fix: trying to fix compilation on Windows

CMakeLists.txt

@@ -38,6 +38,7 @@ endif()
 
 # Check for headers and symbols
 check_include_file("getopt.h" HAVE_GETOPT_H)
+check_include_file("libintl.h" HAVE_LIBINTL_H)
 check_symbol_exists(isatty unistd.h HAVE_ISATTY)
 
 # Turn on all compiler warnings
@@ -65,6 +66,10 @@ add_executable(stitch ${STITCH_SOURCES})
 target_include_directories(stitch PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src ${CURL_INCLUDE_DIRS})
 target_link_libraries(stitch ${MATH_LIBRARY} CURL::libcurl)
 
+if(WIN32)
+	add_compile_definitions(_USE_MATH_DEFINES)
+endif()
+
 if(JPEG_FOUND)
 	target_link_libraries(stitch JPEG::JPEG)
 endif()

src/getopt.c

@@ -1,3 +1,5 @@
+#include "config.h"
+
 /* Getopt for GNU.
 NOTE: getopt is now part of the C library, so if you don't know what
 "Keep this file name-space clean" means, talk to [email protected]