Make shared libraries resolve global symbols within themselves first.

Currently only on GNUish linkers...
Submitted by Steven Bade <sbade@austin.ibm.com>

diff --git a/Makefile.org b/Makefile.org
index 81d2a5eb9c5e53e664f2f5adebc7716509b478a9..736a178772522e6e0fd72ddb95b7dcd86e7054f8 100644 (file)
--- a/Makefile.org
+++ b/Makefile.org
@@ -266,6 +266,7 @@ do_gnu-shared:
        ( set -x; ${CC} ${SHARED_LDFLAGS} \
                -shared -o lib$$i.so.${SHLIB_MAJOR}.${SHLIB_MINOR} \
                -Wl,-soname=lib$$i.so.${SHLIB_MAJOR}.${SHLIB_MINOR} \
+               -Wl,-Bsymbolic \
                -Wl,--whole-archive lib$$i.a \
                -Wl,--no-whole-archive $$libs ${EX_LIBS} -lc ) || exit 1; \
        libs="$$libs -l$$i"; \
@@ -292,6 +293,7 @@ do_darwin-shared:
 do_cygwin-shared:
        libs='-L. ${SHLIBDEPS}'; for i in ${SHLIBDIRS}; do \
        ( set -x; ${CC}  -shared -o cyg$$i.dll \
+               -Wl,-Bsymbolic \
                -Wl,--whole-archive lib$$i.a \
                -Wl,--out-implib,lib$$i.dll.a \
                -Wl,--no-whole-archive $$libs ) || exit 1; \