michael@0: ## Process this file with autoconf to produce configure.
michael@0: ## In general, the safest way to proceed is to run the following:
michael@0: ##    % aclocal -I . -I `pwd`/../autoconf && autoheader && autoconf && automake
michael@0: 
michael@0: # make sure we're interpreted by some minimal autoconf
michael@0: AC_PREREQ(2.57)
michael@0: 
michael@0: AC_INIT(glog, 0.3.1, opensource@google.com)
michael@0: # The argument here is just something that should be in the current directory
michael@0: # (for sanity checking)
michael@0: AC_CONFIG_SRCDIR(README)
michael@0: AC_CONFIG_MACRO_DIR([m4])
michael@0: AM_INIT_AUTOMAKE
michael@0: AM_CONFIG_HEADER(src/config.h)
michael@0: 
michael@0: AC_LANG(C++)
michael@0: 
michael@0: # Checks for programs.
michael@0: AC_PROG_CC
michael@0: AC_PROG_CPP
michael@0: AC_PROG_CXX
michael@0: AM_CONDITIONAL(GCC, test "$GCC" = yes)   # let the Makefile know if we're gcc
michael@0: 
michael@0: AC_PROG_LIBTOOL
michael@0: AC_SUBST(LIBTOOL_DEPS)
michael@0: 
michael@0: # Check whether some low-level functions/files are available
michael@0: AC_HEADER_STDC
michael@0: 
michael@0: # These are tested for by AC_HEADER_STDC, but I check again to set the var
michael@0: AC_CHECK_HEADER(stdint.h, ac_cv_have_stdint_h=1, ac_cv_have_stdint_h=0)
michael@0: AC_CHECK_HEADER(sys/types.h, ac_cv_have_systypes_h=1, ac_cv_have_systypes_h=0)
michael@0: AC_CHECK_HEADER(inttypes.h, ac_cv_have_inttypes_h=1, ac_cv_have_inttypes_h=0)
michael@0: AC_CHECK_HEADERS(unistd.h, ac_cv_have_unistd_h=1, ac_cv_have_unistd_h=0)
michael@0: AC_CHECK_HEADERS(syscall.h)
michael@0: AC_CHECK_HEADERS(sys/syscall.h)
michael@0: # For backtrace with glibc.
michael@0: AC_CHECK_HEADERS(execinfo.h)
michael@0: # For backtrace with libunwind.
michael@0: AC_CHECK_HEADERS(libunwind.h, ac_cv_have_libunwind_h=1, ac_cv_have_libunwind_h=0)
michael@0: AC_CHECK_HEADERS(ucontext.h)
michael@0: AC_CHECK_HEADERS(sys/utsname.h)
michael@0: AC_CHECK_HEADERS(pwd.h)
michael@0: AC_CHECK_HEADERS(syslog.h)
michael@0: AC_CHECK_HEADERS(sys/time.h)
michael@0: AC_CHECK_HEADERS(glob.h)
michael@0: 
michael@0: AC_CHECK_SIZEOF(void *)
michael@0: 
michael@0: # These are the types I need.  We look for them in either stdint.h,
michael@0: # sys/types.h, or inttypes.h, all of which are part of the default-includes.
michael@0: AC_CHECK_TYPE(uint16_t, ac_cv_have_uint16_t=1, ac_cv_have_uint16_t=0)
michael@0: AC_CHECK_TYPE(u_int16_t, ac_cv_have_u_int16_t=1, ac_cv_have_u_int16_t=0)
michael@0: AC_CHECK_TYPE(__uint16, ac_cv_have___uint16=1, ac_cv_have___uint16=0)
michael@0: 
michael@0: AC_CHECK_FUNC(sigaltstack,
michael@0:               AC_DEFINE(HAVE_SIGALTSTACK, 1,
michael@0:                         [Define if you have the `sigaltstack' function]))
michael@0: AC_CHECK_FUNC(dladdr,
michael@0:               AC_DEFINE(HAVE_DLADDR, 1,
michael@0:                         [Define if you have the `dladdr' function]))
michael@0: AC_CHECK_FUNC(fcntl,
michael@0:               AC_DEFINE(HAVE_FCNTL, 1,
michael@0:                         [Define if you have the `fcntl' function]))
michael@0: 
michael@0: AX_C___ATTRIBUTE__
michael@0: # We only care about these two attributes.
michael@0: if test x"$ac_cv___attribute__" = x"yes"; then
michael@0:   ac_cv___attribute___noreturn="__attribute__ ((noreturn))"
michael@0:   ac_cv___attribute___printf_4_5="__attribute__((__format__ (__printf__, 4, 5)))"
michael@0: else
michael@0:   ac_cv___attribute___noreturn=
michael@0:   ac_cv___attribute___printf_4_5=
michael@0: fi
michael@0: 
michael@0: AX_C___BUILTIN_EXPECT
michael@0: if test x"$ac_cv___builtin_expect" = x"yes"; then
michael@0:   ac_cv_have___builtin_expect=1
michael@0: else
michael@0:   ac_cv_have___builtin_expect=0
michael@0: fi
michael@0: 
michael@0: AX_C___SYNC_VAL_COMPARE_AND_SWAP
michael@0: 
michael@0: # On x86_64, instead of libunwind, we can choose to compile with frame-pointers
michael@0: # (This isn't needed on i386, where -fno-omit-frame-pointer is the default).
michael@0: AC_ARG_ENABLE(frame_pointers,
michael@0:               AS_HELP_STRING([--enable-frame-pointers],
michael@0:                              [On x86_64 systems, compile with -fno-omit-frame-pointer (see INSTALL)]),,
michael@0:               enable_frame_pointers=no)
michael@0: AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __x86_64__ == 1 ? 0 : 1])],
michael@0:                   [is_x86_64=yes], [is_x86_64=no])
michael@0: AM_CONDITIONAL(ENABLE_FRAME_POINTERS, test "$enable_frame_pointers" = yes)
michael@0: AM_CONDITIONAL(X86_64, test "$is_x86_64" = yes)
michael@0: 
michael@0: # Some of the code in this directory depends on pthreads
michael@0: ACX_PTHREAD
michael@0: if test x"$acx_pthread_ok" = x"yes"; then
michael@0:   # To make libglog depend on libpthread on Linux, we need to add
michael@0:   # -lpthread in addition to -pthread.
michael@0:   AC_CHECK_LIB(pthread, pthread_self)
michael@0: fi
michael@0: 
michael@0: # Check if there is google-gflags library installed.
michael@0: SAVE_CFLAGS="$CFLAGS"
michael@0: SAVE_LIBS="$LIBS"
michael@0: AC_ARG_WITH(gflags, AS_HELP_STRING[--with-gflags=GFLAGS_DIR],
michael@0:   GFLAGS_CFLAGS="-I${with_gflags}/include"
michael@0:   GFLAGS_LIBS="-L${with_gflags}/lib -lgflags"
michael@0:   CFLAGS="$CFLAGS $GFLAGS_CFLAGS"
michael@0:   LIBS="$LIBS $GFLAGS_LIBS"
michael@0: )
michael@0: AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0)
michael@0: if test x"$ac_cv_have_libgflags" = x"1"; then
michael@0:   AC_DEFINE(HAVE_LIB_GFLAGS, 1, [define if you have google gflags library])
michael@0:   if test x"$GFLAGS_LIBS" = x""; then
michael@0:     GFLAGS_LIBS="-lgflags"
michael@0:   fi
michael@0: else
michael@0:   GFLAGS_CFLAGS=
michael@0:   GFLAGS_LIBS=
michael@0: fi
michael@0: CFLAGS="$SAVE_CFLAGS"
michael@0: LIBS="$SAVE_LIBS"
michael@0: 
michael@0: # TODO(hamaji): Use official m4 macros provided by testing libraries
michael@0: #               once the m4 macro of Google Mocking becomes ready.
michael@0: # Check if there is Google Test library installed.
michael@0: AC_CHECK_PROG(GTEST_CONFIG, gtest-config, "yes")
michael@0: if test x"$GTEST_CONFIG" = "xyes"; then
michael@0:   GTEST_CFLAGS=`gtest-config --cppflags --cxxflags`
michael@0:   GTEST_LIBS=`gtest-config --ldflags --libs`
michael@0:   AC_DEFINE(HAVE_LIB_GTEST, 1, [define if you have google gtest library])
michael@0: 
michael@0:   # Check if there is Google Mocking library installed.
michael@0:   AC_CHECK_PROG(GMOCK_CONFIG, gmock-config, "yes")
michael@0:   if test x"$GMOCK_CONFIG" = "xyes"; then
michael@0:     GMOCK_CFLAGS=`gmock-config --cppflags --cxxflags`
michael@0:     GMOCK_LIBS=`gmock-config --ldflags --libs`
michael@0:     AC_DEFINE(HAVE_LIB_GMOCK, 1, [define if you have google gmock library])
michael@0:   else
michael@0:     # We don't run test cases which use Google Mocking framework.
michael@0:     GMOCK_CFLAGS=
michael@0:     GMOCK_LIBS=
michael@0:   fi
michael@0: else
michael@0:   # We'll use src/googletest.h for our unittests.
michael@0:   GTEST_CFLAGS=
michael@0:   GTEST_LIBS=
michael@0: fi
michael@0: AM_CONDITIONAL(HAVE_GMOCK, test x"$GMOCK_CONFIG" = "xyes")
michael@0: 
michael@0: # We want to link in libunwind if it exists
michael@0: UNWIND_LIBS=
michael@0: # Unfortunately, we need to check the header file in addition to the
michael@0: # lib file to check if libunwind is available since libunwind-0.98
michael@0: # doesn't install all necessary header files.
michael@0: if test x"$ac_cv_have_libunwind_h" = x"1"; then
michael@0:  AC_CHECK_LIB(unwind, backtrace, UNWIND_LIBS=-lunwind)
michael@0: fi
michael@0: AC_SUBST(UNWIND_LIBS)
michael@0: if test x"$UNWIND_LIBS" != x""; then
michael@0:   AC_DEFINE(HAVE_LIB_UNWIND, 1, [define if you have libunwind])
michael@0: fi
michael@0: 
michael@0: # We'd like to use read/write locks in several places in the code.
michael@0: # See if our pthreads support extends to that.  Note: for linux, it
michael@0: # does as long as you define _XOPEN_SOURCE appropriately.
michael@0: AC_RWLOCK
michael@0: 
michael@0: # Find out what namespace 'normal' STL code lives in, and also what namespace
michael@0: # the user wants our classes to be defined in
michael@0: AC_CXX_STL_NAMESPACE
michael@0: AC_DEFINE_GOOGLE_NAMESPACE(google)
michael@0: 
michael@0: AC_CXX_USING_OPERATOR
michael@0: 
michael@0: AC_PC_FROM_UCONTEXT(AC_MSG_WARN(Could not find the PC.  Will not output failed addresses...))
michael@0: 
michael@0: AC_DEFINE_UNQUOTED(TEST_SRC_DIR, "$srcdir", [location of source code])
michael@0: 
michael@0: # These are what's needed by logging.h.in and raw_logging.h.in
michael@0: AC_SUBST(ac_google_start_namespace)
michael@0: AC_SUBST(ac_google_end_namespace)
michael@0: AC_SUBST(ac_google_namespace)
michael@0: AC_SUBST(ac_cv_cxx_using_operator)
michael@0: AC_SUBST(ac_cv___attribute___noreturn)
michael@0: AC_SUBST(ac_cv___attribute___printf_4_5)
michael@0: AC_SUBST(ac_cv_have___builtin_expect)
michael@0: AC_SUBST(ac_cv_have_stdint_h)
michael@0: AC_SUBST(ac_cv_have_systypes_h)
michael@0: AC_SUBST(ac_cv_have_inttypes_h)
michael@0: AC_SUBST(ac_cv_have_unistd_h)
michael@0: AC_SUBST(ac_cv_have_uint16_t)
michael@0: AC_SUBST(ac_cv_have_u_int16_t)
michael@0: AC_SUBST(ac_cv_have___uint16)
michael@0: AC_SUBST(ac_cv_have_libgflags)
michael@0: AC_SUBST(GFLAGS_CFLAGS)
michael@0: AC_SUBST(GTEST_CFLAGS)
michael@0: AC_SUBST(GMOCK_CFLAGS)
michael@0: AC_SUBST(GFLAGS_LIBS)
michael@0: AC_SUBST(GTEST_LIBS)
michael@0: AC_SUBST(GMOCK_LIBS)
michael@0: 
michael@0: # Write generated configuration file
michael@0: AC_CONFIG_FILES([Makefile src/glog/logging.h src/glog/raw_logging.h src/glog/vlog_is_on.h src/glog/stl_logging.h])
michael@0: AC_OUTPUT(libglog.pc)