diff options
| -rw-r--r-- | config.mk | 6 | ||||
| -rwxr-xr-x | tools/gcc-version.sh | 32 |
2 files changed, 37 insertions, 1 deletions
diff --git a/config.mk b/config.mk index fa33e628513..c239f2315d4 100644 --- a/config.mk +++ b/config.mk @@ -104,7 +104,7 @@ HOSTCFLAGS += -pedantic ######################################################################### # -# Option checker (courtesy linux kernel) to ensure +# Option checker, gcc version (courtesy linux kernel) to ensure # only supported compiler options are used # CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk @@ -125,6 +125,10 @@ cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\ $(if $(call cc-option-sys,$1),$1,$2))) endif +# cc-version +# Usage gcc-ver := $(call cc-version) +cc-version = $(shell $(SHELL) $(SRCTREE)/tools/gcc-version.sh $(CC)) + # # Include the make variables (CC, etc...) # diff --git a/tools/gcc-version.sh b/tools/gcc-version.sh new file mode 100755 index 00000000000..debecb5561c --- /dev/null +++ b/tools/gcc-version.sh @@ -0,0 +1,32 @@ +#!/bin/sh +# +# 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 [ "$1" = "-p" ] ; then + with_patchlevel=1; + shift; +fi + +compiler="$*" + +if [ ${#compiler} -eq 0 ]; then + echo "Error: No compiler specified." + printf "Usage:\n\t$0 <gcc-command>\n" + exit 1 +fi + +MAJOR=$(echo __GNUC__ | $compiler -E -xc - | tail -n 1) +MINOR=$(echo __GNUC_MINOR__ | $compiler -E -xc - | tail -n 1) +if [ "x$with_patchlevel" != "x" ] ; then + 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 |