1 files changed, 11 insertions, 1 deletions

diff --git a/src/lib/libcrypto/Makefile b/src/lib/libcrypto/Makefile
index b92f8cd56d..b38bf884b9 100644
--- a/src/lib/libcrypto/Makefile
+++ b/src/lib/libcrypto/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.38 2020/01/22 06:56:50 jsing Exp $
+# $OpenBSD: Makefile,v 1.39 2020/01/22 07:58:27 jsing Exp $
 
 LIB=    crypto
 LIBREBUILD=y
@@ -411,6 +411,16 @@ HDRS_GEN=\
 
 prereq: obj_mac.h
 
+check_includes: prereq
+        @cd ${.CURDIR}; for i in $(HDRS) $(HDRS_GEN); do \
+            j="cmp -s $$i ${DESTDIR}/usr/include/openssl/`basename $$i` || \
+                (echo \"`basename $$i` differs from installed version; \" \
+                \"did you forget 'make includes'?\" && false)"; \
+            eval "$$j"; \
+        done;
+
+all: check_includes
+
 includes: prereq
         @test -d ${DESTDIR}/usr/include/openssl || \
             mkdir ${DESTDIR}/usr/include/openssl