1 ## Process this file with autoconf to produce configure.
2 ## In general, the safest way to proceed is to run ./autogen.sh
6 # Note: If you change the version, you must also update it in:
9 # * src/google/protobuf/stubs/common.h
10 # * src/Makefile.am (Update -version-info for LDFLAGS if needed)
12 # In the SVN trunk, the version should always be the next anticipated release
13 # version with the "-pre" suffix. (We used to use "-SNAPSHOT" but this pushed
14 # the size of one file name in the dist tarfile over the 99-char limit.)
15 AC_INIT([Protocol Buffers],[3.0.0-alpha-4-pre],[protobuf@googlegroups.com],[protobuf])
17 AM_MAINTAINER_MODE([enable])
19 AC_CONFIG_SRCDIR(src/google/protobuf/message.cc)
20 # The config file is generated but not used by the source code, since we only
21 # need very few of them, e.g. HAVE_PTHREAD and HAVE_ZLIB. Those macros are
22 # passed down in CXXFLAGS manually in src/Makefile.am
23 AC_CONFIG_HEADERS([config.h])
24 AC_CONFIG_MACRO_DIR([m4])
26 AC_ARG_VAR(DIST_LANG, [language to include in the distribution package (i.e., make dist)])
29 all | cpp | csharp | java | python | javanano | objectivec | ruby) ;;
30 *) AC_MSG_FAILURE([unknown language: $DIST_LANG]) ;;
34 # autoconf's default CXXFLAGS are usually "-g -O2". These aren't necessarily
35 # the best choice for libprotobuf.
36 AS_IF([test "x${ac_cv_env_CFLAGS_set}" = "x"],
38 AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"],
43 AM_INIT_AUTOMAKE([1.9 tar-ustar subdir-objects])
46 [AS_HELP_STRING([--with-zlib],
47 [include classes for streaming compressed data in and out @<:@default=check@:>@])],
51 [AS_HELP_STRING([--with-protoc=COMMAND],
52 [use the given protoc command instead of building a new one when building tests (useful for cross-compiling)])],
55 # Checks for programs.
59 ACX_USE_SYSTEM_EXTENSIONS
60 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
61 AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc
63 # test_util.cc takes forever to compile with GCC and optimization turned on.
64 AC_MSG_CHECKING([C++ compiler flags...])
65 AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"],[
66 AS_IF([test "$GCC" = "yes"],[
67 PROTOBUF_OPT_FLAG="-O2"
68 CXXFLAGS="${CXXFLAGS} -g"
71 # Protocol Buffers contains several checks that are intended to be used only
72 # for debugging and which might hurt performance. Most users are probably
73 # end users who don't want these checks, so add -DNDEBUG by default.
74 CXXFLAGS="$CXXFLAGS -DNDEBUG"
76 AC_MSG_RESULT([use default: $PROTOBUF_OPT_FLAG $CXXFLAGS])
78 AC_MSG_RESULT([use user-supplied: $CXXFLAGS])
81 AC_SUBST(PROTOBUF_OPT_FLAG)
85 # Have to do libtool after SUNCC, other wise it "helpfully" adds Crun Cstd
89 # Checks for header files.
91 AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h stdlib.h unistd.h])
93 # Checks for library functions.
96 AC_CHECK_FUNCS([ftruncate memset mkdir strchr strerror strtol])
100 AS_IF([test "$with_zlib" != no], [
101 AC_MSG_CHECKING([zlib version])
103 # First check the zlib header version.
107 #if !defined(ZLIB_VERNUM) || (ZLIB_VERNUM < 0x1204)
108 # error zlib version too old
111 AC_MSG_RESULT([ok (1.2.0.4 or later)])
113 # Also need to add -lz to the linker flags and make sure this succeeds.
114 AC_SEARCH_LIBS([zlibVersion], [z], [
115 AC_DEFINE([HAVE_ZLIB], [1], [Enable classes using zlib compression.])
118 AS_IF([test "$with_zlib" != check], [
119 AC_MSG_FAILURE([--with-zlib was given, but no working zlib library was found])
123 AS_IF([test "$with_zlib" = check], [
124 AC_MSG_RESULT([headers missing or too old (requires 1.2.0.4)])
126 AC_MSG_FAILURE([--with-zlib was given, but zlib headers were not present or were too old (requires 1.2.0.4)])
130 AM_CONDITIONAL([HAVE_ZLIB], [test $HAVE_ZLIB = 1])
132 AS_IF([test "$with_protoc" != "no"], [
134 AS_IF([test "$with_protoc" = "yes"], [
135 # No argument given. Use system protoc.
138 AS_IF([echo "$PROTOC" | grep -q '^@<:@^/@:>@.*/'], [
139 # Does not start with a slash, but contains a slash. So, it's a relative
140 # path (as opposed to an absolute path or an executable in $PATH).
141 # Since it will actually be executed from the src directory, prefix with
142 # the current directory. We also insert $ac_top_build_prefix in case this
143 # is a nested package and --with-protoc was actually given on the outer
144 # package's configure script.
145 PROTOC=`pwd`/${ac_top_build_prefix}$PROTOC
149 AM_CONDITIONAL([USE_EXTERNAL_PROTOC], [test "$with_protoc" != "no"])
152 AM_CONDITIONAL([HAVE_PTHREAD], [test "x$acx_pthread_ok" = "xyes"])
154 # We still keep this for improving pbconfig.h for unsupported platforms.
158 mingw* | cygwin* | win*)
161 # Need to link against rt on Solaris
162 AC_SEARCH_LIBS([sched_yield], [rt], [], [AC_MSG_FAILURE([sched_yield was not found on your system])])
166 # HACK: Make gmock's configure script pick up our copy of CFLAGS and CXXFLAGS,
167 # since the flags added by ACX_CHECK_SUNCC must be used when compiling gmock
171 AC_CONFIG_SUBDIRS([gmock])
173 AC_CONFIG_FILES([Makefile src/Makefile conformance/Makefile protobuf.pc protobuf-lite.pc])