[oe-commits] [openembedded-core] 02/08: newlib: export CC_FOR_TARGET as CC
git at git.openembedded.org
git at git.openembedded.org
Wed Jun 5 23:40:33 UTC 2019
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rpurdie pushed a commit to branch master
in repository openembedded-core.
commit d00b32f4f961ceeb75e7a014209666c10cf3eb93
Author: Alejandro Hernandez Samaniego <aehs29 at gmail.com>
AuthorDate: Tue Jun 4 10:57:58 2019 -0700
newlib: export CC_FOR_TARGET as CC
Newlibs Makefiles use a variable CC_FOR_TARGET to build
libraries for the TARGET machine (as opposed to
CC_FOR_BUILD).
We pass CC on our compile function, which is normally
use to build, although in this case, the configure
script is trimming CC and using simply gcc for the target
machine, basically taking out the TUNE variables we pass
in CC as well, such as march, mfloat-abi and such.
This causes errors when building applications since
CC will try to use hard floating point for example
whereas the libc.a from newlib will contain libraries
built with the defaults which could be soft floating
point for example.
e.g.:
$ ${CC} test.c
real-ld: error: test.out uses VFP register arguments,
/usr/lib/libg.a(lib_a-stdio.o) does not.
Analizing the object files we can see that one of them
uses soft (library) and the other one uses hard
floating point (program):
$ readelf -A test.out | grep VFP
Tag_ABI_VFP_args: VFP registers
$ readelf -A usr/lib/libc.a | grep VFP
Hence why the linker complains.
Pass CC_FOR_TARGET with the contents of CC to override
the trimming from the configure script and build newlib
with the correct tune.
Signed-off-by: Alejandro Enedino Hernandez Samaniego <aehs29 at gmail.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
meta/recipes-core/newlib/newlib_3.1.0.bb | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/meta/recipes-core/newlib/newlib_3.1.0.bb b/meta/recipes-core/newlib/newlib_3.1.0.bb
index db13724..7ab5b2b 100644
--- a/meta/recipes-core/newlib/newlib_3.1.0.bb
+++ b/meta/recipes-core/newlib/newlib_3.1.0.bb
@@ -3,7 +3,8 @@ require newlib.inc
PROVIDES += "virtual/libc virtual/libiconv virtual/libintl"
do_configure() {
- ${S}/configure ${EXTRA_OECONF}
+ export CC_FOR_TARGET="${CC}"
+ ${S}/configure ${EXTRA_OECONF}
}
do_install_append() {
--
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