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(define-module (sdl2 config)
#:use-module (ice-9 match)
#:use-module (system foreign)
#:export (dynamic-link*
%libsdl2
%libsdl2-image
%libsdl2-ttf
%libsdl2-mixer))
;; Try to link against multiple library possibilities, such as the
;; absolute file name discovered by ./configure or by searching the
;; library load path as a fallback method. Useful when restributing
;; relocatable builds.
(define (dynamic-link* names)
(let loop ((names names))
(match names
(()
(error "could not find library" names))
((name . rest)
(or (false-if-exception (dynamic-link name))
(loop rest))))))
;; Special case Windows since the DLL names are different. Performing
;; this check at runtime allows a Linux machine to cross-compile
;; guile-sdl2 for a Windows target.
(define %windows? (string-prefix? "Windows" (utsname:sysname (uname))))
(define %libsdl2
(if %windows?
'("SDL2")
'("@SDL2_LIBDIR@/libSDL2" "libSDL2")))
(define %libsdl2-image
(if %windows?
'("SDL2_image")
'("@SDL2_IMAGE_LIBDIR@/libSDL2_image" "libSDL2_image")))
(define %libsdl2-ttf
(if %windows?
'("SDL2_ttf")
'("@SDL2_TTF_LIBDIR@/libSDL2_ttf" "libSDL2_ttf")))
(define %libsdl2-mixer
(if %windows?
'("SDL2_mixer")
'("@SDL2_MIXER_LIBDIR@/libSDL2_mixer" "libSDL2_mixer")))
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