54 lines
1016 B
Plaintext
54 lines
1016 B
Plaintext
|
#!/bin/sh
|
||
|
#
|
||
|
# Probe the compiler for vintage, version, etc. This is used for setting
|
||
|
# optional make knobs under the DEVELOPER knob.
|
||
|
|
||
|
CC="$*"
|
||
|
|
||
|
# we get something like (this is at least true for gcc and clang)
|
||
|
#
|
||
|
# FreeBSD clang version 3.4.1 (tags/RELEASE...)
|
||
|
get_version_line() {
|
||
|
$CC -v 2>&1 | grep ' version '
|
||
|
}
|
||
|
|
||
|
get_family() {
|
||
|
get_version_line | sed 's/^\(.*\) version [0-9][^ ]* .*/\1/'
|
||
|
}
|
||
|
|
||
|
get_version() {
|
||
|
get_version_line | sed 's/^.* version \([0-9][^ ]*\) .*/\1/'
|
||
|
}
|
||
|
|
||
|
print_flags() {
|
||
|
family=$1
|
||
|
version=$(get_version | cut -f 1 -d .)
|
||
|
|
||
|
# Print a feature flag not only for the current version, but also
|
||
|
# for any prior versions we encompass. This avoids needing to do
|
||
|
# numeric comparisons in make, which are awkward.
|
||
|
while test "$version" -gt 0
|
||
|
do
|
||
|
echo $family$version
|
||
|
version=$((version - 1))
|
||
|
done
|
||
|
}
|
||
|
|
||
|
case "$(get_family)" in
|
||
|
gcc)
|
||
|
print_flags gcc
|
||
|
;;
|
||
|
clang)
|
||
|
print_flags clang
|
||
|
;;
|
||
|
"FreeBSD clang")
|
||
|
print_flags clang
|
||
|
;;
|
||
|
"Apple LLVM")
|
||
|
print_flags clang
|
||
|
;;
|
||
|
*)
|
||
|
: unknown compiler family
|
||
|
;;
|
||
|
esac
|