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package/gcc: map debug prefix when reproducible

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When building with BR2_REPRODUCIBLE the toolchain wrapper passes
-fdebug-prefix-map for all packages that are built.  But this doesn't
affect the target libraries (like libgcc) built by GCC's build system.

GCC 4.3 added a configure option to set the debug prefix map for these
libraries, which is used here to avoid encoding potentially
non-reproducible build paths into the debug data.

Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
John Keeping 2023-02-07 19:58:10 +00:00 committed by Yann E. MORIN
parent 90ab065162
commit f9a92ea1cb
1 changed files with 4 additions and 0 deletions
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package/gcc/gcc.mk
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@ -84,6 +84,10 @@ HOST_GCC_COMMON_CONF_OPTS = \
--with-bugurl="http://bugs.buildroot.net/" \
--without-zstd
ifeq ($(BR2_REPRODUCIBLE),y)
HOST_GCC_COMMON_CONF_OPTS += --with-debug-prefix-map=$(BASE_DIR)=buildroot
endif
# Don't build documentation. It takes up extra space / build time,
# and sometimes needs specific makeinfo versions to work
HOST_GCC_COMMON_CONF_ENV = \