Hi all,
the attached patch removes the hard-coded requirement for the link
operation with -ldl. On FreeBSD we do not need that, it breaks compilation.
The patch is tested against CentOS7.1
Ok to apply for trunk?
TIA,
Andreas
2015-11-10 Andreas Tobler <andre...@gcc.gnu.org>
* configure.ac: Replace the hard-coded -ldl requirement for
link_sanitizer_common with a configure time check for -ldl.
* configure: Regenerate.
Index: configure.ac
===================================================================
--- configure.ac (revision 230119)
+++ configure.ac (working copy)
@@ -96,7 +96,7 @@
AC_CHECK_FUNCS(clock_getres clock_gettime clock_settime)
# Common libraries that we need to link against for all sanitizer libs.
-link_sanitizer_common='-lpthread -ldl -lm'
+link_sanitizer_common='-lpthread -lm'
# At least for glibc, shm_open is in librt. But don't pull that
# in if it still doesn't give us the function we want. This
@@ -130,6 +130,12 @@
# Other sanitizers do not override clock_* API
])
+# Do a configure time check for -ldl
+AC_CHECK_LIB(dl, dlsym,
+ [link_libasan="-ldl $link_libasan"
+link_libtsan="-ldl $link_libtsan"
+])
+
case "$host" in
*-*-darwin*) MAC_INTERPOSE=true ; enable_static=no ;;
*) MAC_INTERPOSE=false ;;
