CMake: Add option to use system fmt library

.github/workflows/build.yml

@@ -33,7 +33,9 @@ jobs:
       - name: build & install
         run: |
           mkdir build && cd build
-          cmake ..
+          cmake \
+            -DANDROID_TOOLS_USE_BUNDLED_FMT=ON \
+            ..
           make package_source
           for x in sha1sum sha256sum sha512sum b2sum; do
             printf "$x " && $x ${{ github.workspace }}/build/android-tools-*.tar.xz | cut -d " " -f 1
@@ -140,7 +142,13 @@ jobs:
           test -n "${{ matrix.env1 }}" && export ${{ matrix.env1 }}
           test -n "${{ matrix.env2 }}" && export ${{ matrix.env2 }}
           mkdir build && cd build
-          cmake -DCMAKE_C_FLAGS="$CFLAGS" -DCMAKE_CXX_FLAGS="$CXXFLAGS" -DCMAKE_BUILD_TYPE=Release -GNinja ..
+          cmake \
+            -DCMAKE_C_FLAGS="$CFLAGS" \
+            -DCMAKE_CXX_FLAGS="$CXXFLAGS" \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DANDROID_TOOLS_USE_BUNDLED_FMT=ON \
+            -GNinja \
+            ..
           ninja --verbose
           echo -e "\n### make install ###\n"
           cmake --install . --prefix /usr/local
@@ -184,8 +192,14 @@ jobs:
           tar -xf android-tools-*.tar.xz
           cd android-tools-*/
           mkdir build && cd build
-          cmake -DCMAKE_C_FLAGS="$CFLAGS" -DCMAKE_CXX_FLAGS="$CXXFLAGS" -DCMAKE_BUILD_TYPE=Release \
-            -DCMAKE_INSTALL_PREFIX=$HOME/android-tools -GNinja ..
+          cmake \
+            -DCMAKE_C_FLAGS="$CFLAGS" \
+            -DCMAKE_CXX_FLAGS="$CXXFLAGS" \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_INSTALL_PREFIX=$HOME/android-tools \
+            -DANDROID_TOOLS_USE_BUNDLED_FMT=ON \
+            -GNinja \
+            ..
           ninja --verbose
           echo -e "\n### make install ###\n"
           cmake --install .

CMakeLists.txt

@@ -9,6 +9,7 @@ include(GNUInstallDirs)
 # This helps to build vendor projects with or without any patching. Also if any
 # files are changed in vendor projects those can be retained with this option.
 option(ANDROID_TOOLS_PATCH_VENDOR "Patch vendor projects using patches directory" ON)
+option(ANDROID_TOOLS_USE_BUNDLED_FMT "Use bundled fmt library instead of system provided one" OFF)
 
 # Install bash/zsh completion files.
 set(COMPLETION_COMMON_DIR "${CMAKE_INSTALL_FULL_DATADIR}/android-tools/completions")

vendor/CMakeLists.txt

@@ -75,7 +75,13 @@ if(ANDROID_TOOLS_PATCH_VENDOR AND EXISTS "${ANDROID_PATCH_DIR}/")
 endif()
 
 add_subdirectory(boringssl EXCLUDE_FROM_ALL)
-add_subdirectory(fmtlib EXCLUDE_FROM_ALL)
+
+if(ANDROID_TOOLS_USE_BUNDLED_FMT)
+	add_subdirectory(fmtlib EXCLUDE_FROM_ALL)
+else()
+	find_package(fmt CONFIG REQUIRED)
+	message(STATUS "Found fmt: ${fmt_DIR} (version ${fmt_VERSION})")
+endif()
 
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(libbrotlicommon REQUIRED IMPORTED_TARGET libbrotlicommon)