## 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],[2.0.4-pre],[protobuf@googlegroups.com],[protobuf])
# Detect whether the user specified their own compilation flags. If so then
# we want to respect their decision, otherwise we will twiddle them later.
AS_IF([test "$CXXFLAGS" = ""],[
protobuf_default_cxxflags=yes
])
AC_CONFIG_SRCDIR(src/google/protobuf/message.cc)
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE
AC_ARG_WITH([zlib],
[AS_HELP_STRING([--with-zlib],
[include classes for streaming compressed data in and out @<:@default=check@:>@])],
[],[with_zlib=check])
# Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_LANG([C++])
ACX_USE_SYSTEM_EXTENSIONS
AC_PROG_LIBTOOL
AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc
# autoconf's default CXXFLAGS are usually "-g -O2". These aren't necessarily
# the best choice for libprotobuf.
AC_MSG_CHECKING([C++ compiler flags...])
AS_IF([test "$protobuf_default_cxxflags" = "yes"],[
# test_util.cc takes forever to compile with GCC and optimization turned on.
# But we cannot override anything that is part of CXXFLAGS since it is the
# last thing added to the command line. The automake docs insist that you
# should never want to override CXXFLAGS because they represent the intent of
# the user, and the user knows best. But if the user actually did not set
# any CXXFLAGS, then AC_PROG_CXX sets them to a rather arbitrary default.
# That's not user intent at all, but automake still treats it like it is.
# Grr. Anyway, getting back to the point, this hack here strips out the -O
# flag from autoconf's defaults and puts it into another variable so that
# we can override it. BTW, m4 escaping sucks.
PROTOBUF_OPT_FLAG=`echo "$CXXFLAGS" | grep -o '\-O@<:@0-9@:>@\?'`
CXXFLAGS=`echo "$CXXFLAGS" | sed -e 's/ \?-O@<:@0-9@:>@\?//g'`
# Protocol Buffers contains several checks that are intended to be used only
# for debugging and which might hurt performance. Most users are probably
# end users who don't want these checks, so add -DNDEBUG by default.
CXXFLAGS="$CXXFLAGS -DNDEBUG"
AC_MSG_RESULT([use default: $PROTOBUF_OPT_FLAG $CXXFLAGS])
],[
PROTOBUF_OPT_FLAG=
AC_MSG_RESULT([use user-supplied: $CXXFLAGS])
])
AC_SUBST(PROTOBUF_OPT_FLAG)
ACX_CHECK_SUNCC
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([fcntl.h inttypes.h limits.h stdlib.h unistd.h])
# Checks for library functions.
AC_FUNC_MEMCMP
AC_FUNC_STRTOD
AC_CHECK_FUNCS([ftruncate memset mkdir strchr strerror strtol])
HAVE_ZLIB=0
AS_IF([test "$with_zlib" != no],
[AC_SEARCH_LIBS([zlibVersion], [z],
[AC_DEFINE([HAVE_ZLIB], [1], [Enable classes using zlib compression.])
HAVE_ZLIB=1],
[if test "$with_zlib" != check; then
AC_MSG_FAILURE([--with-zlib was given, but test for zlib failed])
fi])])
AM_CONDITIONAL([HAVE_ZLIB], [test $HAVE_ZLIB = 1])
ACX_PTHREAD
AC_CXX_STL_HASH
AC_CONFIG_SUBDIRS([gtest])
AC_CONFIG_FILES([Makefile src/Makefile ])
AC_OUTPUT
