| ## 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: |
| # * Protobuf.podspec |
| # * csharp/Google.Protobuf.Tools.nuspec |
| # * csharp/src/*/AssemblyInfo.cs |
| # * csharp/src/Google.Protobuf/Google.Protobuf.nuspec |
| # * java/*/pom.xml |
| # * python/google/protobuf/__init__.py |
| # * protoc-artifacts/pom.xml |
| # * 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],[3.21.0-rc-2],[protobuf@googlegroups.com],[protobuf]) |
| |
| AM_MAINTAINER_MODE([enable]) |
| |
| AC_CONFIG_SRCDIR(src/google/protobuf/message.cc) |
| # The config file is generated but not used by the source code, since we only |
| # need very few of them, e.g. HAVE_PTHREAD and HAVE_ZLIB. Those macros are |
| # passed down in CXXFLAGS manually in src/Makefile.am |
| AC_CONFIG_HEADERS([config.h]) |
| AC_CONFIG_MACRO_DIR([m4]) |
| |
| AC_ARG_VAR(DIST_LANG, [language to include in the distribution package (i.e., make dist)]) |
| case "$DIST_LANG" in |
| "") DIST_LANG=all ;; |
| all | cpp | csharp | java | python | javanano | objectivec | ruby | php) ;; |
| *) AC_MSG_FAILURE([unknown language: $DIST_LANG]) ;; |
| esac |
| AC_SUBST(DIST_LANG) |
| |
| # autoconf's default CXXFLAGS are usually "-g -O2". These aren't necessarily |
| # the best choice for libprotobuf. |
| AS_IF([test "x${ac_cv_env_CFLAGS_set}" = "x"], |
| [CFLAGS=""]) |
| AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"], |
| [CXXFLAGS=""]) |
| |
| AC_CANONICAL_TARGET |
| |
| AM_INIT_AUTOMAKE([1.9 tar-ustar subdir-objects]) |
| |
| # Silent rules enabled: the output is minimal but informative. |
| # In particular, the warnings from the compiler stick out very clearly. |
| # To see all logs, use the --disable-silent-rules on configure or via make V=1 |
| AM_SILENT_RULES([yes]) |
| |
| AC_ARG_WITH([zlib], |
| [AS_HELP_STRING([--with-zlib], |
| [include classes for streaming compressed data in and out @<:@default=check@:>@])], |
| [],[with_zlib=check]) |
| |
| AC_ARG_WITH([zlib-include], |
| [AS_HELP_STRING([--with-zlib-include=PATH], |
| [zlib include directory])], |
| [CPPFLAGS="-I$withval $CPPFLAGS"]) |
| |
| AC_ARG_WITH([zlib-lib], |
| [AS_HELP_STRING([--with-zlib-lib=PATH], |
| [zlib lib directory])], |
| [LDFLAGS="-L$withval $LDFLAGS"]) |
| |
| AC_ARG_WITH([protoc], |
| [AS_HELP_STRING([--with-protoc=COMMAND], |
| [use the given protoc command instead of building a new one when building tests (useful for cross-compiling)])], |
| [],[with_protoc=no]) |
| |
| # Checks for programs. |
| AC_PROG_CC |
| AC_PROG_CXX |
| AC_PROG_CXX_FOR_BUILD |
| AC_LANG([C++]) |
| ACX_USE_SYSTEM_EXTENSIONS |
| m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) |
| AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc |
| AS_CASE([$target_os], [darwin*], [AC_PROG_OBJC], [AM_CONDITIONAL([am__fastdepOBJC], [false])]) |
| |
| # test_util.cc takes forever to compile with GCC and optimization turned on. |
| AC_MSG_CHECKING([C++ compiler flags...]) |
| AS_IF([test "x${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 -std=c++11 -DNDEBUG" |
| |
| AC_MSG_RESULT([use default: $PROTOBUF_OPT_FLAG $CXXFLAGS]) |
| ],[ |
| AC_MSG_RESULT([use user-supplied: $CXXFLAGS]) |
| ]) |
| |
| AC_SUBST(PROTOBUF_OPT_FLAG) |
| |
| ACX_CHECK_SUNCC |
| |
| # Have to do libtool after SUNCC, other wise it "helpfully" adds Crun Cstd |
| # to the link |
| AC_PROG_LIBTOOL |
| |
| # Check whether the linker supports version scripts |
| AC_MSG_CHECKING([whether the linker supports version scripts]) |
| save_LDFLAGS=$LDFLAGS |
| LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map" |
| cat > conftest.map <<EOF |
| { |
| global: |
| main; |
| local: |
| *; |
| }; |
| EOF |
| AC_LINK_IFELSE( |
| [AC_LANG_SOURCE([int main() { return 0; }])], |
| [have_ld_version_script=yes; AC_MSG_RESULT(yes)], |
| [have_ld_version_script=no; AC_MSG_RESULT(no)]) |
| LDFLAGS=$save_LDFLAGS |
| AM_CONDITIONAL([HAVE_LD_VERSION_SCRIPT], [test "$have_ld_version_script" = "yes"]) |
| |
| # Checks for header files. |
| AC_HEADER_STDC |
| AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h stdlib.h unistd.h]) |
| |
| # Checks for library functions. |
| AC_FUNC_MEMCMP |
| AC_FUNC_STRTOD |
| AC_CHECK_FUNCS([ftruncate memset mkdir strchr strerror strtol]) |
| |
| # Check for zlib. |
| HAVE_ZLIB=0 |
| AS_IF([test "$with_zlib" != no], [ |
| AC_MSG_CHECKING([zlib version]) |
| |
| # First check the zlib header version. |
| AC_COMPILE_IFELSE( |
| [AC_LANG_PROGRAM([[ |
| #include <zlib.h> |
| #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 $HAVE_ZLIB = 1]) |
| |
| # Add -std=c++11 if necesssary. It is important for us to do this before the |
| # libatomic check below, since that also depends on C++11. |
| AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory]) |
| |
| dnl On some platforms, std::atomic needs a helper library |
| AC_MSG_CHECKING(whether -latomic is needed) |
| AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
| #include <atomic> |
| #include <cstdint> |
| std::atomic<std::int64_t> v; |
| int main() { |
| return v; |
| } |
| ]])], STD_ATOMIC_NEED_LIBATOMIC=no, STD_ATOMIC_NEED_LIBATOMIC=yes) |
| AC_MSG_RESULT($STD_ATOMIC_NEED_LIBATOMIC) |
| if test "x$STD_ATOMIC_NEED_LIBATOMIC" = xyes; then |
| LIBATOMIC_LIBS="-latomic" |
| fi |
| AC_SUBST([LIBATOMIC_LIBS]) |
| |
| AS_IF([test "$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"]) |
| |
| AX_PTHREAD |
| AM_CONDITIONAL([HAVE_PTHREAD], [test "x$ax_pthread_ok" = "xyes"]) |
| # We still keep this for improving pbconfig.h for unsupported platforms. |
| AC_CXX_STL_HASH |
| |
| # Enable ObjC support for conformance directory on OS X. |
| OBJC_CONFORMANCE_TEST=0 |
| case "$target_os" in |
| darwin*) |
| OBJC_CONFORMANCE_TEST=1 |
| ;; |
| esac |
| AM_CONDITIONAL([OBJC_CONFORMANCE_TEST], [test $OBJC_CONFORMANCE_TEST = 1]) |
| |
| AC_MSG_CHECKING(whether -llog is needed) |
| ANDROID_TEST=no |
| case "$target_os" in |
| *android*) |
| ANDROID_TEST=yes |
| ;; |
| esac |
| AC_MSG_RESULT($ANDROID_TEST) |
| if test "x$ANDROID_TEST" = xyes; then |
| LIBLOG_LIBS="-llog" |
| fi |
| AC_SUBST([LIBLOG_LIBS]) |
| |
| # HACK: Make gmock's configure script pick up our copy of CFLAGS and CXXFLAGS, |
| # since the flags added by ACX_CHECK_SUNCC must be used when compiling gmock |
| # too. |
| export CFLAGS |
| export CXXFLAGS |
| AC_CONFIG_SUBDIRS([third_party/googletest]) |
| |
| AC_CONFIG_FILES([Makefile src/Makefile benchmarks/Makefile conformance/Makefile protobuf.pc protobuf-lite.pc]) |
| AC_OUTPUT |