Simplify cmake build

Simplify cmake build

Pull Request resolved: #352

.github/actions/build/action.yml

@@ -26,10 +26,10 @@ runs:
       export CC=/usr/bin/clang-14
       export CC_FOR_BUILD=$CC
       cmake -G Ninja -DCMAKE_BUILD_TYPE=Release \
-        -DCMAKE_C_COMPILER_LAUNCHER=/usr/local/bin/ccache -DCMAKE_CXX_COMPILER_LAUNCHER=/usr/local/bin/ccache \
+        -DCCACHE_PATH=/usr/local/bin/ccache \
         -DCMAKE_TOOLCHAIN_FILE=../ydb/clang.toolchain \
-        -DCMAKE_CXX_FLAGS="-fsanitize=${{ inputs.sanitizer }} -g -gsplit-dwarf -gz -fno-omit-frame-pointer -UNDEBUG ${{ inputs.extra_compile_flags }}" \
-        -DCMAKE_C_FLAGS="-fsanitize=${{ inputs.sanitizer }} -g -gsplit-dwarf -gz -fno-omit-frame-pointer -UNDEBUG ${{ inputs.extra_compile_flags }}" \
+        -DCMAKE_CXX_FLAGS="-fsanitize=${{ inputs.sanitizer }} -g -gsplit-dwarf -gz -fno-omit-frame-pointer ${{ inputs.extra_compile_flags }}" \
+        -DCMAKE_C_FLAGS="-fsanitize=${{ inputs.sanitizer }} -g -gsplit-dwarf -gz -fno-omit-frame-pointer ${{ inputs.extra_compile_flags }}" \
         ../ydb
   - name: Configure
     shell: bash
@@ -45,12 +45,10 @@ runs:
       # FIXME: set DCMAKE_CXX_FLAGS_RELWITHDEBINFO and DCMAKE_CXX_FLAGS bacause of global_flags.cmake flags override.
 
       cmake -G Ninja -DCMAKE_BUILD_TYPE=Release \
-        -DCMAKE_C_COMPILER_LAUNCHER=/usr/local/bin/ccache -DCMAKE_CXX_COMPILER_LAUNCHER=/usr/local/bin/ccache \
+        -DCCACHE_PATH=/usr/local/bin/ccache \
         -DCMAKE_TOOLCHAIN_FILE=../ydb/clang.toolchain \
-        -DCMAKE_C_FLAGS="-O2 -UNDEBUG ${{ inputs.extra_compile_flags }}" \
-        -DCMAKE_CXX_FLAGS="-O2 -UNDEBUG ${{ inputs.extra_compile_flags }}" \
-        -DCMAKE_C_FLAGS_RELEASE="-O2 -UNDEBUG ${{ inputs.extra_compile_flags }}" \
-        -DCMAKE_CXX_FLAGS_RELEASE="-O2 -UNDEBUG ${{ inputs.extra_compile_flags }}" \
+        -DCMAKE_C_FLAGS="${{ inputs.extra_compile_flags }}" \
+        -DCMAKE_CXX_FLAGS="${{ inputs.extra_compile_flags }}" \
         ../ydb
   - name: Build
     shell: bash

.github/prewarm/build.sh

@@ -14,10 +14,8 @@ cd /ydbwork/build
 
 echo "::group::cmake"
 cmake -G Ninja -DCMAKE_BUILD_TYPE=Release \
--DCMAKE_C_COMPILER_LAUNCHER=/usr/local/bin/ccache -DCMAKE_CXX_COMPILER_LAUNCHER=/usr/local/bin/ccache \
+-DCCACHE_PATH=/usr/local/bin/ccache \
 -DCMAKE_TOOLCHAIN_FILE=../ydb/clang.toolchain \
--DCMAKE_C_FLAGS_RELEASE="-O2 -UNDEBUG" \
--DCMAKE_CXX_FLAGS_RELEASE="-O2 -UNDEBUG" \
 ../ydb
 echo "::endgroup::"
 

BUILD.md

@@ -87,9 +87,8 @@ Run cmake to generate build configuration:
 ```bash
 cd build
 cmake -G Ninja -DCMAKE_BUILD_TYPE=Release \
-  -DCMAKE_C_FLAGS_RELEASE="-O3 -DNDEBUG" \
-  -DCMAKE_CXX_FLAGS_RELEASE="-O3 -DNDEBUG" \
-  -DCMAKE_TOOLCHAIN_FILE=../ydb/clang.toolchain ../ydb
+  -DCMAKE_TOOLCHAIN_FILE=../ydb/clang.toolchain \
+  ../ydb
 ```
 
 
@@ -127,14 +126,12 @@ With enabled Ccache, you can finish the compilation of all targets on supported
     export CONAN_USER_HOME=~/ydbwork/build
     ```
 
-4. Genreate build configuration using `ccache`
+4. Generate build configuration using `ccache`
     ```bash
     cd build
     cmake -G Ninja -DCMAKE_BUILD_TYPE=Release \
-    -DCMAKE_C_COMPILER_LAUNCHER=/usr/local/bin/ccache -DCMAKE_CXX_COMPILER_LAUNCHER=/usr/local/bin/ccache \
+    -DCCACHE_PATH=/usr/local/bin/ccache \
     -DCMAKE_TOOLCHAIN_FILE=../ydb/clang.toolchain \
-    -DCMAKE_C_FLAGS_RELEASE="-O2 -UNDEBUG" \
-    -DCMAKE_CXX_FLAGS_RELEASE="-O2 -UNDEBUG" \
     ../ydb
    
     ```

clang.toolchain

@@ -4,5 +4,16 @@ set(CMAKE_EXE_LINKER_FLAGS "-fuse-ld=lld -rdynamic")
 set(CMAKE_SHARED_LINKER_FLAGS "-fuse-ld=lld")
 set(CMAKE_C_STANDARD_LIBRARIES "-lc -lm")
 set(CMAKE_CXX_STANDARD_LIBRARIES "-lc -lm")
+if (CCACHE_PATH)
+    set(CMAKE_C_COMPILER_LAUNCHER "${CCACHE_PATH}"  CACHE STRING "C++ compiler launcher")
+    set(CMAKE_CXX_COMPILER_LAUNCHER "${CCACHE_PATH}" CACHE STRING "C compiler launcher")
+
+    # TODO: change ydb/.github/prewarm/build.sh in order to remove the difference with non-cache builds
+    set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2 -UNDEBUG"  CACHE STRING "C++ compiler flags")
+    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2 -UNDEBUG" CACHE STRING "C compiler flags")
+else()
+    set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3 -UNDEBUG"  CACHE STRING "C++ compiler flags")
+    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -UNDEBUG" CACHE STRING "C compiler flags")
+endif()
 set(ENV{CC} clang-14)
 set(ENV{CXX} clang++-14)