configure: include stddef.h for NULL
This fixes an observed failure to detect madvise() on Linux.
To avoid similar issues, all other tests that use NULL but don't already
have stddef.h (or another header that is defined to provide NULL,
such as stdio.h, unistd.h, or time.h) are also fixed.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/configure b/configure
index 9e65de0..4f57054 100755
--- a/configure
+++ b/configure
@@ -1329,6 +1329,7 @@
cat > $TMPC <<EOF
//#include <stdio.h>
#include <png.h>
+#include <stddef.h>
int main(void) {
png_structp png_ptr;
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
@@ -1513,6 +1514,7 @@
brlapi_libs="-lbrlapi"
cat > $TMPC << EOF
#include <brlapi.h>
+#include <stddef.h>
int main( void ) { return brlapi__openConnection (NULL, NULL, NULL); }
EOF
if compile_prog "" "$brlapi_libs" ; then
@@ -1747,6 +1749,7 @@
cat > $TMPC <<EOF
#include <libaio.h>
#include <sys/eventfd.h>
+#include <stddef.h>
int main(void) { io_setup(0, NULL); io_set_eventfd(NULL, 0); eventfd(0, 0); return 0; }
EOF
if compile_prog "" "-laio" ; then
@@ -2127,6 +2130,7 @@
cat > $TMPC << EOF
#include <sys/types.h>
#include <sys/mman.h>
+#include <stddef.h>
int main(void) { return madvise(NULL, 0, MADV_DONTNEED); }
EOF
if compile_prog "" "" ; then
@@ -2139,6 +2143,7 @@
posix_madvise=no
cat > $TMPC << EOF
#include <sys/mman.h>
+#include <stddef.h>
int main(void) { return posix_madvise(NULL, 0, POSIX_MADV_DONTNEED); }
EOF
if compile_prog "" "" ; then
