[oe-commits] [openembedded-core] 04/34: gcc: Use libssp_nonshared linker specs only for ppc/musl

Mon Dec 11 22:03:23 UTC 2017

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rpurdie pushed a commit to branch pyro
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commit ac2aad028daca6ea3aa0c0ccea8d528e896f8349
Author: Florin Sarbu <samentu1 at gmail.com>
AuthorDate: Mon Nov 13 21:00:11 2017 +0200

    gcc: Use libssp_nonshared linker specs only for ppc/musl
    
    Link libssp_nonshared.a only for ppc/musl because glibc already
    provides the content for libssp_nonshared in libc_nonshared.a and
    therefore we dont need to make it universal.
    
    (From OE-Core rev: c08247e3c7c004a40281d4010186a9ace86e0e47)
    
    Signed-off-by: Florin Sarbu <florin at resin.io>
    Signed-off-by: Armin Kuster <akuster at mvista.com>
---
 meta/recipes-devtools/gcc/gcc-6.3.inc              |  2 +-
 ...shared-to-link-commandline-for-musl-targe.patch | 87 ++++++++++++++++++++++
 .../gcc/gcc-6.3/0041-ssp_nonshared.patch           | 28 -------
 3 files changed, 88 insertions(+), 29 deletions(-)

diff --git a/meta/recipes-devtools/gcc/gcc-6.3.inc b/meta/recipes-devtools/gcc/gcc-6.3.inc
index d74f12c..5c81a33 100644
--- a/meta/recipes-devtools/gcc/gcc-6.3.inc
+++ b/meta/recipes-devtools/gcc/gcc-6.3.inc
@@ -71,7 +71,7 @@ SRC_URI = "\
            file://0038-Search-target-sysroot-gcc-version-specific-dirs-with.patch \
            file://0039-Fix-various-_FOR_BUILD-and-related-variables.patch \
            file://0040-nios2-Define-MUSL_DYNAMIC_LINKER.patch \
-           file://0041-ssp_nonshared.patch \
+           file://0041-Add-ssp_nonshared-to-link-commandline-for-musl-targe.patch \
            file://0042-gcc-libcpp-support-ffile-prefix-map-old-new.patch \
            file://0043-Reuse-fdebug-prefix-map-to-replace-ffile-prefix-map.patch \
            file://0044-gcc-final.c-fdebug-prefix-map-support-to-remap-sourc.patch \
diff --git a/meta/recipes-devtools/gcc/gcc-6.3/0041-Add-ssp_nonshared-to-link-commandline-for-musl-targe.patch b/meta/recipes-devtools/gcc/gcc-6.3/0041-Add-ssp_nonshared-to-link-commandline-for-musl-targe.patch
new file mode 100644
index 0000000..29b7ce7
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-6.3/0041-Add-ssp_nonshared-to-link-commandline-for-musl-targe.patch
@@ -0,0 +1,87 @@
+From 210f6b3b82084cc756e02b8bc12f909a43b14ee8 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem at 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 at gmail.com>
+---
+ gcc/config/linux.h          |  7 +++++++
+ gcc/config/rs6000/linux.h   | 10 ++++++++++
+ gcc/config/rs6000/linux64.h | 10 ++++++++++
+ 3 files changed, 27 insertions(+)
+
+diff --git a/gcc/config/linux.h b/gcc/config/linux.h
+index 2e683d0c430..1b4df798671 100644
+--- a/gcc/config/linux.h
++++ b/gcc/config/linux.h
+@@ -182,6 +182,13 @@ 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
++#undef LINK_SSP_SPEC
++#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 */
+diff --git a/gcc/config/rs6000/linux.h b/gcc/config/rs6000/linux.h
+index 684afd6c190..22cfa391b89 100644
+--- a/gcc/config/rs6000/linux.h
++++ b/gcc/config/rs6000/linux.h
+@@ -91,6 +91,16 @@
+ 					 " -m elf32ppclinux")
+ #endif
+ 
++/* link libssp_nonshared.a with musl */
++#if DEFAULT_LIBC == LIBC_MUSL
++#ifdef TARGET_LIBC_PROVIDES_SSP
++#undef LINK_SSP_SPEC
++#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
++		       "|fstack-protector-strong|fstack-protector-explicit" \
++		       ":-lssp_nonshared}"
++#endif
++#endif
++
+ #undef LINK_OS_LINUX_SPEC
+ #define LINK_OS_LINUX_SPEC LINK_OS_LINUX_EMUL " %{!shared: %{!static: \
+   %{rdynamic:-export-dynamic} \
+diff --git a/gcc/config/rs6000/linux64.h b/gcc/config/rs6000/linux64.h
+index 3b00ec0fcf0..8371f8d7b6b 100644
+--- a/gcc/config/rs6000/linux64.h
++++ b/gcc/config/rs6000/linux64.h
+@@ -465,6 +465,16 @@ extern int dot_symbols;
+ 					   " -m elf64ppc")
+ #endif
+ 
++/* link libssp_nonshared.a with musl */
++#if DEFAULT_LIBC == LIBC_MUSL
++#ifdef TARGET_LIBC_PROVIDES_SSP
++#undef LINK_SSP_SPEC
++#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
++		       "|fstack-protector-strong|fstack-protector-explicit" \
++		       ":-lssp_nonshared}"
++#endif
++#endif
++
+ #define LINK_OS_LINUX_SPEC32 LINK_OS_LINUX_EMUL32 " %{!shared: %{!static: \
+   %{rdynamic:-export-dynamic} \
+   -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "}} \
+-- 
+2.13.2
+
diff --git a/meta/recipes-devtools/gcc/gcc-6.3/0041-ssp_nonshared.patch b/meta/recipes-devtools/gcc/gcc-6.3/0041-ssp_nonshared.patch
deleted file mode 100644
index 0744529..0000000
--- a/meta/recipes-devtools/gcc/gcc-6.3/0041-ssp_nonshared.patch
+++ /dev/null
@@ -1,28 +0,0 @@
-From 551a5db7acb56e085a101f1c222d51b2c1b039a4 Mon Sep 17 00:00:00 2001
-From: Szabolcs Nagy <nsz at port70.net>
-Date: Sat, 7 Nov 2015 14:58:40 +0000
-Subject: [PATCH 41/46] ssp_nonshared
-
----
-Upstream-Status: Inappropriate [OE Configuration]
-
- gcc/gcc.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/gcc/gcc.c b/gcc/gcc.c
-index 2812819..9de96ee 100644
---- a/gcc/gcc.c
-+++ b/gcc/gcc.c
-@@ -863,7 +863,8 @@ proper position among the other output files.  */
- #ifndef LINK_SSP_SPEC
- #ifdef TARGET_LIBC_PROVIDES_SSP
- #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
--		       "|fstack-protector-strong|fstack-protector-explicit:}"
-+		       "|fstack-protector-strong|fstack-protector-explicit" \
-+		       ":-lssp_nonshared}"
- #else
- #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
- 		       "|fstack-protector-strong|fstack-protector-explicit" \
--- 
-2.8.2
-

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