From 2580ddfe4e198b148f7e8a6931d29a6fbcc9a234 Mon Sep 17 00:00:00 2001
From: Daniel Chen <cdchen@ca.ibm.com>
Date: Thu, 5 Mar 2026 11:03:37 -0500
Subject: [PATCH] [flang] Fix distribution build of `ISO_Fortran_binding.h` to
 also install it in `CMAKE_INSTALL_INCLUDEDIR`. (#184284)

Currently with `-DLLVM_DISTRIBUTION_COMPONENTS="flang-fortran-binding"`,
header file `ISO_Fortran_binding.h` is only installed at
`./lib/clang/23/include/ISO_Fortran_binding.h`, but not in the user
include.
This PR is to fix that so that the `ISO_Fortran_binding.h` is also
installed at `./include/flang/ISO_Fortran_binding.h`, which is the same
as the "normal" (non-distribution) build.
---
 flang/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/flang/CMakeLists.txt b/flang/CMakeLists.txt
index e21304d2e4da..be0b1f3d9b27 100644
--- a/flang/CMakeLists.txt
+++ b/flang/CMakeLists.txt
@@ -584,5 +584,9 @@ install(
   FILES include/flang/ISO_Fortran_binding.h
   DESTINATION ${HEADER_INSTALL_DIR}
   COMPONENT flang-fortran-binding)
+install(
+  FILES include/flang/ISO_Fortran_binding.h
+  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/flang
+  COMPONENT flang-fortran-binding)
 add_llvm_install_targets(install-flang-fortran-binding
   COMPONENT flang-fortran-binding)