X-Git-Url: https://git.cworth.org/git?p=notmuch;a=blobdiff_plain;f=compat%2Fcompat.h;h=c1ee0f93e9a907463a49dd2d5aee5ea6d96cc493;hp=173ef680ceb8d9d9d67833fcd9db6e10ea4382aa;hb=31c7001c99e042c2722217410d8a913875d44149;hpb=7d06e14e79f41c485f6cb448994498c5581dc69d

diff --git a/compat/compat.h b/compat/compat.h
index 173ef680..c1ee0f93 100644
--- a/compat/compat.h
+++ b/compat/compat.h
@@ -26,6 +26,14 @@
 #ifndef NOTMUCH_COMPAT_H
 #define NOTMUCH_COMPAT_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !STD_GETPWUID
+#define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+
 #if !HAVE_GETLINE
 #include <stdio.h>
 #include <unistd.h>
@@ -42,4 +50,16 @@ getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp);
 char* strcasestr(const char *haystack, const char *needle);
 #endif /* !HAVE_STRCASESTR */
 
+/* Silence gcc warnings about unused results.  These warnings exist
+ * for a reason; any use of this needs to be justified. */
+#ifdef __GNUC__
+#define IGNORE_RESULT(x) ({ __typeof__(x) __z = (x); (void)(__z = __z); })
+#else /* !__GNUC__ */
+#define IGNORE_RESULT(x) x
+#endif /* __GNUC__ */
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* NOTMUCH_COMPAT_H */