4f81d0f209
git-svn-id: https://google-glog.googlecode.com/svn/trunk@21 eb4d4688-79bd-11dd-afb4-1d65580434c0
180 lines
7.1 KiB
Plaintext
180 lines
7.1 KiB
Plaintext
## Process this file with autoconf to produce configure.
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## In general, the safest way to proceed is to run the following:
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## % aclocal -I . -I `pwd`/../autoconf && autoheader && autoconf && automake
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# make sure we're interpreted by some minimal autoconf
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AC_PREREQ(2.57)
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AC_INIT(glog, 0.1.2, opensource@google.com)
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# The argument here is just something that should be in the current directory
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# (for sanity checking)
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AC_CONFIG_SRCDIR(README)
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AM_INIT_AUTOMAKE
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AM_CONFIG_HEADER(src/config.h)
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# Checks for programs.
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AC_PROG_CC
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AC_PROG_CPP
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AC_PROG_CXX
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AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc
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AC_PROG_LIBTOOL
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AC_SUBST(LIBTOOL_DEPS)
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# Check whether some low-level functions/files are available
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AC_HEADER_STDC
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# These are tested for by AC_HEADER_STDC, but I check again to set the var
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AC_CHECK_HEADER(stdint.h, ac_cv_have_stdint_h=1, ac_cv_have_stdint_h=0)
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AC_CHECK_HEADER(sys/types.h, ac_cv_have_systypes_h=1, ac_cv_have_systypes_h=0)
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AC_CHECK_HEADER(inttypes.h, ac_cv_have_inttypes_h=1, ac_cv_have_inttypes_h=0)
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AC_CHECK_HEADERS(syscall.h)
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AC_CHECK_HEADERS(sys/syscall.h)
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# For backtrace with glibc.
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AC_CHECK_HEADERS(execinfo.h)
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# For backtrace with libunwind.
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AC_CHECK_HEADERS(libunwind.h, ac_cv_have_libunwind_h=1, ac_cv_have_libunwind_h=0)
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AC_CHECK_HEADERS(ucontext.h)
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AC_CHECK_SIZEOF(void *)
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# These are the types I need. We look for them in either stdint.h,
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# sys/types.h, or inttypes.h, all of which are part of the default-includes.
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AC_CHECK_TYPE(uint16_t, ac_cv_have_uint16_t=1, ac_cv_have_uint16_t=0)
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AC_CHECK_TYPE(u_int16_t, ac_cv_have_u_int16_t=1, ac_cv_have_u_int16_t=0)
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AC_CHECK_TYPE(__uint16, ac_cv_have___uint16=1, ac_cv_have___uint16=0)
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AC_CHECK_FUNC(sigaltstack,
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AC_DEFINE(HAVE_SIGALTSTACK, 1,
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[Define if you have the `sigaltstack' function]))
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AC_CHECK_FUNC(dladdr,
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AC_DEFINE(HAVE_DLADDR, 1,
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[Define if you have the `dladdr' function]))
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AX_C___ATTRIBUTE__
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# We only care about these two attributes.
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if test x"$ac_cv___attribute__" = x"yes"; then
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ac_cv___attribute___noreturn="__attribute__ ((noreturn))"
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ac_cv___attribute___printf_4_5="__attribute__((__format__ (__printf__, 4, 5)))"
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else
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ac_cv___attribute___noreturn=
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ac_cv___attribute___printf_4_5=
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fi
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AX_C___BUILTIN_EXPECT
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if test x"$ac_cv___builtin_expect" = x"yes"; then
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ac_cv_have___builtin_expect=1
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else
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ac_cv_have___builtin_expect=0
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fi
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AX_C___SYNC_VAL_COMPARE_AND_SWAP
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# On x86_64, instead of libunwind, we can choose to compile with frame-pointers
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# (This isn't needed on i386, where -fno-omit-frame-pointer is the default).
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AC_ARG_ENABLE(frame_pointers,
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AS_HELP_STRING([--enable-frame-pointers],
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[On x86_64 systems, compile with -fno-omit-frame-pointer (see INSTALL)]),
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enable_frame_pointers=no)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __x86_64__ == 1 ? 0 : 1])],
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[is_x86_64=yes], [is_x86_64=no])
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AM_CONDITIONAL(ENABLE_FRAME_POINTERS, test "$enable_frame_pointers" = yes)
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AM_CONDITIONAL(X86_64, test "$is_x86_64" = yes)
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# Some of the code in this directory depends on pthreads
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ACX_PTHREAD
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# To make libglog depend on libpthread on Linux, we need to add
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# -lpthread in addition to -pthread.
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AC_CHECK_LIB(pthread, pthread_self)
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# Check if there is google-gflags library installed.
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AC_CHECK_LIB(gflags, main, ac_cv_have_libgflags=1, ac_cv_have_libgflags=0)
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if test x"$ac_cv_have_libgflags" = x"1"; then
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GFLAGS_LIBS=-lgflags
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AC_DEFINE(HAVE_LIB_GFLAGS, 1, [define if you have google gflags library])
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else
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GFLAGS_LIBS=
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fi
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# We want to link in libunwind if it exists
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UNWIND_LIBS=
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# Unfortunately, we need to check the header file in addition to the
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# lib file to check if libunwind is available since libunwind-0.98
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# doesn't install all necessary header files.
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if test x"$ac_cv_have_libunwind_h" = x"1"; then
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AC_CHECK_LIB(unwind, backtrace, UNWIND_LIBS=-lunwind)
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fi
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AC_SUBST(UNWIND_LIBS)
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if test x"$UNWIND_LIBS" != x""; then
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AC_DEFINE(HAVE_LIB_UNWIND, 1, [define if you have libunwind])
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fi
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# We'd like to use read/write locks in several places in the code.
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# See if our pthreads support extends to that. Note: for linux, it
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# does as long as you define _XOPEN_SOURCE appropriately.
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AC_RWLOCK
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# Find out what namespace 'normal' STL code lives in, and also what namespace
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# the user wants our classes to be defined in
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AC_CXX_STL_NAMESPACE
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AC_DEFINE_GOOGLE_NAMESPACE(google)
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AC_CXX_USING_OPERATOR
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# We want to access the "PC" (Program Counter) register from a struct
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# ucontext. Every system has its own way of doing that. We try all the
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# possibilities we know about. Note REG_PC should come first (REG_RIP
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# is also defined on solaris, but does the wrong thing).
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AC_MSG_CHECKING([how to access the program counter from a struct ucontext])
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pc_fields=" uc_mcontext.gregs[[REG_PC]]" # Solaris x86 (32 + 64 bit)
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pc_fields="$pc_fields uc_mcontext.gregs[[REG_EIP]]" # Linux (i386)
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pc_fields="$pc_fields uc_mcontext.gregs[[REG_RIP]]" # Linux (x86_64)
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pc_fields="$pc_fields uc_mcontext.sc_ip" # Linux (ia64)
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pc_fields="$pc_fields uc_mcontext.uc_regs->gregs[[PT_NIP]]" # Linux (ppc)
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pc_fields="$pc_fields uc_mcontext.gregs[[R15]]" # Linux (arm old [untested])
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pc_fields="$pc_fields uc_mcontext.arm_pc" # Linux (arm new [untested])
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pc_fields="$pc_fields uc_mcontext.mc_eip" # FreeBSD (i386)
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pc_fields="$pc_fields uc_mcontext.mc_rip" # FreeBSD (x86_64 [untested])
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pc_fields="$pc_fields uc_mcontext->ss.eip" # OS X (i386, <=10.4)
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pc_fields="$pc_fields uc_mcontext->__ss.__eip" # OS X (i386, >=10.5)
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pc_fields="$pc_fields uc_mcontext->ss.rip" # OS X (x86_64)
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pc_fields="$pc_fields uc_mcontext->__ss.__rip" # OS X (>=10.5 [untested])
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pc_fields="$pc_fields uc_mcontext->ss.srr0" # OS X (ppc, ppc64 [untested])
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pc_fields="$pc_fields uc_mcontext->__ss.__srr0" # OS X (>=10.5 [untested])
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pc_field_found=false
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for pc_field in $pc_fields; do
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if ! $pc_field_found; then
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AC_TRY_COMPILE([#define _GNU_SOURCE 1
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#include <ucontext.h>],
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[ucontext_t u; return u.$pc_field == 0;],
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AC_DEFINE_UNQUOTED(PC_FROM_UCONTEXT, $pc_field,
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How to access the PC from a struct ucontext)
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AC_MSG_RESULT([$pc_field])
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pc_field_found=true)
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fi
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done
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if ! $pc_field_found; then
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AC_MSG_WARN(Could not find the PC. Will not output failed addresses...)
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fi
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# These are what's needed by logging.h.in and raw_logging.h.in
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AC_SUBST(ac_google_start_namespace)
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AC_SUBST(ac_google_end_namespace)
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AC_SUBST(ac_google_namespace)
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AC_SUBST(ac_cv_cxx_using_operator)
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AC_SUBST(ac_cv___attribute___noreturn)
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AC_SUBST(ac_cv___attribute___printf_4_5)
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AC_SUBST(ac_cv_have___builtin_expect)
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AC_SUBST(ac_cv_have_stdint_h)
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AC_SUBST(ac_cv_have_systypes_h)
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AC_SUBST(ac_cv_have_inttypes_h)
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AC_SUBST(ac_cv_have_uint16_t)
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AC_SUBST(ac_cv_have_u_int16_t)
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AC_SUBST(ac_cv_have___uint16)
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AC_SUBST(ac_cv_have_libgflags)
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AC_SUBST(GFLAGS_LIBS)
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# Write generated configuration file
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AC_CONFIG_FILES([Makefile src/glog/logging.h src/glog/raw_logging.h src/glog/vlog_is_on.h src/glog/stl_logging.h])
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AC_OUTPUT
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