124 lines
4.5 KiB
Plaintext
124 lines
4.5 KiB
Plaintext
## Process this file with autoconf to produce configure.
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## In general, the safest way to proceed is to run ./autogen.sh
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AC_PREREQ(2.59)
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# Note: If you change the version, you must also update it in:
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# * java/pom.xml
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# * python/setup.py
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# * src/google/protobuf/stubs/common.h
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# * src/Makefile.am (Update -version-info for LDFLAGS if needed)
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#
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# In the SVN trunk, the version should always be the next anticipated release
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# version with the "-pre" suffix. (We used to use "-SNAPSHOT" but this pushed
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# the size of one file name in the dist tarfile over the 99-char limit.)
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AC_INIT([Protocol Buffers],[2.0.4-pre],[protobuf@googlegroups.com],[protobuf])
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# Detect whether the user specified their own compilation flags. If so then
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# we want to respect their decision, otherwise we will twiddle them later.
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AS_IF([test "$CXXFLAGS" = ""],[
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protobuf_default_cxxflags=yes
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])
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AC_CONFIG_SRCDIR(src/google/protobuf/message.cc)
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AC_CONFIG_HEADERS([config.h])
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AC_CONFIG_MACRO_DIR([m4])
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AM_INIT_AUTOMAKE
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AC_ARG_WITH([zlib],
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[AS_HELP_STRING([--with-zlib],
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[include classes for streaming compressed data in and out @<:@default=check@:>@])],
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[],[with_zlib=check])
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AC_ARG_WITH([protoc],
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[AS_HELP_STRING([--with-protoc=COMMAND],
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[use the given protoc command instead of building a new one when building tests (useful for cross-compiling)])],
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[],[with_protoc=no])
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# Checks for programs.
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AC_PROG_CC
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AC_PROG_CXX
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AC_LANG([C++])
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ACX_USE_SYSTEM_EXTENSIONS
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AC_PROG_LIBTOOL
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AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc
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# autoconf's default CXXFLAGS are usually "-g -O2". These aren't necessarily
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# the best choice for libprotobuf.
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AC_MSG_CHECKING([C++ compiler flags...])
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AS_IF([test "$protobuf_default_cxxflags" = "yes"],[
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# test_util.cc takes forever to compile with GCC and optimization turned on.
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# But we cannot override anything that is part of CXXFLAGS since it is the
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# last thing added to the command line. The automake docs insist that you
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# should never want to override CXXFLAGS because they represent the intent of
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# the user, and the user knows best. But if the user actually did not set
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# any CXXFLAGS, then AC_PROG_CXX sets them to a rather arbitrary default.
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# That's not user intent at all, but automake still treats it like it is.
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# Grr. Anyway, getting back to the point, this hack here strips out the -O
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# flag from autoconf's defaults and puts it into another variable so that
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# we can override it. BTW, m4 escaping sucks.
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PROTOBUF_OPT_FLAG=`echo "$CXXFLAGS" | grep -o '\-O@<:@0-9@:>@\?'`
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CXXFLAGS=`echo "$CXXFLAGS" | sed -e 's/ \?-O@<:@0-9@:>@\?//g'`
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# Protocol Buffers contains several checks that are intended to be used only
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# for debugging and which might hurt performance. Most users are probably
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# end users who don't want these checks, so add -DNDEBUG by default.
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CXXFLAGS="$CXXFLAGS -DNDEBUG"
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AC_MSG_RESULT([use default: $PROTOBUF_OPT_FLAG $CXXFLAGS])
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],[
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PROTOBUF_OPT_FLAG=
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AC_MSG_RESULT([use user-supplied: $CXXFLAGS])
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])
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AC_SUBST(PROTOBUF_OPT_FLAG)
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ACX_CHECK_SUNCC
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# Checks for header files.
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AC_HEADER_STDC
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AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h stdlib.h unistd.h])
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# Checks for library functions.
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AC_FUNC_MEMCMP
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AC_FUNC_STRTOD
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AC_CHECK_FUNCS([ftruncate memset mkdir strchr strerror strtol])
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HAVE_ZLIB=0
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AS_IF([test "$with_zlib" != no],
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[AC_SEARCH_LIBS([zlibVersion], [z],
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[AC_DEFINE([HAVE_ZLIB], [1], [Enable classes using zlib compression.])
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HAVE_ZLIB=1],
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[if test "$with_zlib" != check; then
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AC_MSG_FAILURE([--with-zlib was given, but test for zlib failed])
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fi])])
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AM_CONDITIONAL([HAVE_ZLIB], [test $HAVE_ZLIB = 1])
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AS_IF([test "$with_protoc" != "no"], [
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PROTOC=$with_protoc
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AS_IF([test "$with_protoc" == "yes"], [
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# No argument given. Use system protoc.
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PROTOC=protoc
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])
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AS_IF([echo "$PROTOC" | grep -q '^@<:@^/@:>@.*/'], [
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# Does not start with a slash, but contains a slash. So, it's a relative
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# path (as opposed to an absolute path or an executable in $PATH).
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# Since it will actually be executed from the src directory, prefix with
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# the current directory. We also insert $ac_top_build_prefix in case this
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# is a nested package and --with-protoc was actually given on the outer
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# package's configure script.
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PROTOC=`pwd`/${ac_top_build_prefix}$PROTOC
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])
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AC_SUBST([PROTOC])
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])
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AM_CONDITIONAL([USE_EXTERNAL_PROTOC], [test "$with_protoc" != "no"])
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ACX_PTHREAD
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AC_CXX_STL_HASH
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AC_CONFIG_SUBDIRS([gtest])
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AC_CONFIG_FILES([Makefile src/Makefile ])
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AC_OUTPUT
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