striker 02/05/01 03:47:37
Modified: . configure.in
Log:
Restore after the tag.
Revision Changes Path
1.441 +32 -1 apr/configure.in
Index: configure.in
===================================================================
RCS file: /home/cvs/apr/configure.in,v
retrieving revision 1.440
retrieving revision 1.441
diff -u -r1.440 -r1.441
--- configure.in 1 May 2002 10:40:44 -0000 1.440
+++ configure.in 1 May 2002 10:47:37 -0000 1.441
@@ -594,6 +594,38 @@
AC_CHECK_FUNCS(create_area)
AC_CHECK_HEADERS(os2.h)
+dnl Not all systems can mmap /dev/zero (such as HP-UX). Check for that.
+if test "$ac_cv_func_mmap" = "yes" &&
+ test "$ac_cv_file__dev_zero" = "yes"; then
+ AC_MSG_CHECKING(for mmap that can map /dev/zero)
+ AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+#endif
+ int main()
+ {
+ int fd;
+ void *m;
+ fd = open("/dev/zero", O_RDWR);
+ if (fd < 0) {
+ return 1;
+ }
+ m = mmap(0, sizeof(void*), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
+ if (m < 0) { /* aka MAP_FAILED */
+ return 2;
+ }
+ if (munmap(m, sizeof(void*)) < 0) {
+ return 3;
+ }
+ return 0;
+ }], [], [ac_cv_file__dev_zero=no], [ac_cv_file__dev_zero=no])
+
+ AC_MSG_RESULT($ac_cv_file__dev_zero)
+fi
+
dnl Now we determine which one is our anonymous shmem preference.
haveshmgetanon="0"
havemmapzero="0"
@@ -1248,7 +1280,6 @@
echo $ac_n "${nl}Checking for Locking...${nl}"
AC_CHECK_FUNCS(semget semctl flock)
-APR_CHECK_FILE(/dev/zero)
AC_CHECK_HEADERS(semaphore.h)
AC_CHECK_FUNCS(sem_close sem_unlink sem_post sem_wait)
