libbb: don't build useless functions

The functions ndelay_on(), ndelay_off() and close_on_exec_on()
don't do anything useful because our fcntl(2) implementation
doesn't support the features they require.

Replace them with stubs.

Saves 176-208 bytes.

1 files changed, 6 insertions, 0 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 7683b3f63..a4eebab99 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -592,9 +592,15 @@ const char* endofname(const char *name) FAST_FUNC;
 char *is_prefixed_with(const char *string, const char *key) FAST_FUNC;
 char *is_suffixed_with(const char *string, const char *key) FAST_FUNC;
 
+#if !ENABLE_PLATFORM_MINGW32
 int ndelay_on(int fd) FAST_FUNC;
 int ndelay_off(int fd) FAST_FUNC;
 void close_on_exec_on(int fd) FAST_FUNC;
+#else
+static inline int ndelay_on(int fd UNUSED_PARAM) { return 0; }
+static inline int ndelay_off(int fd UNUSED_PARAM) { return 0; }
+static inline void close_on_exec_on(int fd UNUSED_PARAM) { return; }
+#endif
 void xdup2(int, int) FAST_FUNC;
 void xmove_fd(int, int) FAST_FUNC;