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Gentoo: https://bugs.gentoo.org/706210, https://bugs.gentoo.org/747346
Alpine Author: Timo Teräs <timo.teras@iki.fi>
Alpine musl package provides libssp_nonshared.a. We link to it unconditionally,
as otherwise we get link failures if some objects are -fstack-protector built
and final link happens with -fno-stack-protector. This seems to be the common
case when bootstrapping gcc, the piepatches do not seem to fully fix the
crosstoolchain and bootstrap sequence wrt. stack-protector flag usage.
This is done by Gentoo and us (Adélie) as well.
--- gcc-6.1.0/gcc/gcc.cc
+++ gcc-6.1.0/gcc/gcc.cc
@@ -988,8 +988,7 @@
#ifndef LINK_SSP_SPEC
#ifdef TARGET_LIBC_PROVIDES_SSP
-#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
- "|fstack-protector-strong|fstack-protector-explicit:}"
+#define LINK_SSP_SPEC "-lssp_nonshared"
#else
#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
"|fstack-protector-strong|fstack-protector-explicit" \
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