restore shadow.h independence

Commit ee5dce336597 made busybox require shadow.h from the toolchain even
if the config opted for the internal busybox implementation.  This makes
building with toolchains that lack shadow support impossible.  Since the
merge only saved us from duplicating a simple structure (whose ABI isn't
going to ever change), restore the logic for complete busybox shadow
independence by reverting that previous commit slightly.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 6f4c547e5..422670f19 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -76,7 +76,12 @@
 #include <pwd.h>
 #include <grp.h>
 #if ENABLE_FEATURE_SHADOWPASSWDS
-# include <shadow.h>
+# if !ENABLE_USE_BB_SHADOW
+/* If using busybox's shadow implementation, do not include the shadow.h
+ * header as the toolchain may not provide it at all.
+ */
+#  include <shadow.h>
+# endif
 #endif
 
 /* Some libc's forget to declare these, do it ourself */