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Diffstat (limited to 'mcon/U/d_regparm.U')
| -rw-r--r-- | mcon/U/d_regparm.U | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/mcon/U/d_regparm.U b/mcon/U/d_regparm.U new file mode 100644 index 0000000..f1d03a5 --- /dev/null +++ b/mcon/U/d_regparm.U @@ -0,0 +1,48 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 2006, Christian Biere +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?MAKE:d_regparm: Myread Setvar cat rm cc ccflags ldflags gccversion +?MAKE: -pick add $@ %< +?S:d_regparm: +?S: This variable conditionally defines the HAS_REGPARM symbol, which +?S: indicates to the C program that attribute regparm is available. +?S:. +?C:HAS_REGPARM: +?C: This symbol is defined when __attribute__((__regparm__(n))) can be used. +?C:. +?H:#$d_regparm HAS_REGPARM +?H:. +?LINT:set d_regparm +: check whether '__attribute__((__regparm__(n)))' can be used +val="$undef" +if [ "x$gccversion" != x ] +then + $cat >try.c <<'EOC' +static __attribute__((__regparm__(1))) int +blah(int x) +{ + return x / 2; +} +int main(int argc, char *argv[]) +{ + (void) argv; + return blah(argc); +} +EOC + if $cc $ccflags -Werror $ldflags -o try try.c >/dev/null 2>&1 + then + val="$define" + fi + $rm -rf try try.* +fi + +set d_regparm +eval $setvar + |