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Add check for which library is needed for dlopen. 

gold/
	PR gold/16203
	* configure.ac: Add check for which library is needed for
	dlopen.
	* configure: Regenerate.
This commit is contained in:
Cary Coutant 2013-11-22 15:46:51 -08:00
parent 0c075858c7
commit 6632e8ccec
3 changed files with 74 additions and 5 deletions
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6
gold/ChangeLog
View File

@ -1,3 +1,9 @@
2013-11-22 Cary Coutant <ccoutant@google.com>
* configure.ac: Add check for which library is needed for
dlopen.
* configure: Regenerate.
2013-11-22 Cary Coutant <ccoutant@google.com>
* testsuite/Makefile.am (exception_x86_64_bnd_test): Use in-tree

64
gold/configure vendored
View File

@ -7193,13 +7193,71 @@ if test "x$ac_cv_header_dlfcn_h" = x""yes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_DLFCN_H 1
_ACEOF
DLOPEN_LIBS="-ldl"
else
DLOPEN_LIBS=""
fi
done
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing dlopen" >&5
$as_echo_n "checking for library containing dlopen... " >&6; }
if test "${ac_cv_search_dlopen+set}" = set; then :
$as_echo_n "(cached) " >&6
else
ac_func_search_save_LIBS=$LIBS
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char dlopen ();
int
main ()
{
return dlopen ();
;
return 0;
}
_ACEOF
for ac_lib in '' dl dld; do
if test -z "$ac_lib"; then
ac_res="none required"
else
ac_res=-l$ac_lib
LIBS="-l$ac_lib $ac_func_search_save_LIBS"
fi
if ac_fn_cxx_try_link "$LINENO"; then :
ac_cv_search_dlopen=$ac_res
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext
if test "${ac_cv_search_dlopen+set}" = set; then :
break
fi
done
if test "${ac_cv_search_dlopen+set}" = set; then :
else
ac_cv_search_dlopen=no
fi
rm conftest.$ac_ext
LIBS=$ac_func_search_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dlopen" >&5
$as_echo "$ac_cv_search_dlopen" >&6; }
ac_res=$ac_cv_search_dlopen
if test "$ac_res" != no; then :
test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
fi
case "$ac_cv_search_dlopen" in
no*) DLOPEN_LIBS="";;
*) DLOPEN_LIBS="$ac_cv_search_dlopen";;
esac
for ac_func in mallinfo posix_fallocate fallocate readv sysconf times

9
gold/configure.ac
View File

@ -528,9 +528,14 @@ AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
AC_CHECK_HEADERS(byteswap.h)
dnl When plugins enabled dynamic loader interface is required. Check headers
dnl which may provide this interface. In case of dlfcn.h add libdl to link.
dnl which may provide this interface. Add the necessary library to link.
AC_CHECK_HEADERS(windows.h)
AC_CHECK_HEADERS(dlfcn.h, [DLOPEN_LIBS="-ldl"], [DLOPEN_LIBS=""])
AC_CHECK_HEADERS(dlfcn.h)
AC_SEARCH_LIBS(dlopen, [dl dld])
case "$ac_cv_search_dlopen" in
no*) DLOPEN_LIBS="";;
*) DLOPEN_LIBS="$ac_cv_search_dlopen";;
esac
AC_SUBST(DLOPEN_LIBS)
AC_CHECK_FUNCS(mallinfo posix_fallocate fallocate readv sysconf times)