securememory: use function checks

Checking for getpagesize in meson.build is
useless if we don't check the resulting define
in the code. So do that.

diff --git a/gtk/gtksecurememory.c b/gtk/gtksecurememory.c
index a83f57d9613e6efc2c91f3e0ada7fd046c56ba7a..f5c43c406878a5e4a61be6c35b3bc894ffd38d0e 100644 (file)
--- a/gtk/gtksecurememory.c
+++ b/gtk/gtksecurememory.c
@@ -35,7 +35,7 @@
 
 #include <sys/types.h>
 
-#if defined(HAVE_MLOCK)
+#if defined(HAVE_SYS_MMAN_H)
 #include <sys/mman.h>
 #endif
 
@@ -229,7 +229,7 @@ pool_alloc (void)
                return NULL;
        }
 
-#ifdef HAVE_MMAP
+#if defined(HAVE_MMAP) && defined(HAVE_GETPAGESIZE)
        /* A pool with an available item */
         Pool *pool = NULL;
 
@@ -916,7 +916,7 @@ sec_acquire_pages (size_t *sz,
        g_assert (*sz);
        g_assert (during_tag);
 
-#if defined(HAVE_MLOCK) && defined(HAVE_MMAP)
+#if defined(HAVE_MLOCK) && defined(HAVE_MMAP) && defined(HAVE_GETPAGESIZE)
        /* Make sure sz is a multiple of the page size */
        unsigned long pgsize = getpagesize ();
 
@@ -1000,7 +1000,7 @@ sec_release_pages (void *pages, size_t sz)
 {
        g_assert (pages);
 
-#if defined(HAVE_MLOCK)
+#if defined(HAVE_MLOCK) && defined(HAVE_GETPAGESIZE)
        g_assert (sz % getpagesize () == 0);
 
        if (munlock (pages, sz) < 0 && gtk_secure_warnings)