Add minimal CMake build files

CMakeLists.txt

@@ -0,0 +1,45 @@
+cmake_minimum_required(VERSION 3.16)
+
+project(sj3 VERSION 2.0.99 LANGUAGES C)
+
+include(CheckCSourceCompiles)
+
+if(NOT DEFINED CMAKE_C_STANDARD)
+	set(CMAKE_C_STANDARD 90)
+endif()
+set(CMAKE_C_STANDARD_REQUIRED ON)
+set(CMAKE_C_EXTENSIONS OFF)
+
+set(SJ3CONFDIR "/etc/sj3" CACHE PATH "SJ3 configuration directory")
+set(SJ3DICTDIR "${CMAKE_INSTALL_PREFIX}/share/sj3/dict" CACHE PATH
+	"SJ3 dictionary directory")
+
+check_c_source_compiles("
+#if !defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L)
+# error C99 required
+#endif
+#include <stdint.h>
+int main(void) {
+	uint8_t u8 = 0;
+	uint16_t u16 = 0;
+	uint32_t u32 = 0;
+	uint64_t u64 = 0;
+	return (int)(u8 + u16 + u32 + u64);
+}
+" HAVE_C99_STDINT)
+
+configure_file(config.h.cmake config.h @ONLY)
+configure_file(Paths.h.in Paths.h @ONLY)
+
+add_library(sj3types INTERFACE)
+target_include_directories(sj3types INTERFACE
+	${CMAKE_CURRENT_SOURCE_DIR}
+	${CMAKE_CURRENT_BINARY_DIR}
+)
+
+add_library(sj3_core_types OBJECT
+	wc16_str.c
+	string.c
+	string2.c
+)
+target_link_libraries(sj3_core_types PRIVATE sj3types)

config.h.cmake

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+#ifndef OCONFIGURE_CONFIG_H
+#define OCONFIGURE_CONFIG_H
+
+#cmakedefine01 HAVE_C99_STDINT
+
+#ifndef HAVE_MD5
+# define HAVE_MD5 1
+#endif
+#ifndef HAVE_SHA2
+# define HAVE_SHA2 1
+#endif
+
+#endif /* OCONFIGURE_CONFIG_H */