[Bug ada/65477] New: gnat is built with nodlopen

[Bug ada/65477] New: gnat is built with nodlopen

[pavel at zhukoff dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65477

            Bug ID: 65477
           Summary: gnat is built with nodlopen
           Product: gcc
           Version: 4.9.3
            Status: UNCONFIRMED
          Severity: trivial
          Priority: P3
         Component: ada
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pavel at zhukoff dot net

Created attachment 35068
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35068&action=edit
test program

It's not possible to write shared plugins in ada because libgnat (and only
libgnat from gcc) is built with nodlopen option.

Example:
Error: unable to load plugin "~/.weechat/plugins/liblibaweeplug.so":
libgnat-4.9.so: shared object cannot be dlopen()ed

How to reproduce:
Try to dlopen libgnat.so. dlopen returns NULL works fine for libc/libm/etc

[Bug ada/65477] gnat is built with nodlopen

[pavel at zhukoff dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65477

--- Comment #1 from Pavel Zhukov <pavel at zhukoff dot net> ---
This patch works for me:
Build:
http://koji.fedoraproject.org/koji/taskinfo?taskID=9275707

Patch:
diff --git a/gcc/ada/gcc-interface/Makefile.in
b/gcc/ada/gcc-interface/Makefile.in
index b552d3d..69d55aa 100644
--- a/gcc/ada/gcc-interface/Makefile.in
+++ b/gcc/ada/gcc-interface/Makefile.in
@@ -2818,14 +2818,14 @@ gnatlib-shared-default:
              gnatlib
        $(RM) $(RTSDIR)/libgna*$(soext)
        cd $(RTSDIR); `echo "$(GCC_FOR_TARGET)" \
-                | sed -e 's,\./xgcc,../../xgcc,' -e 's,-B\./,-B../../,'`
-shared -Wl,-z,nodlopen $(GNATLIBCFLAGS) \
+                | sed -e 's,\./xgcc,../../xgcc,' -e 's,-B\./,-B../../,'`
-shared -Wl,-z $(GNATLIBCFLAGS) \
                $(PICFLAG_FOR_TARGET) \
                -o libgnat$(hyphen)$(LIBRARY_VERSION)$(soext) \
                $(GNATRTL_NONTASKING_OBJS) $(LIBGNAT_OBJS) \
                $(SO_OPTS)libgnat$(hyphen)$(LIBRARY_VERSION)$(soext) \
                $(MISCLIB) -lm
        cd $(RTSDIR); `echo "$(GCC_FOR_TARGET)" \
-                | sed -e 's,\./xgcc,../../xgcc,' -e 's,-B\./,-B../../,'`
-shared -Wl,-z,nodlopen $(GNATLIBCFLAGS) \
+                | sed -e 's,\./xgcc,../../xgcc,' -e 's,-B\./,-B../../,'`
-shared -Wl,-z $(GNATLIBCFLAGS) \
                $(PICFLAG_FOR_TARGET) \
                -o libgnarl$(hyphen)$(LIBRARY_VERSION)$(soext) \
                $(GNATRTL_TASKING_OBJS) \

[Bug ada/65477] gnat is built with nodlopen

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65477

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ebotcazou at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Please double-check that you're reporting issues for the pristine codebase.