[oe-commits] [openembedded-core] 03/25: gcc-target.inc: Prevent sysroot from leaking into configargs.h

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rpurdie pushed a commit to branch master-next
in repository openembedded-core.

commit b8d6e2ab68ee5e341fe970b191bfd334e6d2c40b
Author: Nathan Rossi <nathan at nathanrossi.com>
AuthorDate: Sat Nov 30 10:47:24 2019 +0000

    gcc-target.inc: Prevent sysroot from leaking into configargs.h
    
    Prevent the full recipe-sysroot path from leaking into configargs.h. The
    configargs.h header is intended to be static and unchanged as the
    content is used as a means of determining that a gcc plugin is built for
    the same gcc. This also effects the output of 'gcc -v'. Due to per
    recipe sysroots and staging, the sysroot path would be replaced with the
    sysroot local to the recipe thus changing the content of configargs.h.
    This change also improves gcc binary reproducibility. The sysroot path
    is replaced with the base target root "/".
    
    Signed-off-by: Nathan Rossi <nathan at nathanrossi.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 meta/recipes-devtools/gcc/gcc-target.inc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/meta/recipes-devtools/gcc/gcc-target.inc b/meta/recipes-devtools/gcc/gcc-target.inc
index bdc6ff6..987e88d 100644
--- a/meta/recipes-devtools/gcc/gcc-target.inc
+++ b/meta/recipes-devtools/gcc/gcc-target.inc
@@ -137,6 +137,14 @@ FILES_${PN}-doc = "\
 "
 
 do_compile () {
+	# Prevent full target sysroot path from being used in configargs.h header,
+	# as it will be rewritten when used by other sysroots preventing support
+	# for gcc plugins. Additionally the path is embeddeded into the output
+	# binary, this prevents building a reproducible binary.
+	oe_runmake configure-gcc
+	sed -i 's@${STAGING_DIR_TARGET}@/@g' ${B}/gcc/configargs.h
+	sed -i 's@${STAGING_DIR_HOST}@/@g' ${B}/gcc/configargs.h
+
 	oe_runmake all-host
 }
 

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