| ## 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, 0.1, 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 "$GCC" = yes) # let the Makefile know if we're gcc |
| |
| AC_PROG_LIBTOOL |
| AC_SUBST(LIBTOOL_DEPS) |
| |
| # Check whether some low-level functions/files are available |
| AC_HEADER_STDC |
| |
| # These are tested for by AC_HEADER_STDC, but I check again to set the var |
| AC_CHECK_HEADER(stdint.h, ac_cv_have_stdint_h=1, ac_cv_have_stdint_h=0) |
| AC_CHECK_HEADER(sys/types.h, ac_cv_have_systypes_h=1, ac_cv_have_systypes_h=0) |
| AC_CHECK_HEADER(inttypes.h, ac_cv_have_inttypes_h=1, ac_cv_have_inttypes_h=0) |
| AC_CHECK_HEADERS(syscall.h) |
| AC_CHECK_HEADERS(sys/syscall.h) |
| # For backtrace with glibc. |
| # TODO(hamaji): Support other platforms using libgcc. |
| AC_CHECK_HEADERS(execinfo.h) |
| |
| AC_CHECK_SIZEOF(void *) |
| |
| # These are the types I need. We look for them in either stdint.h, |
| # sys/types.h, or inttypes.h, all of which are part of the default-includes. |
| AC_CHECK_TYPE(uint16_t, ac_cv_have_uint16_t=1, ac_cv_have_uint16_t=0) |
| AC_CHECK_TYPE(u_int16_t, ac_cv_have_u_int16_t=1, ac_cv_have_u_int16_t=0) |
| AC_CHECK_TYPE(__uint16, ac_cv_have___uint16=1, ac_cv_have___uint16=0) |
| |
| AC_CHECK_FUNC(sigaltstack, |
| AC_DEFINE(HAVE_SIGALTSTACK, 1, |
| [Define if you have the `sigaltstack' function])) |
| |
| AX_C___ATTRIBUTE__ |
| # We only care about these two attributes. |
| if test x"$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"$ac_cv___builtin_expect" = x"yes"; then |
| ac_cv_have___builtin_expect=1 |
| else |
| ac_cv_have___builtin_expect=0 |
| fi |
| |
| # On x86_64, instead of libunwind, we can choose to compile with frame-pointers |
| # (This isn't needed on i386, where -fno-omit-frame-pointer is the default). |
| AC_ARG_ENABLE(frame_pointers, |
| AS_HELP_STRING([--enable-frame-pointers], |
| [On x86_64 systems, compile with -fno-omit-frame-pointer (see INSTALL)]), |
| enable_frame_pointers=no) |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __x86_64__ == 1 ? 0 : 1])], |
| [is_x86_64=yes], [is_x86_64=no]) |
| AM_CONDITIONAL(ENABLE_FRAME_POINTERS, test "$enable_frame_pointers" = yes) |
| AM_CONDITIONAL(X86_64, test "$is_x86_64" = yes) |
| |
| # Some of the code in this directory depends on pthreads |
| ACX_PTHREAD |
| |
| # Check if there is google-gflags library installed. |
| AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0) |
| if test x"$ac_cv_have_libgflags" = x"1"; then |
| GFLAGS_LIBS=-lgflags |
| AC_DEFINE(HAVE_LIB_GFLAGS, 1, [define if you have google gflags library]) |
| else |
| GFLAGS_LIBS= |
| 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 |
| |
| # 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_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_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 |
