Move sha256.c to lib/

Precompiled headers don't work if we're not a pure C++ project.

CMakeLists.txt

@@ -277,6 +277,7 @@ find_package(Lua REQUIRED)
 if(NOT USE_LUAJIT)
 	add_subdirectory(lib/bitop)
 endif()
+add_subdirectory(lib/sha256)
 
 if(BUILD_UNITTESTS OR BUILD_BENCHMARKS)
 	add_subdirectory(lib/catch2)

lib/sha256/CMakeLists.txt

@@ -0,0 +1,14 @@
+project(sha256 C)
+
+add_library(sha256 STATIC sha256.c)
+
+target_include_directories(sha256 INTERFACE .)
+
+INCLUDE(CheckIncludeFiles)
+check_include_files(endian.h HAVE_ENDIAN_H)
+
+configure_file(
+	"${PROJECT_SOURCE_DIR}/cmake_config.h.in"
+	"${PROJECT_BINARY_DIR}/cmake_config.h"
+)
+target_include_directories(sha256 PRIVATE "${PROJECT_BINARY_DIR}")

lib/sha256/cmake_config.h.in

@@ -0,0 +1,5 @@
+// Filled in by the build system
+
+#pragma once
+
+#cmakedefine HAVE_ENDIAN_H

lib/sha256/sha256.c

@@ -56,17 +56,13 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "util/sha256.h"
+#include "sha256/sha256.h"
 
 #if defined(_MSC_VER) && !defined(__clang__) && !defined(__attribute__)
 #define __attribute__(a)
 #endif
 
-/* pull HAVE_ENDIAN_H from Minetest */
-#include "config.h"
-#if !HAVE_ENDIAN_H
-#undef HAVE_ENDIAN_H
-#endif
+#include "cmake_config.h" /* HAVE_ENDIAN_H */
 
 /** endian.h **/
 /*

src/CMakeLists.txt

@@ -565,6 +565,7 @@ if(BUILD_CLIENT)
 		${GMP_LIBRARY}
 		${JSON_LIBRARY}
 		${LUA_BIT_LIBRARY}
+		sha256
 		${FREETYPE_LIBRARY}
 		${PLATFORM_LIBS}
 		# on Android, Minetest depends on SDL2 directly
@@ -637,6 +638,7 @@ if(BUILD_SERVER)
 		${JSON_LIBRARY}
 		${LUA_LIBRARY}
 		${LUA_BIT_LIBRARY}
+		sha256
 		${GMP_LIBRARY}
 		${PLATFORM_LIBS}
 	)

src/script/lua_api/l_util.cpp

@@ -42,7 +42,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "version.h"
 #include "util/hex.h"
 #include "util/sha1.h"
-#include "util/sha256.h"
+#include <sha256/sha256.h>
 #include "util/png.h"
 #include <cstdio>
 
@@ -573,7 +573,7 @@ int ModApiUtil::l_sha256(lua_State *L)
 
 	auto data = readParam<std::string_view>(L, 1);
 	bool hex = !lua_isboolean(L, 2) || !readParam<bool>(L, 2);
-	
+
 	std::string data_sha256;
 	data_sha256.resize(SHA256_DIGEST_LENGTH);
 	SHA256(reinterpret_cast<const unsigned char*>(data.data()), data.size(),

src/util/CMakeLists.txt

@@ -13,7 +13,6 @@ set(UTIL_SRCS
 	${CMAKE_CURRENT_SOURCE_DIR}/quicktune.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/serialize.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/sha1.cpp
-	${CMAKE_CURRENT_SOURCE_DIR}/sha256.c
 	${CMAKE_CURRENT_SOURCE_DIR}/string.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/srp.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/timetaker.cpp

src/util/srp.cpp

@@ -50,7 +50,7 @@
 	#include <mini-gmp.h>
 #endif
 
-#include "util/sha256.h"
+#include <sha256/sha256.h>
 
 #include "srp.h"
 //#define CSRP_USE_SHA1