toolchain/musl/patches/200-add_libssp_nonshared.patch

From 7ec87fbbc3cac99b4173d082dd6195f47c9a32e7 Mon Sep 17 00:00:00 2001
From: Steven Barth <steven@midlink.org>
Date: Mon, 22 Jun 2015 11:01:56 +0200
Subject: [PATCH] Add libssp_nonshared.a so GCC's is not needed

Signed-off-by: Steven Barth <steven@midlink.org>

--- a/Makefile
+++ b/Makefile
@@ -67,7 +67,7 @@ CRT_LIBS = $(addprefix lib/,$(notdir $(C
 STATIC_LIBS = lib/libc.a
 SHARED_LIBS = lib/libc.so
 TOOL_LIBS = lib/musl-gcc.specs
-ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
+ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS) lib/libssp_nonshared.a
 ALL_TOOLS = obj/musl-gcc
 
 WRAPCC_GCC = gcc
@@ -88,7 +88,7 @@ else
 
 all: $(ALL_LIBS) $(ALL_TOOLS)
 
-OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(GENH) $(GENH_INT))) obj/include)
+OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(GENH) $(GENH_INT))) obj/include obj/libssp_nonshared)
 
 $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(ALL_OBJS:%.o=%.lo) $(GENH) $(GENH_INT): | $(OBJ_DIRS)
 
@@ -115,6 +115,8 @@ obj/crt/rcrt1.o: $(srcdir)/ldso/dlstart.
 
 obj/crt/Scrt1.o obj/crt/rcrt1.o: CFLAGS_ALL += -fPIC
 
+obj/libssp_nonshared/__stack_chk_fail_local.o: CFLAGS_ALL += $(CFLAGS_NOSSP)
+
 OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=$(srcdir)/src/%))
 $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.o) $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.lo): CFLAGS += -O3
 
@@ -167,6 +169,11 @@ lib/libc.a: $(AOBJS)
 	$(AR) rc $@ $(AOBJS)
 	$(RANLIB) $@
 
+lib/libssp_nonshared.a: obj/libssp_nonshared/__stack_chk_fail_local.o
+	rm -f $@
+	$(AR) rc $@ $<
+	$(RANLIB) $@
+
 $(EMPTY_LIBS):
 	rm -f $@
 	$(AR) rc $@
--- /dev/null
+++ b/libssp_nonshared/__stack_chk_fail_local.c
@@ -0,0 +1,2 @@
+#include "atomic.h"
+void __attribute__((visibility ("hidden"))) __stack_chk_fail_local(void) { a_crash(); }