPIC
260 # in order to build and link perl/Git.so. x86-64 seems to need this.
261 #
262 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
263 # Enable it on Windows. By default, symrefs are still used.
264 #
265 # Define WITH_OWN_SUBPROCESS_PY if you want to use with python 2.3.
266 AC_CACHE_CHECK([for subprocess.py],
267 [ac_cv_python_has_subprocess_py],
268 [if $PYTHON_PATH -c 'import subprocess' 2>/dev/null; then
269 ac_cv_python_has_subprocess_py=yes
270 else
271 ac_cv_python_has_subprocess_py=no
272 fi])
273 if test $ac_cv_python_has_subprocess_py != yes; then
274 GIT_CONF_APPEND_LINE([WITH_OWN_SUBPROCESS_PY=YesPlease])
275 fi
276 #
277 # Define NO_ACCURATE_DIFF if your diff program at least sometimes misses
278 # a missing newline at the end of the file.
279
280
281 ## Site configuration (override autodetection)
282 ## --with-PACKAGE[=ARG] and --without-PACKAGE
283 AC_MSG_NOTICE([CHECKS for site configuration])
284 #
285 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
286 # tests. These tests take up a significant amount of the total test time
287 # but are not needed unless you plan to talk to SVN repos.
288 #
289 # Define MOZILLA_SHA1 environment variable when running make to make use of
290 # a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
291 # on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
292 # choice) has very fast version optimized for i586.
293 #
294 # Define PPC_SHA1 environment variable when running make to make use of
295 # a bundled SHA1 routine optimized for PowerPC.
296 #
297 # Define ARM_SHA1 environment variable when running make to make use of
298 # a bundled SHA1 routine optimized for ARM.
299 #
300 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
301 # This also implies MOZILLA_SHA1.
302 #
303 # Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
304 # /foo/bar/include and /foo/bar/lib directories.
305 AC_ARG_WITH(openssl,
306 AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
307 AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),\
308 GIT_PARSE_WITH(openssl))
309 #
310 # Define NO_CURL if you do not have curl installed. git-http-pull and
311 # git-http-push are not built, and you cannot use http:// and https://
312 # transports.
313 #
314 # Define CURLDIR=/foo/bar if your curl header and library files are in
315 # /foo/bar/include and /foo/bar/lib directories.
316 AC_ARG_WITH(curl,
317 AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
318 AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
319 GIT_PARSE_WITH(curl))
320 #
321 # Define NO_EXPAT if you do not have expat installed. git-http-push is
322 # not built, and you cannot push using http:// and https:// transports.
323 #
324 # Define EXPATDIR=/foo/bar if your expat header and library files are in
325 # /foo/bar/include and /foo/bar/lib directories.
326 AC_ARG_WITH(expat,
327 AS_HELP_STRING([--with-expat],
328 [support git-push using http:// and https:// transports via WebDAV (default is YES)])
329 AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
330 GIT_PARSE_WITH(expat))
331 #
332 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
333 # installed in /sw, but don't want GIT to link against any libraries
334 # installed there. If defined you may specify your own (or Fink's)
335 # include directories and library directories by defining CFLAGS
336 # and LDFLAGS appropriately.
337 #
338 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
339 # have DarwinPorts installed in /opt/local, but don't want GIT to
340 # link against any libraries installed there. If defined you may
341 # specify your own (or DarwinPort's) include directories and
342 # library directories by defining CFLAGS and LDFLAGS appropriately.
343 #
344 # Define NO_MMAP if you want to avoid mmap.
345 #
346 # Define NO_ICONV if your libc does not properly support iconv.
347 AC_ARG_WITH(iconv,
348 AS_HELP_STRING([--without-iconv],
349 [if your architecture doesn't properly support iconv])
350 AS_HELP_STRING([--with-iconv=PATH],
351 [PATH is prefix for libiconv library and headers])
352 AS_HELP_STRING([],
353 [used only if you need linking with libiconv]),
354 GIT_PARSE_WITH(iconv))
355
356 ## --enable-FEATURE[=ARG] and --disable-FEATURE
357 #
358 # Define COLLISION_CHECK below if you believe that SHA1's
359 # 1461501637330902918203684832716283019655932542976 hashes do not give you
360 # sufficient guarantee that no collisions between objects will ever happen.
361 #
362 # Define USE_NSEC below if you want git to care about sub-second file mtimes
363 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
364 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
365 # randomly break unless your underlying filesystem supports those sub-second
366 # times (my ext3 doesn't).
367 #
368 # Define USE_STDEV below if you want git to care about the underlying device
369 # change being considered an inode change from the update-cache perspective.
370
371
372 ## Output files
373 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
374 AC_OUTPUT
375
376
377 ## Cleanup
378 rm -f "${config_append}"