* gthr-gnat.c, gthr-gnat.h, gthr.h, libgcc2.h, unwind-dw2-fde.h

	* unwind.h: Surround all visibility pragmas with #ifndef HIDE_EXPORTS.

	* mklibgcc.in: Drastic restructure for comprehensibility.
	Remove the old hidden-directive hack.
	Eliminate support for .txt files in LIB2ADD etc (never used).
	Eliminate support for assembly source files in LIB2ADDEH* and
	LIBUNWIND (also never used).
	Build up dependency lists for libraries incrementally.
	If we have SHLIB_LINK, compile each file twice, once for the
	static and once for the shared library; also probe for
	-fvisibility=hidden in the generated libgcc.mk.  If found,
	pass that and -DHIDE_EXPORTS to the compilation of every C
	source file going into the static library.  If found, generate
	hidden-directive lists for every assembly source file going
	into the static library, but incorporate them with -include
	instead of ld -r.
	Write comments into generated libgcc.mk to facilitate debugging.
	* Makefile.in: Pass ASM_HIDDEN_OP to mklibgcc.
	* config/t-slibgcc-darwin: Define ASM_HIDDEN_OP.

	* config/darwin.h (REAL_LIBGCC_SPEC): Put -lgcc back in
	-Zdynamiclib case.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@91513 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 0 deletions

diff --git a/gcc/unwind.h b/gcc/unwind.h
index ca917b0ad2c..7244fd457c7 100644
--- a/gcc/unwind.h
+++ b/gcc/unwind.h
@@ -31,7 +31,9 @@
 #ifndef _UNWIND_H
 #define _UNWIND_H
 
+#ifndef HIDE_EXPORTS
 #pragma GCC visibility push(default)
+#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -231,6 +233,8 @@ extern void * _Unwind_FindEnclosingFunction (void *pc);
 }
 #endif
 
+#ifndef HIDE_EXPORTS
 #pragma GCC visibility pop
+#endif
 
 #endif /* unwind.h */