diff options
| -rw-r--r-- | MANIFEST | 1 | ||||
| -rw-r--r-- | mcon/U/d_built_memcmp.U | 37 |
2 files changed, 38 insertions, 0 deletions
@@ -171,6 +171,7 @@ mcon/U/d_bcopy.U Do we have bcopy() or memcpy()? mcon/U/d_bindtxtcode.U Do we have bind_textdomain_codeset()? mcon/U/d_brokstat.U Check whether stat() macros are broken mcon/U/d_bsdjmp.U Do we have BSD _setjmp() and _longjmp()? +mcon/U/d_built_memcmp.U Is __builtin_memcmp() available? mcon/U/d_built_popcount.U Is __builtin_popcount() available? mcon/U/d_byacc.U Is byacc available? mcon/U/d_bzero.U Do we have bzero() or memset()? diff --git a/mcon/U/d_built_memcmp.U b/mcon/U/d_built_memcmp.U new file mode 100644 index 0000000..a96a869 --- /dev/null +++ b/mcon/U/d_built_memcmp.U @@ -0,0 +1,37 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 2011, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic Licence, +?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 Licence; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?MAKE:d_built_memcmp: Trylink cat +?MAKE: -pick add $@ %< +?S:d_built_memcmp: +?S: This variable conditionally defines the HAS_BUILTIN_MEMCMP symbol, which +?S: indicates to the C program that __builtin_memcmp is available. +?S:. +?C:HAS_BUILTIN_MEMCMP: +?C: This symbol, if defined, indicates that __builtin_memcmp routine is +?C: available to compare memory buffers. +?C:. +?H:#$d_built_memcmp HAS_BUILTIN_MEMCMP /**/ +?H:. +?LINT:set d_built_memcmp +: check for __builtin_memcmp +$cat >try.c <<EOC +int main(void) +{ + static int ret; + char a[5], b[5]; + ret |= __builtin_memcmp(a, b, 5); + return ret ? 0 : 1; +} +EOC +cyn=__builtin_memcmp +set d_built_memcmp +eval $trylink + |