Wrap the compat header in extern "C" { } when compiling C++ sources

This fixes a build error on OpenSolaris where the final liking of
notmuch fails because the linker can't find strcasestr() referenced
from thread.cc.
(cherry picked from commit aab54b4ce752b16725399d1543602ef3f7736c91)

diff --git a/compat/compat.h b/compat/compat.h
index 173ef680ceb8d9d9d67833fcd9db6e10ea4382aa..7767fe84a68580dbd2d2953f99645eda81403cac 100644 (file)
--- a/compat/compat.h
+++ b/compat/compat.h
@@ -26,6 +26,10 @@
 #ifndef NOTMUCH_COMPAT_H
 #define NOTMUCH_COMPAT_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #if !HAVE_GETLINE
 #include <stdio.h>
 #include <unistd.h>
@@ -42,4 +46,8 @@ getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp);
 char* strcasestr(const char *haystack, const char *needle);
 #endif /* !HAVE_STRCASESTR */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* NOTMUCH_COMPAT_H */