Add CMake Config-file package

.github/workflows/cmake.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Build
       run: |
         mkdir build
-        cmake -S . -B build -DBUILD_SHARED_LIBS=${{ matrix.shared }} -DUTF8PROC_ENABLE_TESTING=ON
+        cmake -S . -B build -DBUILD_SHARED_LIBS=${{ matrix.shared }} -DUTF8PROC_ENABLE_TESTING=ON -DCMAKE_INSTALL_PREFIX=tmp/install
         cmake --build build
     - name: Run Test
       run: ctest --test-dir build -V
@@ -33,6 +33,21 @@ jobs:
         path: |
           build/libutf8proc.*
           build/Debug/utf8proc.*
+    - name: Test Consuming (Windows)
+      if: runner.os == 'Windows'
+      run: |
+        cmake --install build --config Debug
+        cmake -S test/app -B test/app/build -DCMAKE_INSTALL_PREFIX=tmp/install
+        cmake --build test/app/build
+        $Env:PATH = "$PWD\tmp\install\bin;$Env:PATH"
+        test/app/build/Debug/app.exe
+    - name: Test Consuming (Unix)
+      if: runner.os != 'Windows'
+      run: |
+        cmake --install build
+        cmake -S test/app -B test/app/build -DCMAKE_INSTALL_PREFIX=tmp/install
+        cmake --build test/app/build
+        test/app/build/app
 
   mingw:
     strategy:
@@ -52,7 +67,7 @@ jobs:
     - name: Build
       run: |
         mkdir build
-        cmake -S . -B build -DBUILD_SHARED_LIBS=${{ matrix.shared }} -DUTF8PROC_ENABLE_TESTING=ON -G'MSYS Makefiles'
+        cmake -S . -B build -DBUILD_SHARED_LIBS=${{ matrix.shared }} -DUTF8PROC_ENABLE_TESTING=ON -G'MSYS Makefiles' -DCMAKE_INSTALL_PREFIX=tmp/install
         cmake --build build
     - name: Run Test
       run: ctest --test-dir build -V
@@ -62,3 +77,10 @@ jobs:
       with:
         name: windows-mingw64
         path: build/libutf8proc.*
+    - name: Test Consuming
+      run: |
+        cmake --install build
+        cmake -S test/app -B test/app/build -DCMAKE_INSTALL_PREFIX=tmp/install -G'MSYS Makefiles'
+        cmake --build test/app/build
+        PATH="$(pwd)/tmp/install/bin:$PATH"
+        test/app/build/app.exe

CMakeLists.txt

@@ -24,7 +24,7 @@ add_library (utf8proc
 )
 
 # expose header path, for when this is part of a larger cmake project
-target_include_directories(utf8proc PUBLIC .)
+target_include_directories(utf8proc PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}> $<INSTALL_INTERFACE:include>)
 
 if (BUILD_SHARED_LIBS)
   # Building shared library
@@ -53,14 +53,33 @@ set_target_properties (utf8proc PROPERTIES
 
 if (UTF8PROC_INSTALL)
   include(GNUInstallDirs)
-  install(FILES utf8proc.h DESTINATION "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+  install(FILES utf8proc.h DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
   install(TARGETS utf8proc
-    ARCHIVE DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}"
-    LIBRARY DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}"
-    RUNTIME DESTINATION "${CMAKE_INSTALL_FULL_BINDIR}"
+    EXPORT utf8proc-targets
+    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
   )
   configure_file(libutf8proc.pc.cmakein libutf8proc.pc @ONLY)
-  install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libutf8proc.pc" DESTINATION "${CMAKE_INSTALL_FULL_LIBDIR}/pkgconfig")
+  install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libutf8proc.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+  # Install CMake targets file.
+  install(EXPORT utf8proc-targets FILE utf8proc-targets.cmake DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/utf8proc" NAMESPACE utf8proc::)
+  include(CMakePackageConfigHelpers)
+  configure_package_config_file(
+    "${CMAKE_CURRENT_SOURCE_DIR}/cmake/utf8proc-config.cmake.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/utf8proc-config.cmake"
+    INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/utf8proc"
+    NO_SET_AND_CHECK_MACRO
+  )
+  write_basic_package_version_file(
+    "${CMAKE_CURRENT_BINARY_DIR}/utf8proc-config-version.cmake"
+    COMPATIBILITY SameMajorVersion
+  )
+  install(FILES
+    "${CMAKE_CURRENT_BINARY_DIR}/utf8proc-config.cmake"
+    "${CMAKE_CURRENT_BINARY_DIR}/utf8proc-config-version.cmake"
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/utf8proc"
+  )
 endif()
 
 if(UTF8PROC_ENABLE_TESTING)

README.md

@@ -53,6 +53,16 @@ gmake CC=/opt/aCC/bin/aCC CFLAGS="+O2" PICFLAG="+z" C99FLAG="-Ae" WCFLAGS="+w" L
 ```
 To run `gmake install` you will need GNU coreutils for the `install` command, and you may want to pass `prefix=/opt libdir=/opt/lib/hpux32` or similar to change the installation location.
 
+### Using with CMake
+
+A CMake Config-file package is provided. To use utf8proc in a CMake project:
+
+```cmake
+add_executable (app app.c)
+find_package (utf8proc 2.9.0 REQUIRED)
+target_link_libraries (app PRIVATE utf8proc::utf8proc)
+```
+
 ## General Information
 
 The C library is found in this directory after successful compilation

cmake/utf8proc-config.cmake.in

@@ -0,0 +1,5 @@
+@PACKAGE_INIT@
+include("${CMAKE_CURRENT_LIST_DIR}/utf8proc-targets.cmake")
+# `check_required_components` is used to ensure consumer did not erroneously request components.
+# No components are currently defined.
+check_required_components(utf8proc)

test/app/CMakeLists.txt

@@ -0,0 +1,6 @@
+# This is a test app to test consuming utf8proc with CMake.
+cmake_minimum_required(VERSION 3.16)
+project(utf8proc-test)
+find_package(utf8proc REQUIRED)
+add_executable(app app.c)
+target_link_libraries(app utf8proc::utf8proc)

test/app/app.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+#include <utf8proc.h>
+
+int
+main(void)
+{
+  printf("%s\n", utf8proc_version());
+  return 0;
+}