toolchain/musl/patches/200-add_libssp_nonshared.patch

   1 From 7ec87fbbc3cac99b4173d082dd6195f47c9a32e7 Mon Sep 17 00:00:00 2001
   2 From: Steven Barth <steven@midlink.org>
   3 Date: Mon, 22 Jun 2015 11:01:56 +0200
   4 Subject: [PATCH] Add libssp_nonshared.a so GCC's is not needed
   5
   6 Signed-off-by: Steven Barth <steven@midlink.org>
   7
   8 --- a/Makefile
   9 +++ b/Makefile
  10 @@ -66,7 +66,7 @@ CRT_LIBS = $(addprefix lib/,$(notdir $(C
  11  STATIC_LIBS = lib/libc.a
  12  SHARED_LIBS = lib/libc.so
  13  TOOL_LIBS = lib/musl-gcc.specs
  14 -ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
  15 +ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS) lib/libssp_nonshared.a
  16  ALL_TOOLS = obj/musl-gcc
  17
  18  WRAPCC_GCC = gcc
  19 @@ -86,7 +86,7 @@ else
  20
  21  all: $(ALL_LIBS) $(ALL_TOOLS)
  22
  23 -OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(GENH) $(GENH_INT))) obj/include)
  24 +OBJ_DIRS = $(sort $(patsubst %/,%,$(dir $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(GENH) $(GENH_INT))) obj/include obj/libssp_nonshared)
  25
  26  $(ALL_LIBS) $(ALL_TOOLS) $(ALL_OBJS) $(ALL_OBJS:%.o=%.lo) $(GENH) $(GENH_INT): | $(OBJ_DIRS)
  27
  28 @@ -113,6 +113,8 @@ obj/crt/rcrt1.o: $(srcdir)/ldso/dlstart.
  29
  30  obj/crt/Scrt1.o obj/crt/rcrt1.o: CFLAGS_ALL += -fPIC
  31
  32 +obj/libssp_nonshared/__stack_chk_fail_local.o: CFLAGS_ALL += $(CFLAGS_NOSSP)
  33 +
  34  OPTIMIZE_SRCS = $(wildcard $(OPTIMIZE_GLOBS:%=$(srcdir)/src/%))
  35  $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.o) $(OPTIMIZE_SRCS:$(srcdir)/%.c=obj/%.lo): CFLAGS += -O3
  36
  37 @@ -165,6 +167,11 @@ lib/libc.a: $(AOBJS)
  38         $(AR) rc $@ $(AOBJS)
  39         $(RANLIB) $@
  40
  41 +lib/libssp_nonshared.a: obj/libssp_nonshared/__stack_chk_fail_local.o
  42 +       rm -f $@
  43 +       $(AR) rc $@ $<
  44 +       $(RANLIB) $@
  45 +
  46  $(EMPTY_LIBS):
  47         rm -f $@
  48         $(AR) rc $@
  49 --- /dev/null
  50 +++ b/libssp_nonshared/__stack_chk_fail_local.c
  51 @@ -0,0 +1,2 @@
  52 +#include "atomic.h"
  53 +void __attribute__((visibility ("hidden"))) __stack_chk_fail_local(void) { a_crash(); }