[conan] Fix the Conan package for multiple static library use

.conan/build.py

@@ -49,7 +49,7 @@ def stable_branch_pattern(self):
     def reference(self):
         """ Read project version from branch create Conan reference
         """
-        return os.getenv("CONAN_REFERENCE", "Catch2/{}".format(self._version))
+        return os.getenv("CONAN_REFERENCE", "catch2/{}".format(self._version))
 
     @property
     def channel(self):

.conan/test_package/CMakeLists.txt

@@ -1,11 +1,19 @@
 cmake_minimum_required(VERSION 3.2.0)
 project(test_package CXX)
 
-include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
-conan_basic_setup(TARGETS)
+# We set it only for the convenience of calling the executable
+# in the package test function
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELWITHDEBINFO ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_MINSIZEREL ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
 
 find_package(Catch2 REQUIRED CONFIG)
 
 add_executable(${PROJECT_NAME} test_package.cpp)
-target_link_libraries(${PROJECT_NAME} CONAN_PKG::Catch2Main)
+# Note: Conan 1.21 doesn't support granular target generation yet.
+# The Main library would be included into the unified target.
+# It's controlled by the `with_main` option in the recipe.
+target_link_libraries(${PROJECT_NAME} Catch2::Catch2)
 set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 14)

.conan/test_package/conanfile.py

@@ -6,14 +6,14 @@
 
 class TestPackageConan(ConanFile):
     settings = "os", "compiler", "build_type", "arch"
-    generators = "cmake"
+    generators = "cmake_find_package_multi"
 
     def build(self):
         cmake = CMake(self)
         cmake.configure()
         cmake.build()
 
     def test(self):
-        assert os.path.isfile(os.path.join(self.deps_cpp_info["Catch2"].rootpath, "licenses", "LICENSE.txt"))
+        assert os.path.isfile(os.path.join(self.deps_cpp_info["catch2"].rootpath, "licenses", "LICENSE.txt"))
         bin_path = os.path.join("bin", "test_package")
         self.run("%s -s" % bin_path, run_environment=True)

conanfile.py

@@ -3,16 +3,20 @@
 
 
 class CatchConan(ConanFile):
-    name = "Catch2"
-    description = "A modern, C++-native, header-only, framework for unit-tests, TDD and BDD"
+    name = "catch2"
+    description = "A modern, C++-native, framework for unit-tests, TDD and BDD"
     topics = ("conan", "catch2", "unit-test", "tdd", "bdd")
     url = "https://github.com/catchorg/Catch2"
     homepage = url
     license = "BSL-1.0"
+
     exports = "LICENSE.txt"
     exports_sources = ("src/*", "CMakeLists.txt", "CMake/*", "extras/*")
+
     settings = "os", "compiler", "build_type", "arch"
-    generators = "cmake"
+
+    options = {"with_main": [True, False]}
+    default_options = {"with_main": True}
 
     def _configure_cmake(self):
         cmake = CMake(self)
@@ -31,7 +35,11 @@ def package(self):
         cmake = self._configure_cmake()
         cmake.install()
 
+    def package_id(self):
+        del self.info.options.with_main
+
     def package_info(self):
-        self.cpp_info.libs = ['Catch2Main', 'Catch2']
+        self.cpp_info.libs = [
+            'Catch2Main', 'Catch2'] if self.options.with_main else ['Catch2']
         self.cpp_info.names["cmake_find_package"] = "Catch2"
         self.cpp_info.names["cmake_find_package_multi"] = "Catch2"