diff --git a/0008-FortranCInterface-Fix-compatibility-with-GCC-gfortra.patch b/0008-FortranCInterface-Fix-compatibility-with-GCC-gfortra.patch
new file mode 100644
index 0000000..cb1f4bc
--- /dev/null
+++ b/0008-FortranCInterface-Fix-compatibility-with-GCC-gfortra.patch
@@ -0,0 +1,49 @@
+From 5ec4aa48f7fb0a6ab4b1385e5512527ecb24f588 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Bj=C3=B6rn=20Esser?= <besser82@fedoraproject.org>
+Date: Wed, 19 Jan 2022 17:26:14 +0100
+Subject: [PATCH] FortranCInterface: Fix compatibility with GCC gfortran 12 LTO
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Since version 12.0 the GCC Fortran compiler has implemented "WG5/N1942",
+which causes, if link-time opmization is enabled, obfuscation of hard-coded
+string values in the compiler objects and its resulting ELF-binaries.
+
+This causes the CMake-internal detection of the mangling scheme for the
+naming of subroutines to fail.  Thus we must ensure to have any link-time
+optimization features to be disabled on the executable file we perform the
+detection on.
+
+Fixes: #23123
+
+Signed-off-by: Björn Esser <besser82@fedoraproject.org>
+---
+ Modules/FortranCInterface/CMakeLists.txt | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/Modules/FortranCInterface/CMakeLists.txt b/Modules/FortranCInterface/CMakeLists.txt
+index 13e4498ad9..6bbb753042 100644
+--- a/Modules/FortranCInterface/CMakeLists.txt
++++ b/Modules/FortranCInterface/CMakeLists.txt
+@@ -5,6 +5,17 @@ cmake_minimum_required(VERSION ${CMAKE_VERSION})
+ project(FortranCInterface C Fortran)
+ include(${FortranCInterface_BINARY_DIR}/Input.cmake OPTIONAL)
+ 
++# If IPO is enabled here, GCC gfortran >= 12.0 will obfuscate
++# the strings of the return values in the compiled executable,
++# which we use to regex match against later.
++if(CMAKE_Fortran_COMPILER_ID STREQUAL "GNU" AND
++  CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER_EQUAL 12)
++  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-lto")
++  set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fno-lto")
++  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-lto")
++  set(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE} -fno-lto")
++endif()
++
+ # Check if the C compiler supports '$' in identifiers.
+ include(CheckCSourceCompiles)
+ check_c_source_compiles("
+-- 
+2.34.1
+
diff --git a/cmake.spec b/cmake.spec
index eb935ca..45dff6b 100644
--- a/cmake.spec
+++ b/cmake.spec
@@ -68,7 +68,7 @@
 %{?rcsuf:%global versuf -%{rcsuf}}
 
 # For handling bump release by rpmdev-bumpspec and mass rebuild
-%global baserelease 5
+%global baserelease 6
 
 # Uncomment if building for EPEL
 #global name_suffix %%{major_version}
@@ -124,6 +124,10 @@ Patch106:       0006-FindBoost-Do-not-warn-about-now-supported-version-1..patch
 # FindGLUT: Provide legacy GLUT_INCLUDE_DIR result in pkg-config code path (merged in upstream)
 # https://gitlab.kitware.com/cmake/cmake/-/issues/23018
 Patch107:       0007-FindGLUT-Provide-legacy-GLUT_INCLUDE_DIR-result-in-p.patch
+# FortranCInterface: Fix compatibility with GCC gfortran 12 LTO (proposed PR upstream)
+# https://bugzilla.redhat.com/show_bug.cgi?id=2041904
+# https://gitlab.kitware.com/cmake/cmake/-/issues/23123
+Patch108:       0008-FortranCInterface-Fix-compatibility-with-GCC-gfortra.patch
 
 # Patch for renaming on EPEL
 %if 0%{?name_suffix:1}
@@ -541,6 +545,10 @@ popd
 
 
 %changelog
+* Wed Jan 19 2022 Björn Esser <besser82@fedoraproject.org> - 3.22.1-6
+- Add patch to fix compatibility of FortranCInterface with GCC gfortran 12 LTO
+  Fixes rhbz#2041904
+
 * Sun Dec 26 2021 Björn Esser <besser82@fedoraproject.org> - 3.22.1-5
 - Backport two patches fixing regressions in FindBoost and FindGLUT