1877bc9d8f
Make musl provide libssp_nonshared.a and make GCC link it unconditionally if musl is used. This should be a no-op if SSP is disabled and seems to be the only reliable way of dealing with SSP over all packages due to the mess that is linkerflags handling in packages. Signed-off-by: Steven Barth <steven@midlink.org> SVN-Revision: 46108
58 lines
2 KiB
Diff
58 lines
2 KiB
Diff
From 7ec87fbbc3cac99b4173d082dd6195f47c9a32e7 Mon Sep 17 00:00:00 2001
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From: Steven Barth <steven@midlink.org>
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Date: Mon, 22 Jun 2015 11:01:56 +0200
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Subject: [PATCH] Add libssp_nonshared.a so GCC's is not needed
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Signed-off-by: Steven Barth <steven@midlink.org>
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---
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Makefile | 10 ++++++++--
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libssp_nonshared/__stack_chk_fail_local.c | 2 ++
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2 files changed, 10 insertions(+), 2 deletions(-)
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create mode 100644 libssp_nonshared/__stack_chk_fail_local.c
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diff --git a/Makefile b/Makefile
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index 2eb7b30..bfcabf7 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -48,7 +48,7 @@ CRT_LIBS = lib/crt1.o lib/Scrt1.o lib/rcrt1.o lib/crti.o lib/crtn.o
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STATIC_LIBS = lib/libc.a
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SHARED_LIBS = lib/libc.so
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TOOL_LIBS = lib/musl-gcc.specs
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-ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS)
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+ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS) $(EMPTY_LIBS) $(TOOL_LIBS) lib/libssp_nonshared.a
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ALL_TOOLS = tools/musl-gcc
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LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH)$(SUBARCH).so.1
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@@ -103,7 +103,8 @@ NOSSP_SRCS = $(wildcard crt/*.c) \
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src/env/__libc_start_main.c src/env/__init_tls.c \
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src/thread/__set_thread_area.c src/env/__stack_chk_fail.c \
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src/string/memset.c src/string/memcpy.c \
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- src/ldso/dlstart.c src/ldso/dynlink.c
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+ src/ldso/dlstart.c src/ldso/dynlink.c \
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+ libssp_nonshared/__stack_chk_fail_local.c
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$(NOSSP_SRCS:%.c=%.o) $(NOSSP_SRCS:%.c=%.lo): CFLAGS += $(CFLAGS_NOSSP)
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$(CRT_LIBS:lib/%=crt/%): CFLAGS += -DCRT
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@@ -144,6 +145,11 @@ lib/libc.a: $(OBJS)
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$(AR) rc $@ $(OBJS)
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$(RANLIB) $@
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+lib/libssp_nonshared.a: libssp_nonshared/__stack_chk_fail_local.o
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+ rm -f $@
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+ $(AR) rc $@ $<
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+ $(RANLIB) $@
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+
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$(EMPTY_LIBS):
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rm -f $@
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$(AR) rc $@
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diff --git a/libssp_nonshared/__stack_chk_fail_local.c b/libssp_nonshared/__stack_chk_fail_local.c
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new file mode 100644
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index 0000000..2b403a6
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--- /dev/null
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+++ b/libssp_nonshared/__stack_chk_fail_local.c
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@@ -0,0 +1,2 @@
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+extern void __stack_chk_fail(void);
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+void __attribute__((visibility ("hidden"))) __stack_chk_fail_local(void) { __stack_chk_fail(); }
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--
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2.1.4
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