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kbuild: improve scripts/gcc-version.sh output a bit when called without args

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Currently, if you call scripts/gcc-version.sh without arguments it will
generate this output :

$ sh scripts/gcc-version.sh
scripts/gcc-version.sh: line 12: [: =: unary operator expected
scripts/gcc-version.sh: line 16: -E: command not found
scripts/gcc-version.sh: line 17: -E: command not found
0000

Not too pretty. I believe this is an improvement :

$ sh scripts/gcc-version.sh
Error: No compiler specified.
Usage:
        scripts/gcc-version.sh <gcc-command>

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Jesper Juhl 2007-08-04 20:30:42 +02:00 committed by Sam Ravnborg
parent c34114f4ac
commit de47062a17
1 changed files with 7 additions and 1 deletions
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8
scripts/gcc-version.sh
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@ -9,10 +9,16 @@
# gcc-2.95.3, `030301' for gcc-3.3.1, etc.
#
if [ $1 = "-p" ] ; then with_patchlevel=1; shift; fi
if [[ $1 = "-p" ]] ; then with_patchlevel=1; shift; fi
compiler="$*"
if [ ${#compiler} -eq 0 ]; then
echo "Error: No compiler specified."
echo -e "Usage:\n\t$0 <gcc-command>"
exit 1
fi
MAJOR=$(echo __GNUC__ | $compiler -E -xc - | tail -n 1)
MINOR=$(echo __GNUC_MINOR__ | $compiler -E -xc - | tail -n 1)
if [ "x$with_patchlevel" != "x" ] ; then