Add pkg-config file declaring Abseil dependency of utf8_range

See protocolbuffers/protobuf#12439 for more information

PiperOrigin-RevId: 525796488

Author: mkruskal-google

.github/workflows/bazel_tests.yml

@@ -29,8 +29,15 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      - name: Setup Bazel
+        run: |
+          echo "BAZEL=bazel" >> $GITHUB_ENV
+          echo "USE_BAZEL_VERSION=5.1.1" >> $GITHUB_ENV
+      - name: Setup Bazel (macOS)
+        if: runner.os == 'macOS'
+        run: echo "BAZEL=bazelisk" >> $GITHUB_ENV
       - name: Install dependencies
         run: sudo apt update && sudo apt install -y ${{ matrix.install }}
         if: matrix.install != ''
       - name: Run tests
-        run: cd ${{ github.workspace }} && CC=${{ matrix.CC }} bazel test --test_output=errors ... ${{ matrix.flags }}
+        run: cd ${{ github.workspace }} && CC=${{ matrix.CC }} ${{ env.BAZEL }} test --test_output=errors ... ${{ matrix.flags }}

CMakeLists.txt

@@ -73,6 +73,11 @@ if (utf8_range_ENABLE_INSTALL)
   install(FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
     DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
   )
+  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/utf8_range.pc.cmake
+                 ${CMAKE_CURRENT_BINARY_DIR}/utf8_range.pc @ONLY)
+  install(
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/utf8_range.pc
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
 
   # Install public headers explicitly.
   install(FILES utf8_range.h utf8_validity.h

cmake/utf8_range.pc.cmake

@@ -0,0 +1,12 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=@CMAKE_INSTALL_PREFIX@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
+
+Name: UTF8 Range
+Description: Google's UTF8 Library
+Version: 1.0
+Requires: absl_strings
+Libs: -L${libdir} -lprotobuf-lite @CMAKE_THREAD_LIBS_INIT@
+Cflags: -I${includedir}
+Conflicts: protobuf