configure.ac - third_party/glog - Git at Google

 ## Process this file with autoconf to produce configure.
 ## In general, the safest way to proceed is to run the following:
 ##    % aclocal -I . -I `pwd`/../autoconf && autoheader && autoconf && automake

 # make sure we're interpreted by some minimal autoconf
 AC_PREREQ(2.57)

 AC_INIT(glog, 0.3.0, opensource@google.com)
 # The argument here is just something that should be in the current directory
 # (for sanity checking)
 AC_CONFIG_SRCDIR(README)
 AM_INIT_AUTOMAKE
 AM_CONFIG_HEADER(src/config.h)

 # Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_CXX
 AM_CONDITIONAL(GCC, test "$GCC" = yes)   # let the Makefile know if we're gcc

 AC_PROG_LIBTOOL
 AC_SUBST(LIBTOOL_DEPS)

 # Check whether some low-level functions/files are available
 AC_HEADER_STDC

 # These are tested for by AC_HEADER_STDC, but I check again to set the var
 AC_CHECK_HEADER(stdint.h, ac_cv_have_stdint_h=1, ac_cv_have_stdint_h=0)
 AC_CHECK_HEADER(sys/types.h, ac_cv_have_systypes_h=1, ac_cv_have_systypes_h=0)
 AC_CHECK_HEADER(inttypes.h, ac_cv_have_inttypes_h=1, ac_cv_have_inttypes_h=0)
 AC_CHECK_HEADERS(unistd.h, ac_cv_have_unistd_h=1, ac_cv_have_unistd_h=0)
 AC_CHECK_HEADERS(syscall.h)
 AC_CHECK_HEADERS(sys/syscall.h)
 # For backtrace with glibc.
 AC_CHECK_HEADERS(execinfo.h)
 # For backtrace with libunwind.
 AC_CHECK_HEADERS(libunwind.h)
 AC_CHECK_HEADERS(ucontext.h)
 AC_CHECK_HEADERS(sys/utsname.h)
 AC_CHECK_HEADERS(pwd.h)
 AC_CHECK_HEADERS(syslog.h)
 AC_CHECK_HEADERS(sys/time.h)
 AC_CHECK_HEADERS(glob.h)

 AC_CHECK_SIZEOF(void *)

 # These are the types I need.  We look for them in either stdint.h,
 # sys/types.h, or inttypes.h, all of which are part of the default-includes.
 AC_CHECK_TYPE(uint16_t, ac_cv_have_uint16_t=1, ac_cv_have_uint16_t=0)
 AC_CHECK_TYPE(u_int16_t, ac_cv_have_u_int16_t=1, ac_cv_have_u_int16_t=0)
 AC_CHECK_TYPE(__uint16, ac_cv_have___uint16=1, ac_cv_have___uint16=0)

 AC_CHECK_FUNC(sigaltstack,
               AC_DEFINE(HAVE_SIGALTSTACK, 1,
                         [Define if you have the `sigaltstack' function]))
 AC_CHECK_FUNC(dladdr,
               AC_DEFINE(HAVE_DLADDR, 1,
                         [Define if you have the `dladdr' function]))
 AC_CHECK_FUNC(fcntl,
               AC_DEFINE(HAVE_FCNTL, 1,
                         [Define if you have the `fcntl' function]))

 AX_C___ATTRIBUTE__
 # We only care about these two attributes.
 if test x"$ac_cv___attribute__" = x"yes"; then
   ac_cv___attribute___noreturn="__attribute__ ((noreturn))"
   ac_cv___attribute___printf_4_5="__attribute__((__format__ (__printf__, 4, 5)))"
 else
   ac_cv___attribute___noreturn=
   ac_cv___attribute___printf_4_5=
 fi

 AX_C___BUILTIN_EXPECT
 if test x"$ac_cv___builtin_expect" = x"yes"; then
   ac_cv_have___builtin_expect=1
 else
   ac_cv_have___builtin_expect=0
 fi

 AX_C___SYNC_VAL_COMPARE_AND_SWAP

 # On x86_64, instead of libunwind, we can choose to compile with frame-pointers
 # (This isn't needed on i386, where -fno-omit-frame-pointer is the default).
 AC_ARG_ENABLE(frame_pointers,
               AS_HELP_STRING([--enable-frame-pointers],
                              [On x86_64 systems, compile with -fno-omit-frame-pointer (see INSTALL)]),
               enable_frame_pointers=no)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __x86_64__ == 1 ? 0 : 1])],
                   [is_x86_64=yes], [is_x86_64=no])
 AM_CONDITIONAL(ENABLE_FRAME_POINTERS, test "$enable_frame_pointers" = yes)
 AM_CONDITIONAL(X86_64, test "$is_x86_64" = yes)

 # Some of the code in this directory depends on pthreads
 ACX_PTHREAD
 if test x"$acx_pthread_ok" = x"yes"; then
   # To make libglog depend on libpthread on Linux, we need to add
   # -lpthread in addition to -pthread.
   AC_CHECK_LIB(pthread, pthread_self)
 fi

 # Check if there is google-gflags library installed.
 SAVE_CFLAGS="$CFLAGS"
 SAVE_LIBS="$LIBS"
 AC_ARG_WITH(gflags, AS_HELP_STRING[--with-gflags=GFLAGS_DIR],
   GFLAGS_CFLAGS="-I${with_gflags}/include"
   GFLAGS_LIBS="-L${with_gflags}/lib -lgflags"
   CFLAGS="$CFLAGS $GFLAGS_CFLAGS"
   LIBS="$LIBS $GFLAGS_LIBS"
 )
 AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0)
 if test x"$ac_cv_have_libgflags" = x"1"; then
   AC_DEFINE(HAVE_LIB_GFLAGS, 1, [define if you have google gflags library])
   if test x"$GFLAGS_LIBS" = x""; then
     GFLAGS_LIBS="-lgflags"
   fi
 else
   GFLAGS_CFLAGS=
   GFLAGS_LIBS=
 fi
 CFLAGS="$SAVE_CFLAGS"
 LIBS="$SAVE_LIBS"

 # TODO(hamaji): Use official m4 macros provided by testing libraries
 #               once the m4 macro of Google Mocking becomes ready.
 # Check if there is Google Test library installed.
 AC_CHECK_PROG(GTEST_CONFIG, gtest-config, "yes")
 if test x"$GTEST_CONFIG" = "xyes"; then
   GTEST_CFLAGS=`gtest-config --cppflags --cxxflags`
   GTEST_LIBS=`gtest-config --ldflags --libs`
   AC_DEFINE(HAVE_LIB_GTEST, 1, [define if you have google gtest library])

   # Check if there is Google Mocking library installed.
   AC_CHECK_PROG(GMOCK_CONFIG, gmock-config, "yes")
   if test x"$GMOCK_CONFIG" = "xyes"; then
     GMOCK_CFLAGS=`gmock-config --cppflags --cxxflags`
     GMOCK_LIBS=`gmock-config --ldflags --libs`
     AC_DEFINE(HAVE_LIB_GMOCK, 1, [define if you have google gmock library])
   else
     # We don't run test cases which use Google Mocking framework.
     GMOCK_CFLAGS=
     GMOCK_LIBS=
   fi
 else
   # We'll use src/googletest.h for our unittests.
   GTEST_CFLAGS=
   GTEST_LIBS=
 fi
 AM_CONDITIONAL(HAVE_GMOCK, test x"$GMOCK_CONFIG" = "xyes")

 # We want to link in libunwind if it exists
 UNWIND_LIBS=
 # Unfortunately, we need to check the header file in addition to the
 # lib file to check if libunwind is available since libunwind-0.98
 # doesn't install all necessary header files.
 if test x"$ac_cv_have_libunwind_h" = x"1"; then
  AC_CHECK_LIB(unwind, backtrace, UNWIND_LIBS=-lunwind)
 fi
 AC_SUBST(UNWIND_LIBS)
 if test x"$UNWIND_LIBS" != x""; then
   AC_DEFINE(HAVE_LIB_UNWIND, 1, [define if you have libunwind])
 fi

 # We'd like to use read/write locks in several places in the code.
 # See if our pthreads support extends to that.  Note: for linux, it
 # does as long as you define _XOPEN_SOURCE appropriately.
 AC_RWLOCK

 # Find out what namespace 'normal' STL code lives in, and also what namespace
 # the user wants our classes to be defined in
 AC_CXX_STL_NAMESPACE
 AC_DEFINE_GOOGLE_NAMESPACE(google)

 AC_CXX_USING_OPERATOR

 AC_PC_FROM_UCONTEXT(AC_MSG_WARN(Could not find the PC.  Will not output failed addresses...))

 # These are what's needed by logging.h.in and raw_logging.h.in
 AC_SUBST(ac_google_start_namespace)
 AC_SUBST(ac_google_end_namespace)
 AC_SUBST(ac_google_namespace)
 AC_SUBST(ac_cv_cxx_using_operator)
 AC_SUBST(ac_cv___attribute___noreturn)
 AC_SUBST(ac_cv___attribute___printf_4_5)
 AC_SUBST(ac_cv_have___builtin_expect)
 AC_SUBST(ac_cv_have_stdint_h)
 AC_SUBST(ac_cv_have_systypes_h)
 AC_SUBST(ac_cv_have_inttypes_h)
 AC_SUBST(ac_cv_have_unistd_h)
 AC_SUBST(ac_cv_have_uint16_t)
 AC_SUBST(ac_cv_have_u_int16_t)
 AC_SUBST(ac_cv_have___uint16)
 AC_SUBST(ac_cv_have_libgflags)
 AC_SUBST(GFLAGS_CFLAGS)
 AC_SUBST(GTEST_CFLAGS)
 AC_SUBST(GMOCK_CFLAGS)
 AC_SUBST(GFLAGS_LIBS)
 AC_SUBST(GTEST_LIBS)
 AC_SUBST(GMOCK_LIBS)

 # Write generated configuration file
 AC_CONFIG_FILES([Makefile src/glog/logging.h src/glog/raw_logging.h src/glog/vlog_is_on.h src/glog/stl_logging.h])
 AC_OUTPUT(libglog.pc)
	## Process this file with autoconf to produce configure.
	## In general, the safest way to proceed is to run the following:
	## % aclocal -I . -I `pwd`/../autoconf && autoheader && autoconf && automake

	# make sure we're interpreted by some minimal autoconf
	AC_PREREQ(2.57)

	AC_INIT(glog, 0.3.0, opensource@google.com)
	# The argument here is just something that should be in the current directory
	# (for sanity checking)
	AC_CONFIG_SRCDIR(README)
	AM_INIT_AUTOMAKE
	AM_CONFIG_HEADER(src/config.h)

	# Checks for programs.
	AC_PROG_CC
	AC_PROG_CPP
	AC_PROG_CXX
	AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc

	AC_PROG_LIBTOOL
	AC_SUBST(LIBTOOL_DEPS)

	# Check whether some low-level functions/files are available
	AC_HEADER_STDC

	# These are tested for by AC_HEADER_STDC, but I check again to set the var
	AC_CHECK_HEADER(stdint.h, ac_cv_have_stdint_h=1, ac_cv_have_stdint_h=0)
	AC_CHECK_HEADER(sys/types.h, ac_cv_have_systypes_h=1, ac_cv_have_systypes_h=0)
	AC_CHECK_HEADER(inttypes.h, ac_cv_have_inttypes_h=1, ac_cv_have_inttypes_h=0)
	AC_CHECK_HEADERS(unistd.h, ac_cv_have_unistd_h=1, ac_cv_have_unistd_h=0)
	AC_CHECK_HEADERS(syscall.h)
	AC_CHECK_HEADERS(sys/syscall.h)
	# For backtrace with glibc.
	AC_CHECK_HEADERS(execinfo.h)
	# For backtrace with libunwind.
	AC_CHECK_HEADERS(libunwind.h)
	AC_CHECK_HEADERS(ucontext.h)
	AC_CHECK_HEADERS(sys/utsname.h)
	AC_CHECK_HEADERS(pwd.h)
	AC_CHECK_HEADERS(syslog.h)
	AC_CHECK_HEADERS(sys/time.h)
	AC_CHECK_HEADERS(glob.h)

	AC_CHECK_SIZEOF(void *)

	# These are the types I need. We look for them in either stdint.h,
	# sys/types.h, or inttypes.h, all of which are part of the default-includes.
	AC_CHECK_TYPE(uint16_t, ac_cv_have_uint16_t=1, ac_cv_have_uint16_t=0)
	AC_CHECK_TYPE(u_int16_t, ac_cv_have_u_int16_t=1, ac_cv_have_u_int16_t=0)
	AC_CHECK_TYPE(__uint16, ac_cv_have___uint16=1, ac_cv_have___uint16=0)

	AC_CHECK_FUNC(sigaltstack,
	AC_DEFINE(HAVE_SIGALTSTACK, 1,
	[Define if you have the `sigaltstack' function]))
	AC_CHECK_FUNC(dladdr,
	AC_DEFINE(HAVE_DLADDR, 1,
	[Define if you have the `dladdr' function]))
	AC_CHECK_FUNC(fcntl,
	AC_DEFINE(HAVE_FCNTL, 1,
	[Define if you have the `fcntl' function]))

	AX_C___ATTRIBUTE__
	# We only care about these two attributes.
	if test x"$ac_cv___attribute__" = x"yes"; then
	ac_cv___attribute___noreturn="__attribute__ ((noreturn))"
	ac_cv___attribute___printf_4_5="__attribute__((__format__ (__printf__, 4, 5)))"
	else
	ac_cv___attribute___noreturn=
	ac_cv___attribute___printf_4_5=
	fi

	AX_C___BUILTIN_EXPECT
	if test x"$ac_cv___builtin_expect" = x"yes"; then
	ac_cv_have___builtin_expect=1
	else
	ac_cv_have___builtin_expect=0
	fi

	AX_C___SYNC_VAL_COMPARE_AND_SWAP

	# On x86_64, instead of libunwind, we can choose to compile with frame-pointers
	# (This isn't needed on i386, where -fno-omit-frame-pointer is the default).
	AC_ARG_ENABLE(frame_pointers,
	AS_HELP_STRING([--enable-frame-pointers],
	[On x86_64 systems, compile with -fno-omit-frame-pointer (see INSTALL)]),
	enable_frame_pointers=no)
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __x86_64__ == 1 ? 0 : 1])],
	[is_x86_64=yes], [is_x86_64=no])
	AM_CONDITIONAL(ENABLE_FRAME_POINTERS, test "$enable_frame_pointers" = yes)
	AM_CONDITIONAL(X86_64, test "$is_x86_64" = yes)

	# Some of the code in this directory depends on pthreads
	ACX_PTHREAD
	if test x"$acx_pthread_ok" = x"yes"; then
	# To make libglog depend on libpthread on Linux, we need to add
	# -lpthread in addition to -pthread.
	AC_CHECK_LIB(pthread, pthread_self)
	fi

	# Check if there is google-gflags library installed.
	SAVE_CFLAGS="$CFLAGS"
	SAVE_LIBS="$LIBS"
	AC_ARG_WITH(gflags, AS_HELP_STRING[--with-gflags=GFLAGS_DIR],
	GFLAGS_CFLAGS="-I${with_gflags}/include"
	GFLAGS_LIBS="-L${with_gflags}/lib -lgflags"
	CFLAGS="$CFLAGS $GFLAGS_CFLAGS"
	LIBS="$LIBS $GFLAGS_LIBS"
	)
	AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0)
	if test x"$ac_cv_have_libgflags" = x"1"; then
	AC_DEFINE(HAVE_LIB_GFLAGS, 1, [define if you have google gflags library])
	if test x"$GFLAGS_LIBS" = x""; then
	GFLAGS_LIBS="-lgflags"
	fi
	else
	GFLAGS_CFLAGS=
	GFLAGS_LIBS=
	fi
	CFLAGS="$SAVE_CFLAGS"
	LIBS="$SAVE_LIBS"

	# TODO(hamaji): Use official m4 macros provided by testing libraries
	# once the m4 macro of Google Mocking becomes ready.
	# Check if there is Google Test library installed.
	AC_CHECK_PROG(GTEST_CONFIG, gtest-config, "yes")
	if test x"$GTEST_CONFIG" = "xyes"; then
	GTEST_CFLAGS=`gtest-config --cppflags --cxxflags`
	GTEST_LIBS=`gtest-config --ldflags --libs`
	AC_DEFINE(HAVE_LIB_GTEST, 1, [define if you have google gtest library])

	# Check if there is Google Mocking library installed.
	AC_CHECK_PROG(GMOCK_CONFIG, gmock-config, "yes")
	if test x"$GMOCK_CONFIG" = "xyes"; then
	GMOCK_CFLAGS=`gmock-config --cppflags --cxxflags`
	GMOCK_LIBS=`gmock-config --ldflags --libs`
	AC_DEFINE(HAVE_LIB_GMOCK, 1, [define if you have google gmock library])
	else
	# We don't run test cases which use Google Mocking framework.
	GMOCK_CFLAGS=
	GMOCK_LIBS=
	fi
	else
	# We'll use src/googletest.h for our unittests.
	GTEST_CFLAGS=
	GTEST_LIBS=
	fi
	AM_CONDITIONAL(HAVE_GMOCK, test x"$GMOCK_CONFIG" = "xyes")

	# We want to link in libunwind if it exists
	UNWIND_LIBS=
	# Unfortunately, we need to check the header file in addition to the
	# lib file to check if libunwind is available since libunwind-0.98
	# doesn't install all necessary header files.
	if test x"$ac_cv_have_libunwind_h" = x"1"; then
	AC_CHECK_LIB(unwind, backtrace, UNWIND_LIBS=-lunwind)
	fi
	AC_SUBST(UNWIND_LIBS)
	if test x"$UNWIND_LIBS" != x""; then
	AC_DEFINE(HAVE_LIB_UNWIND, 1, [define if you have libunwind])
	fi

	# We'd like to use read/write locks in several places in the code.
	# See if our pthreads support extends to that. Note: for linux, it
	# does as long as you define _XOPEN_SOURCE appropriately.
	AC_RWLOCK

	# Find out what namespace 'normal' STL code lives in, and also what namespace
	# the user wants our classes to be defined in
	AC_CXX_STL_NAMESPACE
	AC_DEFINE_GOOGLE_NAMESPACE(google)

	AC_CXX_USING_OPERATOR

	AC_PC_FROM_UCONTEXT(AC_MSG_WARN(Could not find the PC. Will not output failed addresses...))

	# These are what's needed by logging.h.in and raw_logging.h.in
	AC_SUBST(ac_google_start_namespace)
	AC_SUBST(ac_google_end_namespace)
	AC_SUBST(ac_google_namespace)
	AC_SUBST(ac_cv_cxx_using_operator)
	AC_SUBST(ac_cv___attribute___noreturn)
	AC_SUBST(ac_cv___attribute___printf_4_5)
	AC_SUBST(ac_cv_have___builtin_expect)
	AC_SUBST(ac_cv_have_stdint_h)
	AC_SUBST(ac_cv_have_systypes_h)
	AC_SUBST(ac_cv_have_inttypes_h)
	AC_SUBST(ac_cv_have_unistd_h)
	AC_SUBST(ac_cv_have_uint16_t)
	AC_SUBST(ac_cv_have_u_int16_t)
	AC_SUBST(ac_cv_have___uint16)
	AC_SUBST(ac_cv_have_libgflags)
	AC_SUBST(GFLAGS_CFLAGS)
	AC_SUBST(GTEST_CFLAGS)
	AC_SUBST(GMOCK_CFLAGS)
	AC_SUBST(GFLAGS_LIBS)
	AC_SUBST(GTEST_LIBS)
	AC_SUBST(GMOCK_LIBS)

	# Write generated configuration file
	AC_CONFIG_FILES([Makefile src/glog/logging.h src/glog/raw_logging.h src/glog/vlog_is_on.h src/glog/stl_logging.h])
	AC_OUTPUT(libglog.pc)