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From 75a42d6d0f1f9784327f74882195a5c24843d5a8 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Tue, 27 Jun 2017 18:10:54 -0700
Subject: [PATCH 40/49] Add ssp_nonshared to link commandline for musl targets
when -fstack-protector options are enabled we need to
link with ssp_shared on musl since it does not provide
the __stack_chk_fail_local() so essentially it provides
libssp but not libssp_nonshared something like
TARGET_LIBC_PROVIDES_SSP_BUT_NOT_SSP_NONSHARED
where-as for glibc the needed symbols
are already present in libc_nonshared library therefore
we do not need any library helper on glibc based systems
but musl needs the libssp_noshared from gcc
Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
gcc/config/linux.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/gcc/config/linux.h b/gcc/config/linux.h
index 2e683d0c430..5ff0a2cb2ff 100644
--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
@@ -182,6 +182,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
{ GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
{ 0, 0, 0, 0, 0, 0 } \
}
+#ifdef TARGET_LIBC_PROVIDES_SSP
+#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
+ "|fstack-protector-strong|fstack-protector-explicit" \
+ ":-lssp_nonshared}"
+#endif
+
#endif
#if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
--
2.13.2
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