diff --git a/kBuild/src/kmk/kmkbuiltin.h b/kBuild/src/kmk/kmkbuiltin.h
index 75dce94..6c773b3 100644
--- a/kBuild/src/kmk/kmkbuiltin.h
+++ b/kBuild/src/kmk/kmkbuiltin.h
@@ -31,6 +31,7 @@
 #  define pid_t intptr_t /* Note! sub_proc.c needs it to be pointer sized. */
 # endif
 #else
+# include <stdint.h>
 # include <sys/types.h>
 #endif
 
diff --git a/kBuild/src/kObjCache/kObjCache.c b/kBuild/src/kObjCache/kObjCache.c
index d6badb7..71a14f2 100644
--- a/kBuild/src/kObjCache/kObjCache.c
+++ b/kBuild/src/kObjCache/kObjCache.c
@@ -66,6 +66,7 @@
 # include <unistd.h>
 # include <sys/wait.h>
 # include <sys/time.h>
+# include <sys/file.h>
 # ifndef O_BINARY
 #  define O_BINARY 0
 # endif
diff --git a/kBuild/src/kmk/config.h.linux b/kBuild/src/kmk/config.h.linux
index 47de647..12715b0 100644
--- a/kBuild/src/kmk/config.h.linux
+++ b/kBuild/src/kmk/config.h.linux
@@ -71,7 +71,7 @@
 
 /* Define to 1 if you have the declaration of `bsd_signal', and to 0 if you
    don't. */
-/* #define HAVE_DECL_BSD_SIGNAL 1 */
+#define HAVE_DECL_BSD_SIGNAL 1
 
 /* Define to 1 if you have the declaration of `dlerror', and to 0 if you
    don't. */
diff --git a/kBuild/src/sed/lib/utils.c b/kBuild/src/sed/lib/utils.c
index 647fd6d..fdb0b72 100644
--- a/kBuild/src/sed/lib/utils.c
+++ b/kBuild/src/sed/lib/utils.c
@@ -35,6 +35,8 @@
 # include <stdlib.h>
 #endif /* HAVE_STDLIB_H */
 
+#include <unistd.h>
+
 #include "utils.h"
 
 const char *myname;