From c32c390e13f533ab64e212220af4a4535c693382 Mon Sep 17 00:00:00 2001 From: Romain Naour Date: Wed, 27 Apr 2016 22:15:01 +0200 Subject: [PATCH] toolchain-external: add a check for unsupported toolchains 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 Cc: "Yann E. MORIN" Cc: Arnout Vandecappelle (Essensium/Mind) Cc: Thomas De Schampheleire Signed-off-by: Thomas Petazzoni --- toolchain/helpers.mk | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/toolchain/helpers.mk b/toolchain/helpers.mk index eeac7d2f29..8aaad67988 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 # -- 2.30.2