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