Define _POSIX_C_SOURCE to be 200112L, as a minimum for C99.
Strict platforms cannot be expected to accept C99 code as valid
when earlier standards versions are selected.
This helps the programs build on Solaris-like platforms (e.g.
illumos).
Fixes #3420
Signed-off-by: nia <nia@netbsd.org>
diff --git a/programs/aes/crypt_and_hash.c b/programs/aes/crypt_and_hash.c
index 1e03d43..5c70480 100644
--- a/programs/aes/crypt_and_hash.c
+++ b/programs/aes/crypt_and_hash.c
@@ -23,7 +23,7 @@
/* Enable definition of fileno() even when compiling with -std=c99. Must be
* set before config.h, which pulls in glibc's features.h indirectly.
* Harmless on other platforms. */
-#define _POSIX_C_SOURCE 1
+#define _POSIX_C_SOURCE 200112L
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"