https://perl5.git.perl.org / metaconfig.git / blame
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|---|---|---|
| d8875586 MBT |
1 | ?RCS: $Id: d_sigsetjmp.U 1 2006-08-24 12:32:52Z rmanfredi $ |
| 2 | ?RCS: | |
| 3 | ?RCS: Copyright (c) 1996, Andy Dougherty | |
| 4 | ?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi | |
| 5 | ?RCS: | |
| 6 | ?RCS: You may redistribute only under the terms of the Artistic Licence, | |
| 7 | ?RCS: as specified in the README file that comes with the distribution. | |
| 8 | ?RCS: You may reuse parts of this distribution only within the terms of | |
| 9 | ?RCS: that same Artistic Licence; a copy of which may be found at the root | |
| 10 | ?RCS: of the source tree for dist 4.0. | |
| 11 | ?RCS: | |
| 12 | ?RCS: You may distribute under the terms of either the GNU General Public | |
| 13 | ?RCS: License or the Artistic License, as specified in the README file. | |
| 14 | ?RCS: | |
| 15 | ?RCS: $Log: d_sigsetjmp.U,v $ | |
| 16 | ?RCS: Revision 3.0.1.1 1997/02/28 15:44:33 ram | |
| 17 | ?RCS: patch61: created | |
| 18 | ?RCS: | |
| 19 | ?MAKE:d_sigsetjmp: Setvar cat +cc +ccflags +ldflags libs rm | |
| 20 | ?MAKE: -pick add $@ %< | |
| 21 | ?S:d_sigsetjmp: | |
| 22 | ?S: This variable conditionally defines the HAS_SIGSETJMP symbol, | |
| 23 | ?S: which indicates that the sigsetjmp() routine is available to | |
| 24 | ?S: call setjmp() and optionally save the process's signal mask. | |
| 25 | ?S:. | |
| 26 | ?C:HAS_SIGSETJMP: | |
| 27 | ?C: This variable indicates to the C program that the sigsetjmp() | |
| 28 | ?C: routine is available to save the calling process's registers | |
| 29 | ?C: and stack environment for later use by siglongjmp(), and | |
| 30 | ?C: to optionally save the process's signal mask. See | |
| 31 | ?C: Sigjmp_buf, Sigsetjmp, and Siglongjmp. | |
| 32 | ?C:. | |
| 33 | ?C:Sigjmp_buf: | |
| 34 | ?C: This is the buffer type to be used with Sigsetjmp and Siglongjmp. | |
| 35 | ?C:. | |
| 36 | ?C:Sigsetjmp: | |
| 37 | ?C: This macro is used in the same way as sigsetjmp(), but will invoke | |
| 38 | ?C: traditional setjmp() if sigsetjmp isn't available. | |
| 39 | ?C: See HAS_SIGSETJMP. | |
| 40 | ?C:. | |
| 41 | ?C:Siglongjmp: | |
| 42 | ?C: This macro is used in the same way as siglongjmp(), but will invoke | |
| 43 | ?C: traditional longjmp() if siglongjmp isn't available. | |
| 44 | ?C: See HAS_SIGSETJMP. | |
| 45 | ?C:. | |
| 46 | ?H:?%<:#$d_sigsetjmp HAS_SIGSETJMP /**/ | |
| 47 | ?H:?%<:#ifdef HAS_SIGSETJMP | |
| 48 | ?H:?%<:#define Sigjmp_buf sigjmp_buf | |
| 49 | ?H:?%<:#define Sigsetjmp(buf,save_mask) sigsetjmp((buf),(save_mask)) | |
| 50 | ?H:?%<:#define Siglongjmp(buf,retval) siglongjmp((buf),(retval)) | |
| 51 | ?H:?%<:#else | |
| 52 | ?H:?%<:#define Sigjmp_buf jmp_buf | |
| 53 | ?H:?%<:#define Sigsetjmp(buf,save_mask) setjmp((buf)) | |
| 54 | ?H:?%<:#define Siglongjmp(buf,retval) longjmp((buf),(retval)) | |
| 55 | ?H:?%<:#endif | |
| 56 | ?H:. | |
| 57 | ?W:%<:Sigjmp_buf Sigsetjmp Siglongjmp | |
| 58 | ?F:!set | |
| 59 | ?LINT:set d_sigsetjmp | |
| 60 | : see if sigsetjmp exists | |
| 61 | ?X: We can't check for these symbols with Inlibc because sigsetjmp | |
| 62 | ?X: is (sometimes? always?) a macro under GCC | |
| 63 | echo " " | |
| 64 | case "$d_sigsetjmp" in | |
| 65 | '') | |
| 66 | $cat >set.c <<'EOP' | |
| 67 | #include <setjmp.h> | |
| 68 | sigjmp_buf env; | |
| 69 | int set = 1; | |
| 70 | int main() | |
| 71 | { | |
| 72 | if (sigsetjmp(env,1)) | |
| 73 | exit(set); | |
| 74 | set = 0; | |
| 75 | siglongjmp(env, 1); | |
| 76 | exit(1); | |
| 77 | } | |
| 78 | EOP | |
| 79 | if $cc $ccflags $ldflags -o set set.c $libs > /dev/null 2>&1 ; then | |
| 80 | if ./set >/dev/null 2>&1; then | |
| 81 | echo "POSIX sigsetjmp found." >&4 | |
| 82 | val="$define" | |
| 83 | else | |
| 84 | $cat >&4 <<EOM | |
| 85 | Uh-Oh! You have POSIX sigsetjmp and siglongjmp, but they do not work properly!! | |
| 86 | I'll ignore them. | |
| 87 | EOM | |
| 88 | val="$undef" | |
| 89 | fi | |
| 90 | else | |
| 91 | echo "sigsetjmp not found." >&4 | |
| 92 | val="$undef" | |
| 93 | fi | |
| 94 | ;; | |
| 95 | *) val="$d_sigsetjmp" | |
| 96 | case "$d_sigsetjmp" in | |
| 97 | $define) echo "POSIX sigsetjmp found." >&4;; | |
| 98 | $undef) echo "sigsetjmp not found." >&4;; | |
| 99 | esac | |
| 100 | ;; | |
| 101 | esac | |
| 102 | set d_sigsetjmp | |
| 103 | eval $setvar | |
| 104 | $rm -f set.c set | |
| 105 |