(Issue 209, 275) Make library truly header-only (ZigRazor#276)

* Remove CXXGraphConfig.h.in dependency.

* Streamline graph rw

* Add missing public API methods

* Match the current version for some files

* Match up some more things

* More cleanup

* Get things building

* Fixup documentation

---------

Co-authored-by: Alberto Merino Risueño <[email protected]>

.gitignore

@@ -35,7 +35,5 @@
 build/
 # ignore the packaging folder contents from git
 packaging/
-# graph config is automatically setup, so we can ignore this
-include/CXXGraphConfig.h
 # ignore vscode files
 .vscode

benchmark/CMakeLists.txt

@@ -9,17 +9,47 @@ if(BENCHMARK)
     	GIT_TAG origin/main
 	)
 
-	FetchContent_MakeAvailable(googlebenchmark)
+	FetchContent_Declare(
+    openssl
+    GIT_REPOSITORY https://github.com/janbar/openssl-cmake.git
+    GIT_TAG origin/master
+    OPTIONS "WITH_APPS OFF"
+    )
+
+    FetchContent_Declare(
+    zlib
+    GIT_REPOSITORY https://github.com/madler/zlib.git
+    GIT_TAG v1.2.13
+    OPTIONS "CMAKE_POSITION_INDEPENDENT_CODE True"
+    )
+
+	set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+    FetchContent_MakeAvailable(googletest)
+
+    set(WITH_APPS OFF CACHE BOOL "" FORCE)
+    FetchContent_MakeAvailable(openssl)
+
+    set(SAVE_CMAKE_POSITION_INDEPENDENT_CODE ${CMAKE_POSITION_INDEPENDENT_CODE})
+    set(CMAKE_POSITION_INDEPENDENT_CODE True)
+    FetchContent_MakeAvailable(zlib)
+    set(CMAKE_POSITION_INDEPENDENT_CODE ${SAVE_CMAKE_POSITION_INDEPENDENT_CODE})
 
 	file (GLOB BENCHMARK_FILES "*.cpp" "*.hpp")
 	add_executable(benchmark_exe ${BENCHMARK_FILES})
+
+	target_compile_definitions(benchmark_exe 
+		PUBLIC WITH_COMPRESSION
+	)
 	target_include_directories(benchmark_exe PUBLIC
-						  "${PROJECT_SOURCE_DIR}/include"
-						  )
+		PUBLIC "${PROJECT_SOURCE_DIR}/include"
+		PUBLIC ${zlib_BINARY_DIR}
+		PUBLIC ${zlib_SOURCE_DIR}
+		PUBLIC ${openssl_SOURCE_DIR}/include
+	)
 	target_link_libraries(benchmark_exe
-						benchmark::benchmark
-					   pthread
-					   ssl
-					   crypto
-					   z)
+		PUBLIC benchmark::benchmark
+		PUBLIC pthread
+		PUBLIC ssl
+		PUBLIC crypto
+		PUBLIC zlibstatic)
 endif(BENCHMARK)

include/CXXGraphConfig.h

@@ -0,0 +1,4 @@
+// the configured options and settings for CXXGraph
+#define CXXGraph_VERSION_MAJOR 1
+#define CXXGraph_VERSION_MINOR 0
+#define CXXGraph_VERSION_PATCH 0