misc/util.c: enable MinGW alarm() when building for Windows

To compile for Windows, this file needs MinGW's implementation of
alarm().  To expose that definition, some macros must be defined before
including the system headers.  This was done in Android.bp, but it was
not done in the autotools-based build system.  Define these macros in
the source file itself so that all build systems work.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/misc/Android.bp b/misc/Android.bp
index 2baeac2..2b1620a 100644 (file)
--- a/misc/Android.bp
+++ b/misc/Android.bp
@@ -83,8 +83,6 @@ cc_binary {
         windows: {
             include_dirs: [ "external/e2fsprogs/include/mingw" ],
             cflags: [
-                "-D_POSIX",
-                "-D__USE_MINGW_ALARM",
                 // mke2fs.c has a warning from gcc which cannot be suppressed:
                 // passing argument 3 of 'ext2fs_get_device_size' from
                 // incompatible pointer type

diff --git a/misc/util.c b/misc/util.c
index e84ebab..3e83169 100644 (file)
--- a/misc/util.c
+++ b/misc/util.c
@@ -16,6 +16,11 @@
 #define _LARGEFILE64_SOURCE
 #endif
 
+#ifdef _WIN32
+#define _POSIX
+#define __USE_MINGW_ALARM
+#endif
+
 #include "config.h"
 #include <fcntl.h>
 #include <setjmp.h>