build: do a real non-size-optimized LTO build

.docker/build-linux.sh

@@ -139,6 +139,7 @@ case "-$BUILD_TYPE-" in
       export CXXFLAGS="${CFLAGS}"
       export LDFLAGS="-Wl,--gc-sections"
     fi
+    export COMPILER="${COMPILER}-minsize"
     ;;
   *-reldbg-*)
     CMAKE_ARGS="${CMAKE_ARGS} -DCMAKE_BUILD_TYPE=RelWithDebInfo"

.docker/install-static-libs.sh

@@ -37,11 +37,9 @@ if [[ "$PKGS" == ":ubuntu" ]]; then
     COMPILERS="clang gcc"
 elif [[ "$PKGS" == ":alpine" ]]; then
     PKGS="benchmark,brotli,cpptrace,double-conversion,flac,fmt,fuse,glog,libarchive,lz4,openssl,xxhash,zstd"
-    export CLANG_OPTIMIZE="-Os"
-    export GCC_OPTIMIZE="-O2" # gcc -Os is painfully slow
     export COMMON_CFLAGS="-ffunction-sections -fdata-sections -fmerge-all-constants"
     export COMMON_CXXFLAGS="$COMMON_CFLAGS"
-    COMPILERS="clang gcc clang-lto gcc-lto"
+    COMPILERS="clang clang-lto clang-minsize-lto gcc"
 elif [[ "$PKGS" == ":none" ]]; then
     echo "No libraries to build"
     exit 0
@@ -123,18 +121,10 @@ for COMPILER in $COMPILERS; do
         clang*)
             export CC="$CLANG"
             export CXX="${CLANG/clang/clang++}"
-            if [[ -n "$CLANG_OPTIMIZE" ]]; then
-                export CFLAGS="$CFLAGS $CLANG_OPTIMIZE"
-                export CXXFLAGS="$CXXFLAGS $CLANG_OPTIMIZE"
-            fi
             ;;
         gcc*)
             export CC="$GCC"
             export CXX="${GCC/gcc/g++}"
-            if [[ -n "$GCC_OPTIMIZE" ]]; then
-                export CFLAGS="$CFLAGS $GCC_OPTIMIZE"
-                export CXXFLAGS="$CXXFLAGS $GCC_OPTIMIZE"
-            fi
             ;;
         *)
             echo "Unknown compiler: $COMPILER"
@@ -142,6 +132,13 @@ for COMPILER in $COMPILERS; do
             ;;
     esac
 
+    case "-$COMPILER-" in
+        *-minsize-*)
+            export CFLAGS="$CFLAGS -Os"
+            export CXXFLAGS="$CXXFLAGS -Os"
+            ;;
+    esac
+
     case "$COMPILER" in
         *-lto)
             export CFLAGS="$CFLAGS -flto"

.github/workflows/build.yml

@@ -332,12 +332,12 @@ jobs:
           - arch: arm64v8
             dist: alpine
             build_type: clang-release-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-relsize-ninja-static
+          # - arch: arm64v8
+          #   dist: alpine
+          #   build_type: clang-relsize-ninja-static
           # - arch: amd64
           #   dist: alpine
           #   build_type: gcc-release-lto-ninja-static