Add CMakeLists.txt and compatibility header for MSVC

CMakeLists.txt

@@ -0,0 +1,27 @@
+cmake_minimum_required(VERSION 2.8.7)
+project(unibilium LANGUAGES C)
+
+file(GLOB SRC_FILES ${PROJECT_SOURCE_DIR}/*.c)
+add_library(unibilium ${SRC_FILES})
+set_target_properties(unibilium PROPERTIES PUBLIC_HEADER ${PROJECT_SOURCE_DIR}/unibilium.h
+  VERSION "${VERSION_MAJOR}.${VERSION_MINOR}")
+
+if(NOT WIN32)
+  execute_process(COMMAND "shell ncursesw6-config --terminfo-dirs 2>/dev/null || \
+      ncurses6-config  --terminfo-dirs 2>/dev/null || \
+      ncursesw5-config --terminfo-dirs 2>/dev/null || \
+      ncurses5-config  --terminfo-dirs 2>/dev/null || \
+      echo '/etc/terminfo:/lib/terminfo:/usr/share/terminfo:/usr/lib/terminfo:/usr/local/share/terminfo:/usr/local/lib/terminfo'"
+    OUTPUT_VARIABLE TERMINFO_DIRS)
+endif()
+target_compile_definitions(unibilium PUBLIC TERMINFO_DIRS ${TERMINFO_DIRS})
+
+if(MSVC)
+  target_include_directories(unibilium PUBLIC ${PROJECT_SOURCE_DIR}/msvc-compat)
+endif()
+
+include(GNUInstallDirs)
+install(TARGETS unibilium
+  PUBLIC_HEADER
+  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

msvc-compat/unistd.h

@@ -0,0 +1,7 @@
+#ifndef GUARD_UNIBILIUM_UNISTD_H_
+#define GUARD_UNIBILIUM_UNISTD_H_
+
+#include <BaseTsd.h>
+typedef SSIZE_T ssize_t;
+
+#endif