我正在 Windows 上使用 MSYS 构建 Cairo 1.12.14。
使用 --enable-gl=yes 成功配置，但是，当我运行 make 时，我收到以下错误：
make all-recursive
make[1]: Entering directory `/c/Users/Nathan/BuildCairo/cairo'
Making all in src
make[2]: Entering directory `/c/Users/Nathan/BuildCairo/cairo/src'
make all-am
make[3]: Entering directory `/c/Users/Nathan/BuildCairo/cairo/src'
CC cairo-png.lo
CC cairo-gl-composite.lo
In file included from cairo-gl-composite.c:48:0:
cairo-gl-private.h:250:40: error: unknown type name 'GLsizeiptr'
cairo-gl-private.h:258:8: error: unknown type name 'GLchar'
cairo-gl-private.h:262:22: error: unknown type name 'GLchar'
cairo-gl-private.h:273:23: error: unknown type name 'GLchar'
cairo-gl-private.h:276:5: error: unknown type name 'GLchar'
cairo-gl-private.h:290:5: error: unknown type name 'GLchar'
cairo-gl-composite.c: In function '_cairo_gl_texture_set_extend':
cairo-gl-composite.c:193:18: error: 'GL_MIRRORED_REPEAT' undeclared (first use i
n this function)
cairo-gl-composite.c:193:18: note: each undeclared identifier is reported only o
nce for each function it appears in
cairo-gl-composite.c: In function '_cairo_gl_set_operator':
cairo-gl-composite.c:387:9: error: implicit declaration of function 'glBlendFunc
Separate' [-Werror=implicit-function-declaration]
cairo-gl-composite.c:387:9: warning: nested extern declaration of 'glBlendFuncSe
parate' [-Wnested-externs]
cairo-gl-composite.c: In function '_cairo_gl_composite_begin':
cairo-gl-composite.c:751:41: warning: ignoring return value of '_cairo_gl_set_op
erands_and_operator', declared with attribute warn_unused_result [-Wunused-resul
t]
cc1.exe: some warnings being treated as errors
make[3]: *** [cairo-gl-composite.lo] Error 1
make[3]: Leaving directory `/c/Users/Nathan/BuildCairo/cairo/src'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/c/Users/Nathan/BuildCairo/cairo/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/c/Users/Nathan/BuildCairo/cairo'
make: *** [all] Error 2
有任何想法吗？配置有这样说：
--- The OpenGL surface backend feature is still under active development and
--- is included in this release only as a preview. It does NOT fully work yet
--- and incompatible changes may yet be made to OpenGL surface backend
--- specific API.
这个版本可以解决这个问题吗？