# Process this file with autoconf to produce a configure script, like so:
|
# Process this file with autoconf to produce a configure script, like so:
|
#
|
#
|
# aclocal -I .. -I ../config && autoconf && autoheader && automake
|
# aclocal -I .. -I ../config && autoconf && autoheader && automake
|
|
|
AC_PREREQ(2.59)
|
AC_PREREQ(2.59)
|
AC_INIT(libssp, 1.0)
|
AC_INIT(libssp, 1.0)
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AC_CONFIG_SRCDIR(ssp.c)
|
AC_CONFIG_SRCDIR(ssp.c)
|
AC_CANONICAL_SYSTEM
|
AC_CANONICAL_SYSTEM
|
ACX_NONCANONICAL_TARGET
|
ACX_NONCANONICAL_TARGET
|
|
|
AM_INIT_AUTOMAKE
|
AM_INIT_AUTOMAKE
|
|
|
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
|
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
|
AC_ARG_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 ],
|
[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
|
[case "$enableval" in
|
[case "$enableval" in
|
yes) version_specific_libs=yes ;;
|
yes) version_specific_libs=yes ;;
|
no) version_specific_libs=no ;;
|
no) version_specific_libs=no ;;
|
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
|
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
|
esac],
|
esac],
|
[version_specific_libs=no])
|
[version_specific_libs=no])
|
AC_MSG_RESULT($version_specific_libs)
|
AC_MSG_RESULT($version_specific_libs)
|
|
|
AM_MAINTAINER_MODE
|
AM_MAINTAINER_MODE
|
|
|
GCC_NO_EXECUTABLES
|
GCC_NO_EXECUTABLES
|
|
|
AM_ENABLE_MULTILIB(, ..)
|
AM_ENABLE_MULTILIB(, ..)
|
|
|
target_alias=${target_alias-$host_alias}
|
target_alias=${target_alias-$host_alias}
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AC_SUBST(target_alias)
|
AC_SUBST(target_alias)
|
|
|
AC_CONFIG_HEADERS(config.h)
|
AC_CONFIG_HEADERS(config.h)
|
|
|
AC_LANG_C
|
AC_LANG_C
|
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
|
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
|
# We must force CC to /not/ be precious variables; otherwise
|
# We must force CC to /not/ be precious variables; otherwise
|
# the wrong, non-multilib-adjusted value will be used in multilibs.
|
# the wrong, non-multilib-adjusted value will be used in multilibs.
|
# As a side effect, we have to subst CFLAGS ourselves.
|
# As a side effect, we have to subst CFLAGS ourselves.
|
|
|
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
|
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
|
m4_define([_AC_ARG_VAR_PRECIOUS],[])
|
m4_define([_AC_ARG_VAR_PRECIOUS],[])
|
AC_PROG_CC
|
AC_PROG_CC
|
m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
|
m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
|
|
|
AC_SUBST(CFLAGS)
|
AC_SUBST(CFLAGS)
|
|
|
if test "x$GCC" != "xyes"; then
|
if test "x$GCC" != "xyes"; then
|
AC_MSG_ERROR([libssp must be built with GCC])
|
AC_MSG_ERROR([libssp must be built with GCC])
|
fi
|
fi
|
AC_PROG_CPP
|
AC_PROG_CPP
|
|
|
AC_MSG_CHECKING([whether -fstack-protector works])
|
AC_MSG_CHECKING([whether -fstack-protector works])
|
save_CFLAGS="$CFLAGS"
|
save_CFLAGS="$CFLAGS"
|
CFLAGS="$CFLAGS -fstack-protector -Werror"
|
CFLAGS="$CFLAGS -fstack-protector -Werror"
|
AC_TRY_COMPILE([
|
AC_TRY_COMPILE([
|
void __attribute__((noinline)) bar (char *x)
|
void __attribute__((noinline)) bar (char *x)
|
{
|
{
|
__builtin_memset (x, 0, 64);
|
__builtin_memset (x, 0, 64);
|
}],[char buf[64]; bar (buf);],
|
}],[char buf[64]; bar (buf);],
|
[AC_MSG_RESULT(yes)],
|
[AC_MSG_RESULT(yes)],
|
[AC_MSG_RESULT(no)])
|
[AC_MSG_RESULT(no)])
|
CFLAGS="$save_CFLAGS"
|
CFLAGS="$save_CFLAGS"
|
|
|
AC_MSG_CHECKING([whether hidden visibility is supported])
|
AC_MSG_CHECKING([whether hidden visibility is supported])
|
AC_TRY_COMPILE([
|
AC_TRY_COMPILE([
|
void __attribute__((visibility ("hidden"))) bar (void) {}],,
|
void __attribute__((visibility ("hidden"))) bar (void) {}],,
|
[ssp_hidden=yes],[ssp_hidden=no])
|
[ssp_hidden=yes],[ssp_hidden=no])
|
AC_MSG_RESULT($ssp_hidden)
|
AC_MSG_RESULT($ssp_hidden)
|
if test x$ssp_hidden = xyes; then
|
if test x$ssp_hidden = xyes; then
|
AC_DEFINE([HAVE_HIDDEN_VISIBILITY],[1],[__attribute__((visibility ("hidden"))) supported])
|
AC_DEFINE([HAVE_HIDDEN_VISIBILITY],[1],[__attribute__((visibility ("hidden"))) supported])
|
fi
|
fi
|
|
|
AC_MSG_CHECKING([whether symbol versioning is supported])
|
AC_MSG_CHECKING([whether symbol versioning is supported])
|
cat > conftest.map <
|
cat > conftest.map <
|
FOO_1.0 {
|
FOO_1.0 {
|
global: *foo*; bar; local: *;
|
global: *foo*; bar; local: *;
|
};
|
};
|
EOF
|
EOF
|
save_LDFLAGS="$LDFLAGS"
|
save_LDFLAGS="$LDFLAGS"
|
LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
|
LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
|
if test x$gcc_no_link = xyes; then
|
if test x$gcc_no_link = xyes; then
|
# If we cannot link, we cannot build shared libraries, so do not use
|
# If we cannot link, we cannot build shared libraries, so do not use
|
# symbol versioning.
|
# symbol versioning.
|
ssp_use_symver=no
|
ssp_use_symver=no
|
else
|
else
|
AC_TRY_LINK([int foo;],[],[ssp_use_symver=yes],[ssp_use_symver=no])
|
AC_TRY_LINK([int foo;],[],[ssp_use_symver=yes],[ssp_use_symver=no])
|
fi
|
fi
|
LDFLAGS="$save_LDFLAGS"
|
LDFLAGS="$save_LDFLAGS"
|
AC_MSG_RESULT($ssp_use_symver)
|
AC_MSG_RESULT($ssp_use_symver)
|
AM_CONDITIONAL(LIBSSP_USE_SYMVER, [test "x$ssp_use_symver" = xyes])
|
AM_CONDITIONAL(LIBSSP_USE_SYMVER, [test "x$ssp_use_symver" = xyes])
|
|
|
AC_CHECK_HEADERS(alloca.h paths.h syslog.h string.h unistd.h fcntl.h stdio.h limits.h)
|
AC_CHECK_HEADERS(alloca.h paths.h syslog.h string.h unistd.h fcntl.h stdio.h limits.h)
|
|
|
if test x$gcc_no_link = xyes; then
|
if test x$gcc_no_link = xyes; then
|
# Presume the ISO C functions are available; add target-specific
|
# Presume the ISO C functions are available; add target-specific
|
# configuration here if required.
|
# configuration here if required.
|
AC_DEFINE(HAVE_STRNCPY)
|
AC_DEFINE(HAVE_STRNCPY)
|
AC_DEFINE(HAVE_STRNCAT)
|
AC_DEFINE(HAVE_STRNCAT)
|
else
|
else
|
AC_CHECK_FUNCS(mempcpy strncpy strncat)
|
AC_CHECK_FUNCS(mempcpy strncpy strncat)
|
fi
|
fi
|
|
|
AC_MSG_CHECKING([whether vsnprintf is usable])
|
AC_MSG_CHECKING([whether vsnprintf is usable])
|
AC_RUN_IFELSE(AC_LANG_PROGRAM([
|
AC_RUN_IFELSE(AC_LANG_PROGRAM([
|
#include
|
#include
|
#include
|
#include
|
#include
|
#include
|
int foo (char *buf, size_t n, const char *fmt, ...)
|
int foo (char *buf, size_t n, const char *fmt, ...)
|
{
|
{
|
va_list ap;
|
va_list ap;
|
int ret;
|
int ret;
|
va_start (ap, fmt);
|
va_start (ap, fmt);
|
ret = vsnprintf (buf, n, fmt, ap);
|
ret = vsnprintf (buf, n, fmt, ap);
|
va_end (ap);
|
va_end (ap);
|
return ret;
|
return ret;
|
}],
|
}],
|
[char buf@<:@8@:>@; memset (buf, 'A', sizeof (buf));
|
[char buf@<:@8@:>@; memset (buf, 'A', sizeof (buf));
|
if (foo (buf, 4, ".%s.", "CDEFG") != 7)
|
if (foo (buf, 4, ".%s.", "CDEFG") != 7)
|
return 1;
|
return 1;
|
return memcmp (buf, ".CD\0AAAA", sizeof (buf)) != 0;]),
|
return memcmp (buf, ".CD\0AAAA", sizeof (buf)) != 0;]),
|
[ssp_have_usable_vsnprintf=define],
|
[ssp_have_usable_vsnprintf=define],
|
[ssp_have_usable_vsnprintf=undef],
|
[ssp_have_usable_vsnprintf=undef],
|
[ssp_have_usable_vsnprintf=undef])
|
[ssp_have_usable_vsnprintf=undef])
|
if test "x$ssp_have_usable_vsnprintf" = xdefine; then
|
if test "x$ssp_have_usable_vsnprintf" = xdefine; then
|
AC_MSG_RESULT(yes)
|
AC_MSG_RESULT(yes)
|
AC_DEFINE([HAVE_USABLE_VSNPRINTF],[1],[vsnprintf is present and works])
|
AC_DEFINE([HAVE_USABLE_VSNPRINTF],[1],[vsnprintf is present and works])
|
else
|
else
|
AC_MSG_RESULT(no)
|
AC_MSG_RESULT(no)
|
fi
|
fi
|
AC_SUBST(ssp_have_usable_vsnprintf)
|
AC_SUBST(ssp_have_usable_vsnprintf)
|
|
|
AM_PROG_LIBTOOL
|
AM_PROG_LIBTOOL
|
AC_SUBST(enable_shared)
|
AC_SUBST(enable_shared)
|
AC_SUBST(enable_static)
|
AC_SUBST(enable_static)
|
|
|
# Calculate toolexeclibdir
|
# Calculate toolexeclibdir
|
# Also toolexecdir, though it's only used in toolexeclibdir
|
# Also toolexecdir, though it's only used in toolexeclibdir
|
case ${version_specific_libs} in
|
case ${version_specific_libs} in
|
yes)
|
yes)
|
# Need the gcc compiler version to know where to install libraries
|
# Need the gcc compiler version to know where to install libraries
|
# and header files if --enable-version-specific-runtime-libs option
|
# and header files if --enable-version-specific-runtime-libs option
|
# is selected.
|
# is selected.
|
toolexecdir='$(libdir)/gcc/$(target_alias)'
|
toolexecdir='$(libdir)/gcc/$(target_alias)'
|
toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
|
toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
|
;;
|
;;
|
no)
|
no)
|
if test -n "$with_cross_host" &&
|
if test -n "$with_cross_host" &&
|
test x"$with_cross_host" != x"no"; then
|
test x"$with_cross_host" != x"no"; then
|
# Install a library built with a cross compiler in tooldir, not libdir.
|
# Install a library built with a cross compiler in tooldir, not libdir.
|
toolexecdir='$(exec_prefix)/$(target_alias)'
|
toolexecdir='$(exec_prefix)/$(target_alias)'
|
toolexeclibdir='$(toolexecdir)/lib'
|
toolexeclibdir='$(toolexecdir)/lib'
|
else
|
else
|
toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
|
toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
|
toolexeclibdir='$(libdir)'
|
toolexeclibdir='$(libdir)'
|
fi
|
fi
|
multi_os_directory=`$CC -print-multi-os-directory`
|
multi_os_directory=`$CC -print-multi-os-directory`
|
case $multi_os_directory in
|
case $multi_os_directory in
|
.) ;; # Avoid trailing /.
|
.) ;; # Avoid trailing /.
|
*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
|
*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
|
esac
|
esac
|
;;
|
;;
|
esac
|
esac
|
AC_SUBST(toolexecdir)
|
AC_SUBST(toolexecdir)
|
AC_SUBST(toolexeclibdir)
|
AC_SUBST(toolexeclibdir)
|
|
|
if test ${multilib} = yes; then
|
if test ${multilib} = yes; then
|
multilib_arg="--enable-multilib"
|
multilib_arg="--enable-multilib"
|
else
|
else
|
multilib_arg=
|
multilib_arg=
|
fi
|
fi
|
|
|
AC_CONFIG_FILES([Makefile ssp/ssp.h])
|
AC_CONFIG_FILES([Makefile ssp/ssp.h])
|
AC_OUTPUT
|
AC_OUTPUT
|
|
|
