From 98e69731a99b9dbb4601fb1db1b3cdbe9acfe73b Mon Sep 17 00:00:00 2001
From: Tobias Frost <tobi@debian.org>
Date: Sun, 1 Feb 2026 12:27:02 +0100
Subject: [PATCH] Remove -ffile-prefix-map= from CMake module generated
 compiler flags.

Forwarded: no, Debian specific
Applied-Upstream: <version|URL|commit, identifies patches merged upstream, optional>
Reviewed-by: <name and email of a reviewer, optional>
Last-Update: 2024-05-24 <YYYY-MM-DD, last update of the meta-information, optional>

Last-Update: 2024-05-24 <YYYY-MM-DD, last update of the meta-information, optional>
Gbp-Pq: Name 0012-cmake-do-not-export-ffile-prefix.patch
---
 CMakeLists.txt                           | 3 +++
 adm/templates/OpenCASCADEConfig.cmake.in | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a3794d9dd..a92f89787 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1386,6 +1386,9 @@ if (APPLE)
 endif()
 
 # Configure and install cmake config file
+# remove -ffile-prefix-map=
+string(REGEX REPLACE " -ffile-prefix-map=.*=\\. " " " CMAKE_C_FLAGS_CLEANED ${CMAKE_C_FLAGS})
+string(REGEX REPLACE " -ffile-prefix-map=.*=\\. " " " CMAKE_CXX_FLAGS_CLEANED ${CMAKE_CXX_FLAGS})
 configure_file("${CMAKE_SOURCE_DIR}/adm/templates/OpenCASCADEConfig.cmake.in" "OpenCASCADEConfig.cmake" @ONLY)
 install(FILES "${CMAKE_BINARY_DIR}/OpenCASCADEConfig.cmake" DESTINATION  "${INSTALL_DIR_CMAKE}")
 
diff --git a/adm/templates/OpenCASCADEConfig.cmake.in b/adm/templates/OpenCASCADEConfig.cmake.in
index dbecabaa8..b4e5c50a6 100644
--- a/adm/templates/OpenCASCADEConfig.cmake.in
+++ b/adm/templates/OpenCASCADEConfig.cmake.in
@@ -43,8 +43,8 @@ set (OpenCASCADE_INCLUDE_DIR  "@CMAKE_INSTALL_FULL_INCLUDEDIR@/opencascade")
 set (OpenCASCADE_RESOURCE_DIR "@CMAKE_INSTALL_FULL_DATAROOTDIR@/opencascade/resources")
 
 # The C and C++ flags added by OpenCASCADE to the cmake-configured flags.
-set (OpenCASCADE_C_FLAGS      "@CMAKE_C_FLAGS@")
-set (OpenCASCADE_CXX_FLAGS    "@CMAKE_CXX_FLAGS@")
+set (OpenCASCADE_C_FLAGS      "@CMAKE_C_FLAGS_CLEANED@")
+set (OpenCASCADE_CXX_FLAGS    "@CMAKE_CXX_FLAGS_CLEANED@")
 @SET_OpenCASCADE_LINKER_FLAGS@
 
 # List of available OpenCASCADE modules.
-- 
2.30.2