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Diffstat (limited to 'mcon/U/d_bsdjmp.U')
| -rw-r--r-- | mcon/U/d_bsdjmp.U | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/mcon/U/d_bsdjmp.U b/mcon/U/d_bsdjmp.U new file mode 100644 index 0000000..da2f496 --- /dev/null +++ b/mcon/U/d_bsdjmp.U @@ -0,0 +1,86 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, 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: +?RCS: $Log: d_bsdjmp.U,v $ +?RCS: Revision 3.0.1.2 1997/02/28 15:31:10 ram +?RCS: patch61: added ?F: metalint hint +?RCS: +?RCS: Revision 3.0.1.1 1994/10/29 16:09:09 ram +?RCS: patch36: call ./usg explicitely instead of relying on PATH +?RCS: +?RCS: Revision 3.0 1993/08/18 12:05:45 ram +?RCS: Baseline for dist 3.0 netwide release. +?RCS: +?MAKE:d_bsdjmp: Guess Setvar cat +cc libs rm +?MAKE: -pick add $@ %< +?S:d_bsdjmp: +?S: This variable conditionally defines USE_BSDJMP if BSD _setjmp and +?S: _longjmp routines are available to do non-local gotos without saving +?S: or restoring the signal mask flag. +?S:. +?C:USE_BSDJMP (BSDJMP): +?C: This symbol, if defined, indicates that the BSD _setjmp and _longjmp +?C: routines are available to do non-local gotos wihtout saving or restoring +?C: the signal mask flag. +?C:. +?H:#$d_bsdjmp USE_BSDJMP /**/ +?H:. +?F:!set +?LINT:set d_bsdjmp +: see if _setjmp and _longjmp exists +?X: We can't check for these symbols with Inlibc because of the leading "_" +echo " " +case "$d_bsdjmp" in +'') + $cat >set.c <<EOP +#include <setjmp.h> +jmp_buf env; +int set = 1; +int main() +{ + if (_setjmp(env)) + exit(set); + set = 0; + _longjmp(env, 1); + exit(1); +} +EOP + if $cc -o set set.c $libs >/dev/null 2>&1; then + if ./set >/dev/null 2>&1; then + echo "Good! You have BSD _setjmp and _longjmp routines." >&4 + val="$define" + else + $cat <<EOM +Uh-Oh! You have BSD _setjmp and _longjmp, but they do not work properly!! +EOM + val="$undef" + fi + else + if ./usg; then + echo "You do not have _setjmp and _longjmp, but that's fine." >&4 + else + cat <<EOM +It sounds strange for a BSD system to miss _setjmp and _longjmp, but that's ok. +EOM + fi + val="$undef" + fi + ;; +*) val="$d_bsdjmp" + case "$d_bsdjmp" in + $define) echo "Good! You have BSD _setjmp and _longjmp routines." >&4;; + $undef) echo "You do not have _setjmp and _longjmp, but that's fine." >&4;; + esac + ;; +esac +set d_bsdjmp +eval $setvar +$rm -f set.c set + |