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kpatch-build: gcc version checks

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Ensure the version of the locally installed gcc matches the one used to
compile the kernel, and is >= 4.8.

Fixes #246.
This commit is contained in:
Josh Poimboeuf 2014-07-01 14:12:07 -05:00
parent df679e3192
commit 73171714bc
1 changed files with 21 additions and 0 deletions
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21
kpatch-build/kpatch-build
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@ -102,6 +102,25 @@ find_dirs() {
return 1
}
gcc_version_check() {
# ensure gcc version matches that used to build the kernel
local gccver=$(gcc --version |head -n1 |cut -d' ' -f3-)
local kgccver=$(strings $VMLINUX |grep "GCC:" |cut -d' ' -f3-)
if [[ $gccver != $kgccver ]]; then
warn "gcc/kernel version mismatch"
return 1
fi
# ensure gcc version is >= 4.8
gccver=$(echo $gccver |cut -d'.' -f1,2)
if [[ $gccver < 4.8 ]]; then
warn "gcc >= 4.8 required"
return 1
fi
return
}
find_parent_obj() {
dir=$(dirname $1)
file=$(basename $1)
@ -260,6 +279,8 @@ elif [[ $DISTRO = ubuntu ]]; then
export PATH=/usr/lib/ccache:$PATH
fi
gcc_version_check || die
if [[ -n "$USERSRCDIR" ]]; then
echo "Using source directory at $USERSRCDIR"
SRCDIR="$USERSRCDIR"