Add test for more tricky SIZEOF_* checks

libbuild2-autoconf-tests/checks/byte-order/driver.c

@@ -1,11 +1,11 @@
-#include <stdint.h> // uint32_t
-
-#include "config.h"
-
 /* Test that the byte order detected at runtime matches the one detected at
  * compile time.
  */
 
+#include <stdint.h> /* uint32_t */
+
+#include "config.h"
+
 /* Return:
  *
  *   0 if the runtime and compile time byte orders match

libbuild2-autoconf-tests/checks/sizeof/.gitignore

@@ -0,0 +1,2 @@
+config.h
+driver

libbuild2-autoconf-tests/checks/sizeof/buildfile

@@ -0,0 +1,11 @@
+exe{driver}: c{driver} h{config}
+
+h{config}: in{config}
+
+c.poptions += "-I$out_base"
+
+if ($c.target.system != 'win32-msvc')
+{
+  c.libs += -pthread
+  c.poptions += -DTEST_PTHREAD
+}

libbuild2-autoconf-tests/checks/sizeof/config.h.in

@@ -0,0 +1,2 @@
+#undef SIZEOF_OFF_T
+#undef SIZEOF_PTHREAD_T

libbuild2-autoconf-tests/checks/sizeof/driver.c

@@ -0,0 +1,23 @@
+/* Test more tricky SIZEOF_* checks.
+ */
+
+#include "config.h"
+
+#include <sys/types.h> /* off_t */
+
+#ifdef TEST_PTHREAD
+#  include <pthread.h>
+#endif
+
+#undef NDEBUG
+#include <assert.h>
+
+int
+main ()
+{
+  assert (SIZEOF_OFF_T == sizeof (off_t));
+
+#ifdef TEST_PTHREAD
+  assert (SIZEOF_PTHREAD_T == sizeof (pthread_t));
+#endif
+}