## Process this file with autoconf to produce configure. ## In general, the safest way to proceed is to run ./autogen.sh AC_PREREQ(2.59) # Note: If you change the version, you must also update it in: # * java/pom.xml # * python/setup.py # * src/google/protobuf/stubs/common.h # * src/Makefile.am (Update -version-info for LDFLAGS if needed) # # In the SVN trunk, the version should always be the next anticipated release # version with the "-pre" suffix. (We used to use "-SNAPSHOT" but this pushed # the size of one file name in the dist tarfile over the 99-char limit.) AC_INIT([Protocol Buffers],[2.5.0-pre],[protobuf@googlegroups.com],[protobuf]) AM_MAINTAINER_MODE([enable]) AC_CONFIG_SRCDIR(src/google/protobuf/message.cc) AC_CONFIG_HEADERS([config.h]) AC_CONFIG_MACRO_DIR([m4]) # autoconf's default CXXFLAGS are usually "-g -O2". These aren't necessarily # the best choice for libprotobuf. AS_IF([test "x${ac_cv_env_CFLAGS_set}" = "x"], [CFLAGS=""]) AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"], [CXXFLAGS=""]) AC_CANONICAL_TARGET AM_INIT_AUTOMAKE AC_ARG_WITH([zlib], [AS_HELP_STRING([--with-zlib], [include classes for streaming compressed data in and out @<:@default=check@:>@])], [],[with_zlib=check]) AC_ARG_WITH([protoc], [AS_HELP_STRING([--with-protoc=COMMAND], [use the given protoc command instead of building a new one when building tests (useful for cross-compiling)])], [],[with_protoc=no]) # Checks for programs. AC_PROG_CC AC_PROG_CXX AC_LANG([C++]) ACX_USE_SYSTEM_EXTENSIONS AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc # test_util.cc takes forever to compile with GCC and optimization turned on. AC_MSG_CHECKING([C++ compiler flags...]) AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"],[ AS_IF([test "$GCC" = "yes"],[ PROTOBUF_OPT_FLAG="-O2" CXXFLAGS="${CXXFLAGS} -g" ]) # Protocol Buffers contains several checks that are intended to be used only # for debugging and which might hurt performance. Most users are probably # end users who don't want these checks, so add -DNDEBUG by default. CXXFLAGS="$CXXFLAGS -DNDEBUG" AC_MSG_RESULT([use default: $PROTOBUF_OPT_FLAG $CXXFLAGS]) ],[ AC_MSG_RESULT([use user-supplied: $CXXFLAGS]) ]) AC_SUBST(PROTOBUF_OPT_FLAG) ACX_CHECK_SUNCC # Have to do libtool after SUNCC, other wise it "helpfully" adds Crun Cstd # to the link AC_PROG_LIBTOOL # Checks for header files. AC_HEADER_STDC AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h stdlib.h unistd.h]) # Checks for library functions. AC_FUNC_MEMCMP AC_FUNC_STRTOD AC_CHECK_FUNCS([ftruncate memset mkdir strchr strerror strtol]) # Check for zlib. HAVE_ZLIB=0 AS_IF([test "$with_zlib" != no], [ AC_MSG_CHECKING([zlib version]) # First check the zlib header version. AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[ #include #if !defined(ZLIB_VERNUM) || (ZLIB_VERNUM < 0x1204) # error zlib version too old #endif ]], [])], [ AC_MSG_RESULT([ok (1.2.0.4 or later)]) # Also need to add -lz to the linker flags and make sure this succeeds. AC_SEARCH_LIBS([zlibVersion], [z], [ AC_DEFINE([HAVE_ZLIB], [1], [Enable classes using zlib compression.]) HAVE_ZLIB=1 ], [ AS_IF([test "$with_zlib" != check], [ AC_MSG_FAILURE([--with-zlib was given, but no working zlib library was found]) ]) ]) ], [ AS_IF([test "$with_zlib" = check], [ AC_MSG_RESULT([headers missing or too old (requires 1.2.0.4)]) ], [ AC_MSG_FAILURE([--with-zlib was given, but zlib headers were not present or were too old (requires 1.2.0.4)]) ]) ]) ]) AM_CONDITIONAL([HAVE_ZLIB], [test $HAVE_ZLIB = 1]) AS_IF([test "$with_protoc" != "no"], [ PROTOC=$with_protoc AS_IF([test "$with_protoc" = "yes"], [ # No argument given. Use system protoc. PROTOC=protoc ]) AS_IF([echo "$PROTOC" | grep -q '^@<:@^/@:>@.*/'], [ # Does not start with a slash, but contains a slash. So, it's a relative # path (as opposed to an absolute path or an executable in $PATH). # Since it will actually be executed from the src directory, prefix with # the current directory. We also insert $ac_top_build_prefix in case this # is a nested package and --with-protoc was actually given on the outer # package's configure script. PROTOC=`pwd`/${ac_top_build_prefix}$PROTOC ]) AC_SUBST([PROTOC]) ]) AM_CONDITIONAL([USE_EXTERNAL_PROTOC], [test "$with_protoc" != "no"]) ACX_PTHREAD AC_CXX_STL_HASH # HACK: Make gtest's configure script pick up our copy of CFLAGS and CXXFLAGS, # since the flags added by ACX_CHECK_SUNCC must be used when compiling gtest # too. export CFLAGS export CXXFLAGS AC_CONFIG_SUBDIRS([gtest]) AC_CONFIG_FILES([Makefile src/Makefile protobuf.pc protobuf-lite.pc]) AC_OUTPUT