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# * java/pom.xml 8# * python/setup.py 9# * src/google/protobuf/stubs/common.h 10# * src/Makefile.am (Update -version-info for LDFLAGS if needed) 11# 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.) 15AC_INIT([Protocol Buffers],[2.3.0],[protobuf@googlegroups.com],[protobuf]) 16 17 18AC_CONFIG_SRCDIR(src/google/protobuf/message.cc) 19AC_CONFIG_HEADERS([config.h]) 20AC_CONFIG_MACRO_DIR([m4]) 21 22# autoconf's default CXXFLAGS are usually "-g -O2". These aren't necessarily 23# the best choice for libprotobuf. 24AS_IF([test "x${ac_cv_env_CFLAGS_set}" = "x"], 25 [CFLAGS=""]) 26AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"], 27 [CXXFLAGS=""]) 28 29AC_CANONICAL_TARGET 30 31AM_INIT_AUTOMAKE 32 33AC_ARG_WITH([zlib], 34 [AS_HELP_STRING([--with-zlib], 35 [include classes for streaming compressed data in and out @<:@default=check@:>@])], 36 [],[with_zlib=check]) 37 38AC_ARG_WITH([protoc], 39 [AS_HELP_STRING([--with-protoc=COMMAND], 40 [use the given protoc command instead of building a new one when building tests (useful for cross-compiling)])], 41 [],[with_protoc=no]) 42 43# Checks for programs. 44AC_PROG_CC 45AC_PROG_CXX 46AC_LANG([C++]) 47ACX_USE_SYSTEM_EXTENSIONS 48AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc 49 50# test_util.cc takes forever to compile with GCC and optimization turned on. 51AC_MSG_CHECKING([C++ compiler flags...]) 52AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"],[ 53 AS_IF([test "$GCC" = "yes"],[ 54 PROTOBUF_OPT_FLAG="-O2" 55 CXXFLAGS="${CXXFLAGS} -g" 56 ]) 57 58 # Protocol Buffers contains several checks that are intended to be used only 59 # for debugging and which might hurt performance. Most users are probably 60 # end users who don't want these checks, so add -DNDEBUG by default. 61 CXXFLAGS="$CXXFLAGS -DNDEBUG" 62 63 AC_MSG_RESULT([use default: $PROTOBUF_OPT_FLAG $CXXFLAGS]) 64],[ 65 AC_MSG_RESULT([use user-supplied: $CXXFLAGS]) 66]) 67 68AC_SUBST(PROTOBUF_OPT_FLAG) 69 70ACX_CHECK_SUNCC 71 72# Have to do libtool after SUNCC, other wise it "helpfully" adds Crun Cstd 73# to the link 74AC_PROG_LIBTOOL 75 76# Checks for header files. 77AC_HEADER_STDC 78AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h stdlib.h unistd.h]) 79 80# Checks for library functions. 81AC_FUNC_MEMCMP 82AC_FUNC_STRTOD 83AC_CHECK_FUNCS([ftruncate memset mkdir strchr strerror strtol]) 84 85# Check for zlib. 86HAVE_ZLIB=0 87AS_IF([test "$with_zlib" != no], [ 88 AC_MSG_CHECKING([zlib version]) 89 90 # First check the zlib header version. 91 AC_COMPILE_IFELSE( 92 AC_LANG_PROGRAM([[ 93 #include <zlib.h> 94 #if !defined(ZLIB_VERNUM) || (ZLIB_VERNUM < 0x1204) 95 # error zlib version too old 96 #endif 97 ]], []), [ 98 AC_MSG_RESULT([ok (1.2.0.4 or later)]) 99 100 # Also need to add -lz to the linker flags and make sure this succeeds. 101 AC_SEARCH_LIBS([zlibVersion], [z], [ 102 AC_DEFINE([HAVE_ZLIB], [1], [Enable classes using zlib compression.]) 103 HAVE_ZLIB=1 104 ], [ 105 AS_IF([test "$with_zlib" != check], [ 106 AC_MSG_FAILURE([--with-zlib was given, but no working zlib library was found]) 107 ]) 108 ]) 109 ], [ 110 AS_IF([test "$with_zlib" = check], [ 111 AC_MSG_RESULT([headers missing or too old (requires 1.2.0.4)]) 112 ], [ 113 AC_MSG_FAILURE([--with-zlib was given, but zlib headers were not present or were too old (requires 1.2.0.4)]) 114 ]) 115 ]) 116]) 117AM_CONDITIONAL([HAVE_ZLIB], [test $HAVE_ZLIB = 1]) 118 119AS_IF([test "$with_protoc" != "no"], [ 120 PROTOC=$with_protoc 121 AS_IF([test "$with_protoc" == "yes"], [ 122 # No argument given. Use system protoc. 123 PROTOC=protoc 124 ]) 125 AS_IF([echo "$PROTOC" | grep -q '^@<:@^/@:>@.*/'], [ 126 # Does not start with a slash, but contains a slash. So, it's a relative 127 # path (as opposed to an absolute path or an executable in $PATH). 128 # Since it will actually be executed from the src directory, prefix with 129 # the current directory. We also insert $ac_top_build_prefix in case this 130 # is a nested package and --with-protoc was actually given on the outer 131 # package's configure script. 132 PROTOC=`pwd`/${ac_top_build_prefix}$PROTOC 133 ]) 134 AC_SUBST([PROTOC]) 135]) 136AM_CONDITIONAL([USE_EXTERNAL_PROTOC], [test "$with_protoc" != "no"]) 137 138ACX_PTHREAD 139AC_CXX_STL_HASH 140 141# HACK: Make gtest's configure script pick up our copy of CFLAGS and CXXFLAGS, 142# since the flags added by ACX_CHECK_SUNCC must be used when compiling gtest 143# too. 144export CFLAGS 145export CXXFLAGS 146AC_CONFIG_SUBDIRS([gtest]) 147 148AC_CONFIG_FILES([Makefile src/Makefile protobuf.pc protobuf-lite.pc]) 149AC_OUTPUT 150