1## Process this file with autoconf to produce configure. 2## In general, the safest way to proceed is to run ./autogen.sh 3 4AC_PREREQ(2.59) 5 6# Note: If you change the version, you must also update it in: 7# * Protobuf.podspec 8# * csharp/Google.Protobuf.Tools.nuspec 9# * csharp/src/*/AssemblyInfo.cs 10# * csharp/src/Google.Protobuf/Google.Protobuf.nuspec 11# * java/*/pom.xml 12# * python/google/protobuf/__init__.py 13# * protoc-artifacts/pom.xml 14# * src/google/protobuf/stubs/common.h 15# * src/Makefile.am (Update -version-info for LDFLAGS if needed) 16# 17# In the SVN trunk, the version should always be the next anticipated release 18# version with the "-pre" suffix. (We used to use "-SNAPSHOT" but this pushed 19# the size of one file name in the dist tarfile over the 99-char limit.) 20AC_INIT([Protocol Buffers],[3.0.0],[protobuf@googlegroups.com],[protobuf]) 21 22AM_MAINTAINER_MODE([enable]) 23 24AC_CONFIG_SRCDIR(src/google/protobuf/message.cc) 25# The config file is generated but not used by the source code, since we only 26# need very few of them, e.g. HAVE_PTHREAD and HAVE_ZLIB. Those macros are 27# passed down in CXXFLAGS manually in src/Makefile.am 28AC_CONFIG_HEADERS([config.h]) 29AC_CONFIG_MACRO_DIR([m4]) 30 31AC_ARG_VAR(DIST_LANG, [language to include in the distribution package (i.e., make dist)]) 32case "$DIST_LANG" in 33 "") DIST_LANG=all ;; 34 all | cpp | csharp | java | python | javanano | objectivec | ruby | js) ;; 35 *) AC_MSG_FAILURE([unknown language: $DIST_LANG]) ;; 36esac 37AC_SUBST(DIST_LANG) 38 39# autoconf's default CXXFLAGS are usually "-g -O2". These aren't necessarily 40# the best choice for libprotobuf. 41AS_IF([test "x${ac_cv_env_CFLAGS_set}" = "x"], 42 [CFLAGS=""]) 43AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"], 44 [CXXFLAGS=""]) 45 46AC_CANONICAL_TARGET 47 48AM_INIT_AUTOMAKE([1.9 tar-ustar subdir-objects]) 49 50AC_ARG_WITH([zlib], 51 [AS_HELP_STRING([--with-zlib], 52 [include classes for streaming compressed data in and out @<:@default=check@:>@])], 53 [],[with_zlib=check]) 54 55AC_ARG_WITH([protoc], 56 [AS_HELP_STRING([--with-protoc=COMMAND], 57 [use the given protoc command instead of building a new one when building tests (useful for cross-compiling)])], 58 [],[with_protoc=no]) 59 60# Checks for programs. 61AC_PROG_CC 62AC_PROG_CXX 63AC_LANG([C++]) 64ACX_USE_SYSTEM_EXTENSIONS 65m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) 66AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc 67AC_PROG_OBJC 68 69# test_util.cc takes forever to compile with GCC and optimization turned on. 70AC_MSG_CHECKING([C++ compiler flags...]) 71AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"],[ 72 AS_IF([test "$GCC" = "yes"],[ 73 PROTOBUF_OPT_FLAG="-O2" 74 CXXFLAGS="${CXXFLAGS} -g" 75 ]) 76 77 # Protocol Buffers contains several checks that are intended to be used only 78 # for debugging and which might hurt performance. Most users are probably 79 # end users who don't want these checks, so add -DNDEBUG by default. 80 CXXFLAGS="$CXXFLAGS -DNDEBUG" 81 82 AC_MSG_RESULT([use default: $PROTOBUF_OPT_FLAG $CXXFLAGS]) 83],[ 84 AC_MSG_RESULT([use user-supplied: $CXXFLAGS]) 85]) 86 87AC_SUBST(PROTOBUF_OPT_FLAG) 88 89ACX_CHECK_SUNCC 90 91# Have to do libtool after SUNCC, other wise it "helpfully" adds Crun Cstd 92# to the link 93AC_PROG_LIBTOOL 94 95# Checks for header files. 96AC_HEADER_STDC 97AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h stdlib.h unistd.h]) 98 99# Checks for library functions. 100AC_FUNC_MEMCMP 101AC_FUNC_STRTOD 102AC_CHECK_FUNCS([ftruncate memset mkdir strchr strerror strtol]) 103 104# Check for zlib. 105HAVE_ZLIB=0 106AS_IF([test "$with_zlib" != no], [ 107 AC_MSG_CHECKING([zlib version]) 108 109 # First check the zlib header version. 110 AC_COMPILE_IFELSE( 111 [AC_LANG_PROGRAM([[ 112 #include <zlib.h> 113 #if !defined(ZLIB_VERNUM) || (ZLIB_VERNUM < 0x1204) 114 # error zlib version too old 115 #endif 116 ]], [])], [ 117 AC_MSG_RESULT([ok (1.2.0.4 or later)]) 118 119 # Also need to add -lz to the linker flags and make sure this succeeds. 120 AC_SEARCH_LIBS([zlibVersion], [z], [ 121 AC_DEFINE([HAVE_ZLIB], [1], [Enable classes using zlib compression.]) 122 HAVE_ZLIB=1 123 ], [ 124 AS_IF([test "$with_zlib" != check], [ 125 AC_MSG_FAILURE([--with-zlib was given, but no working zlib library was found]) 126 ]) 127 ]) 128 ], [ 129 AS_IF([test "$with_zlib" = check], [ 130 AC_MSG_RESULT([headers missing or too old (requires 1.2.0.4)]) 131 ], [ 132 AC_MSG_FAILURE([--with-zlib was given, but zlib headers were not present or were too old (requires 1.2.0.4)]) 133 ]) 134 ]) 135]) 136AM_CONDITIONAL([HAVE_ZLIB], [test $HAVE_ZLIB = 1]) 137 138AS_IF([test "$with_protoc" != "no"], [ 139 PROTOC=$with_protoc 140 AS_IF([test "$with_protoc" = "yes"], [ 141 # No argument given. Use system protoc. 142 PROTOC=protoc 143 ]) 144 AS_IF([echo "$PROTOC" | grep -q '^@<:@^/@:>@.*/'], [ 145 # Does not start with a slash, but contains a slash. So, it's a relative 146 # path (as opposed to an absolute path or an executable in $PATH). 147 # Since it will actually be executed from the src directory, prefix with 148 # the current directory. We also insert $ac_top_build_prefix in case this 149 # is a nested package and --with-protoc was actually given on the outer 150 # package's configure script. 151 PROTOC=`pwd`/${ac_top_build_prefix}$PROTOC 152 ]) 153 AC_SUBST([PROTOC]) 154]) 155AM_CONDITIONAL([USE_EXTERNAL_PROTOC], [test "$with_protoc" != "no"]) 156 157ACX_PTHREAD 158AM_CONDITIONAL([HAVE_PTHREAD], [test "x$acx_pthread_ok" = "xyes"]) 159 160# We still keep this for improving pbconfig.h for unsupported platforms. 161AC_CXX_STL_HASH 162 163case "$target_os" in 164 mingw* | cygwin* | win*) 165 ;; 166 *) 167 # Need to link against rt on Solaris 168 AC_SEARCH_LIBS([sched_yield], [rt], [], [AC_MSG_FAILURE([sched_yield was not found on your system])]) 169 ;; 170esac 171 172# Enable ObjC support for conformance directory on OS X. 173OBJC_CONFORMANCE_TEST=0 174case "$target_os" in 175 darwin*) 176 OBJC_CONFORMANCE_TEST=1 177 ;; 178esac 179AM_CONDITIONAL([OBJC_CONFORMANCE_TEST], [test $OBJC_CONFORMANCE_TEST = 1]) 180 181# HACK: Make gmock's configure script pick up our copy of CFLAGS and CXXFLAGS, 182# since the flags added by ACX_CHECK_SUNCC must be used when compiling gmock 183# too. 184export CFLAGS 185export CXXFLAGS 186AC_CONFIG_SUBDIRS([gmock]) 187 188AC_CONFIG_FILES([Makefile src/Makefile benchmarks/Makefile conformance/Makefile protobuf.pc protobuf-lite.pc]) 189AC_OUTPUT 190