Error out at runtime when seteuid/setresuid or setegid/setresgid are not

available. This means it's possible to compile libreplace when these
functions are not available and use it, as long as this particular
function is not used.

diff --git a/lib/replace/replace.c b/lib/replace/replace.c
index be277445923ac43d131464d8b7fcaa4dae951e8f..fc15717349e1d189dcd9494d1bc2dd61e12ca92c 100644 (file)
--- a/lib/replace/replace.c
+++ b/lib/replace/replace.c
@@ -372,7 +372,8 @@ int rep_seteuid(uid_t euid)
 #ifdef HAVE_SETRESUID
        return setresuid(-1, euid, -1);
 #else
-#  error "You need a seteuid function"
+       errno = ENOSYS;
+       return -1;
 #endif
 }
 #endif
@@ -383,7 +384,8 @@ int rep_setegid(gid_t egid)
 #ifdef HAVE_SETRESGID
        return setresgid(-1, egid, -1);
 #else
-#  error "You need a setegid function"
+       errno = ENOSYS;
+       return -1;
 #endif
 }
 #endif