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kbuild: New 'cc-fullversion' macro 

Prints a six-digit string including the GCC patchlevel.  Also fix
the 'usage' comment for cc-version.

Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Segher Boessenkool 2007-05-19 18:49:07 +02:00 committed by Sam Ravnborg
parent f241182b51
commit 0ab2a272e6
2 changed files with 18 additions and 4 deletions
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7
scripts/Kbuild.include
View File

@ -100,9 +100,14 @@ cc-option-align = $(subst -functions=0,,\
$(call cc-option,-falign-functions=0,-malign-functions=0))
# cc-version
# Usage gcc-ver := $(call cc-version,$(CC))
# Usage gcc-ver := $(call cc-version)
cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
# cc-fullversion
# Usage gcc-ver := $(call cc-fullversion)
cc-fullversion = $(shell $(CONFIG_SHELL) \
$(srctree)/scripts/gcc-version.sh -p $(CC))
# cc-ifversion
# Usage: EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)
cc-ifversion = $(shell [ $(call cc-version, $(CC)) $(1) $(2) ] && echo $(3))

15
scripts/gcc-version.sh
View File

@ -1,14 +1,23 @@
#!/bin/sh
#
# gcc-version gcc-command
# gcc-version [-p] gcc-command
#
# Prints the gcc version of `gcc-command' in a canonical 4-digit form
# such as `0295' for gcc-2.95, `0303' for gcc-3.3, etc.
#
# With the -p option, prints the patchlevel as well, for example `029503' for
# gcc-2.95.3, `030301' for gcc-3.3.1, etc.
#
if [ $1 = "-p" ] ; then with_patchlevel=1; shift; fi
compiler="$*"
MAJOR=$(echo __GNUC__ | $compiler -E -xc - | tail -n 1)
MINOR=$(echo __GNUC_MINOR__ | $compiler -E -xc - | tail -n 1)
printf "%02d%02d\\n" $MAJOR $MINOR
if [ "x$with_patchlevel" != "x" ] ; then
PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -xc - | tail -n 1)
printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
else
printf "%02d%02d\\n" $MAJOR $MINOR
fi