build: add size-optimized release build

.docker/build-linux.sh

@@ -121,6 +121,13 @@ case "-$BUILD_TYPE-" in
     CMAKE_ARGS="${CMAKE_ARGS} -DCMAKE_BUILD_TYPE=Release"
     CMAKE_ARGS="${CMAKE_ARGS} -DWITH_BENCHMARKS=1"
     ;;
+  *-relsize-*)
+    CMAKE_ARGS="${CMAKE_ARGS} -DCMAKE_BUILD_TYPE=MinSizeRel"
+    CMAKE_ARGS="${CMAKE_ARGS} -DWITH_BENCHMARKS=1"
+    export CFLAGS="-ffunction-sections -fdata-sections -fvisibility=hidden -fmerge-all-constants"
+    export CXXFLAGS="$CFLAGS"
+    export LDFLAGS="-Wl,--gc-sections"
+    ;;
   *-reldbg-*)
     CMAKE_ARGS="${CMAKE_ARGS} -DCMAKE_BUILD_TYPE=RelWithDebInfo"
     ;;
@@ -296,7 +303,10 @@ else
 
         $RUN_TESTS
       fi
+    fi
 
+    # for release and resize builds, strip the binaries
+    if [[ "-$BUILD_TYPE-" =~ -(release|relsize)- ]]; then
       $BUILD_TOOL strip
     fi
 

.github/workflows/build.yml

@@ -332,6 +332,18 @@ jobs:
           - arch: arm64v8
             dist: alpine
             build_type: clang-release-ninja-static
+          - arch: amd64
+            dist: alpine
+            build_type: gcc-relsize-ninja-static
+          - arch: arm64v8
+            dist: alpine
+            build_type: gcc-relsize-ninja-static
+          - arch: amd64
+            dist: alpine
+            build_type: clang-relsize-ninja-static
+          - arch: arm64v8
+            dist: alpine
+            build_type: clang-relsize-ninja-static
           - arch: amd64
             dist: alpine
             build_type: clang-reldbg-stacktrace-ninja-static

CMakeLists.txt

@@ -920,7 +920,7 @@ add_custom_target(
   USES_TERMINAL)
 
 if(STATIC_BUILD_DO_NOT_USE OR APPLE)
-  if(CMAKE_BUILD_TYPE STREQUAL "Release")
+  if(CMAKE_BUILD_TYPE MATCHES "Release|MinSizeRel")
     foreach(tgt ${BINARY_TARGETS})
       list(APPEND FILES_TO_STRIP $<TARGET_FILE:${tgt}>)
     endforeach()