diff options
Diffstat (limited to 'gcc-4.4.3/libmudflap/configure.ac')
| -rw-r--r-- | gcc-4.4.3/libmudflap/configure.ac | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/gcc-4.4.3/libmudflap/configure.ac b/gcc-4.4.3/libmudflap/configure.ac new file mode 100644 index 000000000..359573a7e --- /dev/null +++ b/gcc-4.4.3/libmudflap/configure.ac @@ -0,0 +1,274 @@ +# Process this file with autoconf to produce a configure script, like so: +# aclocal -I .. -I ../config && autoconf && autoheader && automake + +AC_PREREQ(2.59) +AC_INIT(libmudflap, 1.0) +AC_CONFIG_SRCDIR(mf-runtime.c) +AC_CANONICAL_SYSTEM +ACX_NONCANONICAL_TARGET + +AM_INIT_AUTOMAKE + +AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) +AC_ARG_ENABLE(version-specific-runtime-libs, +[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], +[case "$enableval" in + yes) version_specific_libs=yes ;; + no) version_specific_libs=no ;; + *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; + esac], +[version_specific_libs=no]) +AC_MSG_RESULT($version_specific_libs) + +AM_MAINTAINER_MODE +AC_EXEEXT + +AM_ENABLE_MULTILIB(, ..) + +target_alias=${target_alias-$host_alias} +AC_SUBST(target_alias) + +AC_CONFIG_HEADERS(config.h) + +AC_LANG_C +# The same as in boehm-gc and libstdc++. Have to borrow it from there. +# We must force CC to /not/ be precious variables; otherwise +# the wrong, non-multilib-adjusted value will be used in multilibs. +# As a side effect, we have to subst CFLAGS ourselves. + +m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) +m4_define([_AC_ARG_VAR_PRECIOUS],[]) +AC_PROG_CC +m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) + +AC_SUBST(CFLAGS) + +if test "x$GCC" != "xyes"; then + AC_MSG_ERROR([libmudflap must be built with GCC]) +fi +AC_PROG_CPP + +# We use the C++ compiler during testing. +AC_PROG_CXX + +# Some hosts don't have dlsym(RTLD_NEXT, "symbol") for use in +# symbol interposition. We disable shared libraries for these. +AC_MSG_CHECKING([whether dlsym(RTLD_NEXT,...) is available]) +AC_TRY_COMPILE([ +#define _GNU_SOURCE +#include <dlfcn.h> +], +[void *foo = dlsym (RTLD_NEXT, "exit");], +[AC_MSG_RESULT(yes)], +[AC_MSG_RESULT(no) +enable_shared=no]) + +AC_CHECK_HEADERS(stdint.h execinfo.h signal.h dlfcn.h dirent.h pwd.h grp.h \ + netdb.h sys/ipc.h sys/sem.h sys/shm.h sys/wait.h ctype.h mntent.h \ + sys/socket.h netinet/in.h arpa/inet.h dlfcn.h sys/mman.h) + +AC_CHECK_FUNCS(backtrace backtrace_symbols gettimeofday signal) +AC_CHECK_FUNCS(fopen64 fseeko64 ftello64 stat64 freopen64) +AC_CHECK_FUNCS(setbuf setbuffer setlinebuf setvbuf) +AC_CHECK_FUNCS(strnlen memrchr strncpy memmem sethostname) +AC_CHECK_FUNCS(__ctype_b_loc __ctype_tolower_loc __ctype_toupper_loc) +AC_CHECK_FUNCS(getlogin cuserid getpwnam getpwuid getpwent getgrnam getgrgid getgrent) +AC_CHECK_FUNCS(getlogin_r getpwnam_r getpwuid_r getgrnam_r getgrgid_r) +AC_CHECK_FUNCS(getservent getservbyname getservbyport getaddrinfo gai_strerror) +AC_CHECK_FUNCS(getprotoent getprotobyname getprotobynumber) +AC_CHECK_FUNCS(getmntent setmntent addmntent) +AC_CHECK_FUNCS(inet_ntoa mmap munmap) +AC_CHECK_FUNCS(__libc_freeres) + +AC_TRY_COMPILE([#include <sys/types.h> +#include <sys/ipc.h> +#include <sys/sem.h>],[union semun foo;], [mf_have_semun=1], [mf_have_semun=0]) +if test $mf_have_semun = 1 +then + AC_DEFINE(HAVE_UNION_SEMUN, 1, [union semun defined in sys/ipc.h or sys/sem.h]) +fi + + +AC_MSG_CHECKING([for socklen_t in sys/socket.h]) +AC_TRY_COMPILE([#define _POSIX_PII_SOCKET +#include <sys/types.h> +#include <sys/socket.h>], [socklen_t x = 5;], + [AC_DEFINE(HAVE_SOCKLEN_T, 1, [Define it socklen_t typedef is in sys/socket.h.]) + AC_MSG_RESULT(yes)], + [AC_MSG_RESULT(no)]) + +AC_LIBTOOL_DLOPEN +AM_PROG_LIBTOOL +AC_SUBST(enable_shared) +AC_SUBST(enable_static) + +AC_CHECK_HEADER(stdint.h, [MF_HAVE_STDINT_H=1], [MF_HAVE_STDINT_H=0]) +AC_SUBST(MF_HAVE_STDINT_H) +if test $MF_HAVE_STDINT_H = 1 +then + MF_HAVE_UINTPTR_T=1 +else + AC_TRY_COMPILE([#include <sys/types.h>], [uintptr_t k = 0;], + [MF_HAVE_UINTPTR_T=1], [MF_HAVE_UINTPTR_T=0]) +fi +AC_SUBST(MF_HAVE_UINTPTR_T) + +if test ! -d pth +then + # libmudflapth objects are built in this subdirectory + mkdir pth +fi + +AC_CHECK_HEADERS(pthread.h) + +AC_MSG_CHECKING([for thread model used by GCC]) +target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` +AC_MSG_RESULT([$target_thread_file]) + +# We only support posix threads, or no threads at all. +posix_threads= +case ${target_thread_file} in + posix) + posix_threads=yes + ;; + single) + ;; + *) + echo "${target_thread_file} is an unsupported thread package" 1>&2 + exit 1 + ;; +esac + +AM_CONDITIONAL(LIBMUDFLAPTH, [test "x$posix_threads" != "x"]) +if test "x$posix_threads" != "x" +then + build_libmudflapth=1 +else + build_libmudflapth=0 +fi +AC_SUBST(build_libmudflapth) + +AC_CHECK_LIB(dl, dlsym) + +# Calculate toolexeclibdir +# Also toolexecdir, though it's only used in toolexeclibdir +case ${version_specific_libs} in + yes) + # Need the gcc compiler version to know where to install libraries + # and header files if --enable-version-specific-runtime-libs option + # is selected. + toolexecdir='$(libdir)/gcc/$(target_alias)' + toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' + ;; + no) + if test -n "$with_cross_host" && + test x"$with_cross_host" != x"no"; then + # Install a library built with a cross compiler in tooldir, not libdir. + toolexecdir='$(exec_prefix)/$(target_alias)' + toolexeclibdir='$(toolexecdir)/lib' + else + toolexecdir='$(libdir)/gcc-lib/$(target_alias)' + toolexeclibdir='$(libdir)' + fi + multi_os_directory=`$CC -print-multi-os-directory` + case $multi_os_directory in + .) ;; # Avoid trailing /. + *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; + esac + ;; +esac +AC_SUBST(toolexecdir) +AC_SUBST(toolexeclibdir) + +includedir=${toolexecdir}/include +AC_SUBST(includedir) + +pthread_create_version='""' +if test "x$enable_shared" = "xyes" && test "x$posix_threads" != "x"; then + # NB: don't check for -lpthread here, because then it would be + # added to LIBS. For the thread-unaware libmudflap.la, we don't + # want it there. + + # glibc-related hacks. dlsym() may pick the wrong version of + # interposed functions like pthread_create on modern glibc. + # We need to find the proper symbol version string, and use + # the nonstandard dlvsym(). + AC_CHECK_FUNCS(dlvsym) + AC_CHECK_TOOL(NM, nm) + if test "x$ac_cv_have_dlvsym" != "x"; then + # Try compiling a simple pthreads program. Find the shared libraries it + # ends up with. Then use "nm" on those libraries to extract the + # default symbol versioning suffix ("@@"), if any. But that's tricky. + # Rather, run nm on the resulting executable. Unfortunately, autoconf + # doesn't appear to have a macro that builds a test executable for + # subsequent analysis ... so we do it by hand here. + cat >> conftest.c << EOF +#include <pthread.h> +int main () { void *p = (void *) & pthread_create; return (int) p; } +EOF + oldLIBS="$LIBS" + LIBS="$LIBS -lpthread" + pthread_create_version="\"\"" + AC_MSG_CHECKING(pthread_create symbol version) + if eval $ac_link 2>&5 && test -s conftest${ac_exeext}; then + version=`$NM conftest${ac_exeect} | grep 'pthread_create@@' | sed -e 's/^.*@@//'` + if test "x$version" != "x"; then + pthread_create_version="\"$version\"" + fi + fi + AC_MSG_RESULT($pthread_create_version) + LIBS="$oldLIBS" + fi +fi +AC_DEFINE_UNQUOTED(PTHREAD_CREATE_VERSION, $pthread_create_version, [pthread_create symbol version]) + + +# Figure out whether the compiler supports "-ffunction-sections -fdata-sections", +# similarly to how libstdc++ does it +ac_test_CFLAGS="${CFLAGS+set}" +ac_save_CFLAGS="$CFLAGS" + +# Check for -ffunction-sections -fdata-sections +AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections]) +CFLAGS='-Werror -ffunction-sections -fdata-sections' +AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no]) +if test "$ac_test_CFLAGS" = set; then + CFLAGS="$ac_save_CFLAGS" +else + # this is the suspicious part + CFLAGS="" +fi +if test x"$ac_fdsections" = x"yes"; then + SECTION_FLAGS='-ffunction-sections -fdata-sections' +fi +AC_MSG_RESULT($ac_fdsections) +AC_SUBST(SECTION_FLAGS) + + +# Check for the name of the symbol used for the entry point. +AC_CACHE_CHECK([for the name of the symbol used for the entry point], + [mudflap_cv_entry_point], [ +for name in _start __start unknown; do + AC_LINK_IFELSE([AC_LANG_PROGRAM([extern char $name@<:@@:>@;], [$name@<:@0@:>@ = 0;])], + [break]) +done +mudflap_cv_entry_point="$name"]) +if test "$mudflap_cv_entry_point" = unknown; then + AC_MSG_ERROR([none of the known symbol names works]) +fi +AC_DEFINE_UNQUOTED([ENTRY_POINT], [$mudflap_cv_entry_point], + [Define to the name of the symbol used for the entry point.]) + + +if test ${multilib} = yes; then + multilib_arg="--enable-multilib" +else + multilib_arg= +fi + +# See if we support thread-local storage. +GCC_CHECK_TLS +GCC_CHECK_EMUTLS + +AC_CONFIG_FILES([Makefile testsuite/Makefile testsuite/mfconfig.exp]) +AC_OUTPUT |