commit d36dbd6441a3864f1a6a64baefe127fa729d0fb3
parent aca33971e8c64b565d7ab5006b2c7bc9f2970b94
Author: tgoodwin <tgoodwin>
Date: Tue, 30 Sep 1997 10:19:04 +0000
abortive attempt to parse output of
#include <signal.h>
to find real signal files
Diffstat:
| M | configure.ac | | | 54 | +++++++++++++++++++++++++++++------------------------- |
1 file changed, 29 insertions(+), 25 deletions(-)
diff --git a/configure.ac b/configure.ac
@@ -9,6 +9,7 @@ xyes)
;;
esac
+AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_YACC
AC_CHECK_PROGS(LN, ln cp)
@@ -17,34 +18,37 @@ AC_CHECK_HEADERS(sys/resource.h sys/time.h sys/types.h unistd.h)
AC_HEADER_DIRENT
AC_HEADER_STDC
-dnl Linux puts real signal names in /usr/include/asm/signal.h.
-AC_CACHE_CHECK(for signal names in <sys/signal.h>, rc_cv_sys_signal_h,
- if grep SIGINT /usr/include/sys/signal.h >/dev/null 2>&1; then
- rc_cv_sys_signal_h=yes
- else
- rc_cv_sys_signal_h=no
- fi)
-
-case "x$rc_cv_sys_signal_h" in
-xyes)
- SIGNAL_H=/usr/include/sys/signal.h
- ;;
-xno)
- AC_CACHE_CHECK(for signal names in <asm/signal.h>, rc_cv_asm_signal_h,
- if grep SIGINT /usr/include/asm/signal.h >/dev/null 2>&1; then
- rc_cv_asm_signal_h=yes
- else
- rc_cv_asm_signal_h=no
- fi)
+dnl Linux puts real signal names in /usr/include/asm/signal.h. NT puts
+dnl them somewhere else altogether. This attempts to parse the output
+dnl of saying `#include <signal.h>' to find the full path of files named
+dnl signal.h, then examines each of those to see if it contains the
+dnl `#define's we want. What a hack.
- case "x$rc_cv_asm_signal_h" in
- xyes)
- SIGNAL_H=/usr/include/asm/signal.h
- ;;
- xno)
- AC_MSG_ERROR(Can't find signal names in <sys/signal.h> or <asm/signal.h>)
+echo '#include <signal.h>' > temp.c
+AC_CACHE_CHECK(for full paths of <signal.h>, rc_cv_full_signal_h, [
+ rc_cv_full_signal_h=`$CPP temp.c |sed -n 's/.*"\(.*signal.h\)".*/\1/p' |sort -u |sed 'y/
+/ /'`
+ case "x$rc_cv_full_signal_h" in
+ x)
+ rc_cv_full_signal_h='/usr/include/sys/signal.h /usr/include/asm/signal.h'
;;
esac
+])
+rm temp.c
+
+AC_CACHE_CHECK(for signal names, rc_cv_signal_h,
+ for i in $rc_cv_full_signal_h; do
+ if grep SIGINT $i >/dev/null 2>&1; then
+ rc_cv_signal_h=$i
+ fi
+ done
+)
+case "x$rc_cv_signal_h" in
+x)
+ AC_MSG_ERROR(Can't find signal names in $rc_cv_full_signal_h)
+ ;;
+*)
+ SIGNAL_H=$rc_cv_signal_h
;;
esac
AC_SUBST(SIGNAL_H)
