Bug 1018375 - part 4 - use a linker script for libnss3 on Linux-like OSes; r=glandium

security/build/Makefile.in

@@ -353,7 +353,22 @@ nss3.def: $(nss_def_files) $(DEPTH)/db/sqlite3/src/sqlite-processed.def
 	echo EXPORTS >> $@.tmp
 	grep -v -h -e ^LIBRARY -e ^EXPORTS -e ^\; $^ >> $@.tmp
 	mv $@.tmp $@
-endif
+else
+ifdef GCC_USE_GNU_LD
+sqlite_def_file := $(topsrcdir)/db/sqlite3/src/sqlite.def
+nspr_def_file := $(srcdir)/nspr-dummy.def
+
+nss3.def: $(nss_def_files) $(sqlite_def_file) $(nspr_def_file)
+	@$(call py_action,convert_def_file, \
+	  $(DEFINES) $(ACDEFINES) $(XULPPFLAGS) -o $@ \
+	  $(addprefix --nss-file=,$(nss_def_files)) \
+	  $(sqlite_def_file) $(nspr_def_file))
+
+GARBAGE += \
+  nss3.def \
+  $(NULL)
+endif # GCC_USE_GNU_LD
+endif # WINNT
 
 ifneq (,$(filter WINNT,$(OS_ARCH)))
 SDK_LIBRARY = $(IMPORT_LIBRARY)

security/build/moz.build

@@ -12,3 +12,8 @@ if CONFIG['MOZ_FOLD_LIBS']:
 
 if CONFIG['OS_TARGET'] == 'WINNT':
     DEFFILE = 'nss3.def'
+
+if CONFIG['OS_ARCH'] == 'Linux' and \
+   CONFIG['MOZ_FOLD_LIBS'] and \
+   CONFIG['GCC_USE_GNU_LD']:
+    LD_VERSION_SCRIPT = 'nss3.def'

security/build/nspr-dummy.def

@@ -0,0 +1,15 @@
+; This Source Code Form is subject to the terms of the Mozilla Public
+; License, v. 2.0. If a copy of the MPL was not distributed with this
+; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;
+; This is a fake .def file, to be used for generating linker scripts
+; for our folded libnss when MOZ_FOLD_LIBS.  NSPR, unlike NSS, exports
+; symbols with symbol visibility (Unix) or __declspec (Windows).  When
+; using a linker script, however, we need to explicitly specify that
+; NSPR's symbols should be globally visible.  Otherwise, NSPR's exported
+; symbols would match the |local: *| rule and be hidden.
+LIBRARY libnsprdummy
+EXPORTS
+PR_* ; Actual .def files don't allow wildcards, of course.
+_PR_*
+PL_*