Same as other ocaml ports, ocamlbuild uses Pervasives which was removed in 
ocaml 5. This version update fixes things for ocaml 5 and continues to 
work on the current in-tree ocaml 4.14.

I've tested that these ports still build after the update:

  devel/cil
  devel/ocaml-cppo
  devel/ocaml-parmap
  textproc/hevea

ok?

Index: Makefile
===================================================================
RCS file: /cvs/ports/devel/ocaml-ocamlbuild/Makefile,v
diff -u -p -u -r1.16 Makefile
--- Makefile	24 Apr 2024 17:10:03 -0000	1.16
+++ Makefile	20 Feb 2026 16:36:50 -0000
@@ -3,8 +3,7 @@ CATEGORIES =	devel
 
 GH_ACCOUNT =	ocaml
 GH_PROJECT =	ocamlbuild
-GH_TAGNAME =	0.14.0
-REVISION =	7
+GH_TAGNAME =	0.14.1
 
 # LGPLv2.1+
 PERMIT_PACKAGE =	Yes
Index: distinfo
===================================================================
RCS file: /cvs/ports/devel/ocaml-ocamlbuild/distinfo,v
diff -u -p -u -r1.3 distinfo
--- distinfo	19 Jun 2019 09:18:18 -0000	1.3
+++ distinfo	20 Feb 2026 16:36:50 -0000
@@ -1,2 +1,2 @@
-SHA256 (ocamlbuild-0.14.0.tar.gz) = h7Kc6WlYCWwKGo7q/rYmgHey0R4b8rPeD168nPjULng=
-SIZE (ocamlbuild-0.14.0.tar.gz) = 198267
+SHA256 (ocamlbuild-0.14.1.tar.gz) = ThJ5/w74DIYuqlIHp3Ag10HonvlPDkqSo3xBiNvwglY=
+SIZE (ocamlbuild-0.14.1.tar.gz) = 199103