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toolchain/external: ensure gcc version is known

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Currently, when a preconfigured prebuilt toolchain forgets to specify
its gcc version, the error message is a bit misleading, like:

    Incorrect selection of gcc version: expected .x, got 4.9.2

Add a an explicit check for the gcc version being set, that reports a
better error message.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN
2015-08-13 14:13:23 +02:00
committed by Thomas Petazzoni
parent ab2a9598fe
commit 23fde76859
1 changed files with 4 additions and 0 deletions
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4
toolchain/helpers.mk
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@@ -193,6 +193,10 @@ check_kernel_headers_version = \
#
check_gcc_version = \
expected_version="$(strip $2)" ; \
if [ -z "$${expected_version}" ]; then \
printf "Internal error, gcc version unknown (no GCC_AT_LEAST_X_Y selected)\n"; \
exit 1 ; \
fi; \
real_version=`$(1) --version | sed -r -e '1!d; s/^[^)]+\) ([^[:space:]]+).*/\1/;'` ; \
if [[ ! "$${real_version}" =~ ^$${expected_version}\. ]] ; then \
printf "Incorrect selection of gcc version: expected %s.x, got %s\n" \