Check for working mmap()

OS/2 doesn't have a working mmap().

diff --git a/configure.ac b/configure.ac
index 9a8ebe9..2defbd4 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -650,6 +650,11 @@ fi
 AC_CHECK_HEADER([sys/mman.h],
    [AC_DEFINE(HAVE_SYS_MMAN_H, [1], [Define to 1 if we have <sys/mman.h>])])
 
+AC_CHECK_FUNC(mmap, have_mmap=yes, have_mmap=no)
+if test x$have_mmap = xyes; then
+   AC_DEFINE(HAVE_MMAP, 1, [Whether we have mmap()])
+fi
+
 AC_CHECK_FUNC(mprotect, have_mprotect=yes, have_mprotect=no)
 if test x$have_mprotect = xyes; then
    AC_DEFINE(HAVE_MPROTECT, 1, [Whether we have mprotect()])

diff --git a/test/utils.c b/test/utils.c
index 56701c4..4025602 100644 (file)
--- a/test/utils.c
+++ b/test/utils.c
@@ -229,7 +229,7 @@ typedef struct
     int n_bytes;
 } info_t;
 
-#if defined(HAVE_MPROTECT) && defined(HAVE_GETPAGESIZE) && defined(HAVE_SYS_MMAN_H)
+#if defined(HAVE_MPROTECT) && defined(HAVE_GETPAGESIZE) && defined(HAVE_SYS_MMAN_H) && defined(HAVE_MMAP)
 
 /* This is apparently necessary on at least OS X */
 #ifndef MAP_ANONYMOUS