fix makefile

CMakeLists.txt

@@ -98,7 +98,7 @@ set(THREADS_PREFER_PTHREAD_FLAG)
 find_package(Threads)
 find_package(libmcfp QUIET)
 
-if(NOT libmcfp_FOUND)
+if(NOT (libmcfp_FOUND OR TARGET libmcfp))
 	include(FetchContent)
 
 	if(CMAKE_VERSION GREATER_EQUAL 3.28)
@@ -114,9 +114,10 @@ if(NOT libmcfp_FOUND)
 	FetchContent_MakeAvailable(libmcfp)
 endif()
 
-find_package(cifpp 7 QUIET)
+if(NOT TARGET cifpp AND NOT cifpp_FOUND)
+	find_package(cifpp 7 QUIET)
 
-if(NOT cifpp_FOUND)
+	if(NOT cifpp_FOUND)
 		set(CIFPP_DOWNLOAD_CCD OFF)
 
 		FetchContent_Declare(
@@ -127,6 +128,7 @@ if(NOT cifpp_FOUND)
 		)
 
 		FetchContent_MakeAvailable(cifpp)
+	endif()
 endif()
 
 add_subdirectory(libdssp)

libdssp/src/dssp-io.cpp

@@ -157,7 +157,7 @@ void writeDSSP(const dssp &dssp, std::ostream &os)
 	std::time_t today = system_clock::to_time_t(system_clock::now());
 	std::tm *tm = std::gmtime(&today);
 
-	std::string version = kVersionNumber;
+	std::string version = klibdsspVersionNumber;
 	if (version.length() < 10)
 		version.insert(version.end(), 10 - version.length(), ' ');
 
@@ -877,8 +877,8 @@ void annotateDSSP(cif::datablock &db, const dssp &dssp, bool writeOther, bool wr
 	software.emplace({
 		{ "pdbx_ordinal", software.get_unique_id("") },
 		{ "name", "dssp" },
-		{ "version", kVersionNumber },
-		{ "date", kRevisionDate },
+		{ "version", klibdsspVersionNumber },
+		{ "date", klibdsspRevisionDate },
 		{ "classification", "model annotation" }
 	});
 }

test/CMakeLists.txt

-find_package(Catch2 QUIET)
+if(NOT(Catch2_FOUND OR TARGET Catch2))
+	find_package(Catch2 QUIET)
 
-if(NOT Catch2_FOUND)
+	if(NOT Catch2_FOUND)
 		include(FetchContent)
 
 		FetchContent_Declare(
@@ -11,6 +12,7 @@ if(NOT Catch2_FOUND)
 		FetchContent_MakeAvailable(Catch2)
 
 		set(Catch2_VERSION "2.13.9")
+	endif()
 endif()
 
 add_executable(unit-test-dssp ${CMAKE_CURRENT_SOURCE_DIR}/unit-test-dssp.cpp ${PROJECT_SOURCE_DIR}/libdssp/src/dssp-io.cpp)