diff --git a/cmake-fedora-flag_release.patch b/cmake-fedora-flag_release.patch
deleted file mode 100644
index c473d5f..0000000
--- a/cmake-fedora-flag_release.patch
+++ /dev/null
@@ -1,116 +0,0 @@
-Index: cmake-3.22.0-rc1/Modules/Compiler/Absoft-Fortran.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Compiler/Absoft-Fortran.cmake
-+++ cmake-3.22.0-rc1/Modules/Compiler/Absoft-Fortran.cmake
-@@ -1,7 +1,7 @@
- string(APPEND CMAKE_Fortran_FLAGS_INIT " ")
- string(APPEND CMAKE_Fortran_FLAGS_DEBUG_INIT " -g")
- string(APPEND CMAKE_Fortran_FLAGS_MINSIZEREL_INIT " ")
--string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O3")
-+string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O2")
- string(APPEND CMAKE_Fortran_FLAGS_RELWITHDEBINFO_INIT " -O2 -g")
- set(CMAKE_Fortran_MODDIR_FLAG "-YMOD_OUT_DIR=")
- set(CMAKE_Fortran_MODPATH_FLAG "-p")
-Index: cmake-3.22.0-rc1/Modules/Compiler/G95-Fortran.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Compiler/G95-Fortran.cmake
-+++ cmake-3.22.0-rc1/Modules/Compiler/G95-Fortran.cmake
-@@ -1,7 +1,7 @@
- string(APPEND CMAKE_Fortran_FLAGS_INIT " ")
- string(APPEND CMAKE_Fortran_FLAGS_DEBUG_INIT " -g")
- string(APPEND CMAKE_Fortran_FLAGS_MINSIZEREL_INIT " -Os")
--string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O3")
-+string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O2")
- string(APPEND CMAKE_Fortran_FLAGS_RELWITHDEBINFO_INIT " -O2 -g")
- set(CMAKE_Fortran_MODDIR_FLAG "-fmod=")
- set(CMAKE_Fortran_VERBOSE_FLAG "-v")
-Index: cmake-3.22.0-rc1/Modules/Compiler/GNU.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Compiler/GNU.cmake
-+++ cmake-3.22.0-rc1/Modules/Compiler/GNU.cmake
-@@ -55,7 +55,7 @@ macro(__compiler_gnu lang)
-   string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
-   string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g")
-   string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os -DNDEBUG")
--  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3 -DNDEBUG")
-+  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2 -DNDEBUG")
-   string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g -DNDEBUG")
-   set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
-   set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
-Index: cmake-3.22.0-rc1/Modules/Compiler/GNU-Fortran.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Compiler/GNU-Fortran.cmake
-+++ cmake-3.22.0-rc1/Modules/Compiler/GNU-Fortran.cmake
-@@ -19,7 +19,7 @@ set(CMAKE_Fortran_POSTPROCESS_FLAG "-fpr
- 
- # No -DNDEBUG for Fortran.
- string(APPEND CMAKE_Fortran_FLAGS_MINSIZEREL_INIT " -Os")
--string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O3")
-+string(APPEND CMAKE_Fortran_FLAGS_RELEASE_INIT " -O2")
- 
- # No -isystem for Fortran because it will not find .mod files.
- unset(CMAKE_INCLUDE_SYSTEM_FLAG_Fortran)
-Index: cmake-3.22.0-rc1/Modules/Compiler/Intel.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Compiler/Intel.cmake
-+++ cmake-3.22.0-rc1/Modules/Compiler/Intel.cmake
-@@ -22,7 +22,7 @@ else()
-     string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
-     string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g")
-     string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os")
--    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3")
-+    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2")
-     string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g")
- 
-     set(CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "${CMAKE_${lang}_COMPILER}")
-Index: cmake-3.22.0-rc1/Modules/Compiler/NVIDIA-CUDA.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Compiler/NVIDIA-CUDA.cmake
-+++ cmake-3.22.0-rc1/Modules/Compiler/NVIDIA-CUDA.cmake
-@@ -51,7 +51,7 @@ if(NOT "x${CMAKE_CUDA_SIMULATE_ID}" STRE
-   set(CMAKE_SHARED_LIBRARY_CUDA_FLAGS -fPIC)
-   string(APPEND CMAKE_CUDA_FLAGS_INIT " ")
-   string(APPEND CMAKE_CUDA_FLAGS_DEBUG_INIT " -g")
--  string(APPEND CMAKE_CUDA_FLAGS_RELEASE_INIT " -O3 -DNDEBUG")
-+  string(APPEND CMAKE_CUDA_FLAGS_RELEASE_INIT " -O2 -DNDEBUG")
-   string(APPEND CMAKE_CUDA_FLAGS_MINSIZEREL_INIT " -O1 -DNDEBUG")
-   string(APPEND CMAKE_CUDA_FLAGS_RELWITHDEBINFO_INIT " -O2 -g -DNDEBUG")
- endif()
-Index: cmake-3.22.0-rc1/Modules/Compiler/PathScale.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Compiler/PathScale.cmake
-+++ cmake-3.22.0-rc1/Modules/Compiler/PathScale.cmake
-@@ -16,6 +16,6 @@ macro(__compiler_pathscale lang)
-   string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
-   string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g -O0")
-   string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os")
--  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3")
-+  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2")
-   string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -g -O2")
- endmacro()
-Index: cmake-3.22.0-rc1/Modules/Compiler/PGI.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Compiler/PGI.cmake
-+++ cmake-3.22.0-rc1/Modules/Compiler/PGI.cmake
-@@ -18,7 +18,7 @@ macro(__compiler_pgi lang)
-   string(APPEND CMAKE_${lang}_FLAGS_INIT " ")
-   string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g -O0")
-   string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -O2 -s")
--  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -fast -O3")
-+  string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -fast -O2")
-   string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -gopt")
- 
-   if(CMAKE_HOST_WIN32)
-Index: cmake-3.22.0-rc1/Modules/Platform/Windows-Clang.cmake
-===================================================================
---- cmake-3.22.0-rc1.orig/Modules/Platform/Windows-Clang.cmake
-+++ cmake-3.22.0-rc1/Modules/Platform/Windows-Clang.cmake
-@@ -92,7 +92,7 @@ macro(__windows_compiler_clang_gnu lang)
- 
-     string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g -Xclang -gcodeview -O0 ${__ADDED_FLAGS_DEBUG}")
-     string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os -DNDEBUG ${__ADDED_FLAGS}")
--    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3 -DNDEBUG ${__ADDED_FLAGS}")
-+    string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O2 -DNDEBUG ${__ADDED_FLAGS}")
-     string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g -DNDEBUG -Xclang -gcodeview ${__ADDED_FLAGS}")
-   endif()
-   set(CMAKE_INCLUDE_SYSTEM_FLAG_${lang} "-isystem ")
diff --git a/cmake.spec b/cmake.spec
index 8666925..b1f9e20 100644
--- a/cmake.spec
+++ b/cmake.spec
@@ -102,10 +102,6 @@ Source5:        %{name}.req
 # http://public.kitware.com/Bug/view.php?id=12965
 # https://bugzilla.redhat.com/show_bug.cgi?id=822796
 Patch100:       %{name}-findruby.patch
-# replace release flag -O3 with -O2 for fedora
-%if 0%{?fedora} && 0%{?fedora} < 34
-Patch101:       %{name}-fedora-flag_release.patch
-%endif
 # Add dl to CMAKE_DL_LIBS on MINGW
 # https://gitlab.kitware.com/cmake/cmake/issues/17600
 %if 0%{?fedora} && 0%{?fedora} < 38