[Buildroot] [PATCH v4 1/3] toolchain-external: add a check for unsupported toolchains
Romain Naour
romain.naour at gmail.com
Wed Apr 27 20:15:01 UTC 2016
Some toolchain can't be used by Buildroot due to sysroot location
issue, so the $(ARCH)-linux-gnu-gcc -print-file-name=libc.a command
return only "libc.a"
This lead to an error during the header check version helper,
so these toolchains can't be imported into Buildroot.
cc1: fatal error: $PWD/libc.a/usr/include/linux/version.h: No such file or directory
compilation terminated.
support/scripts/check-kernel-headers.sh: line 38: /tmp/check-headers.4V5PPF: Permission denied
This issue happen with the first linaro 2015.11 [1] release and
CodeSourcery standard edition [2].
Here is the sysroot directory tree for linaro 2015.11:
$ ls libc/arm-linux-gnueabihf
etc lib sbin usr var
Here is the sysroot directory tree for CodeSourcery standard:
$ ls libc/sgxx-glibc
etc lib lib64 sbin usr var
Add a check to error out with an explicit error message
The check don't use toolchain_find_libc_a function directly since
"realpath -f" is used internally and return an absolute path.
[1] https://bugs.linaro.org/show_bug.cgi?id=1995#c7
[2] http://lists.busybox.net/pipermail/buildroot/2014-October/110696.html
Signed-off-by: Romain Naour <romain.naour at gmail.com>
Cc: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
Cc: Thomas De Schampheleire <thomas.de.schampheleire at gmail.com>
---
v4: rebase on master
v3: rename non_existent_sysroot to libc_a_path (ThomasP)
v2: move the check to check_unusable_toolchain helper
use unsupported toolchain instead of broken toolchains (ThomasP)
---
toolchain/helpers.mk | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/toolchain/helpers.mk b/toolchain/helpers.mk
index eeac7d2..8aaad67 100644
--- a/toolchain/helpers.mk
+++ b/toolchain/helpers.mk
@@ -371,6 +371,11 @@ check_unusable_toolchain = \
echo "and contain a lot of pre-built libraries that would conflict with"; \
echo "the ones Buildroot wants to build."; \
exit 1; \
+ fi; \
+ libc_a_path=`$${__CROSS_CC} -print-file-name=libc.a` ; \
+ if test "$${libc_a_path}" = "libc.a" ; then \
+ echo "Unable to detect the toolchain sysroot, Buildroot cannot use this toolchain." ; \
+ exit 1 ; \
fi
#
--
2.5.5
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