<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 13-12-08 03:51 PM, <a class="moz-txt-link-abbreviated" href="mailto:davyaxel@free.fr">davyaxel@free.fr</a> wrote: </div> <blockquote cite="mid:1683946033.605810807.1386535901212.JavaMail.root@zimbra26-e5.priv.proxad.net" type="cite"> <pre wrap="">I've searched, and it should do to check if "EGL_KHR_image", "EGL_KHR_gl_texture_2D_image" and "EGL_EXT_image_dma_buf_import" are defined. Those should be defined in <EGL/eglext.h>. </pre> </blockquote> The <EGL/eglext.h> header is include in the "egl" software package. This is the code to add to configure.ac to check for the 3 symbols which should be added after the PKG_CHECK_MODULES for EGL. <blockquote><tt>SAVE_CFLAGS=$CFLAGS CFLAGS="$EGL_CFLAGS" AC_CHECK_DECLS([EGL_KHR_image, EGL_KHR_gl_texture_2D_image, EGL_EXT_image_dma_buf_import], [], [],[ AC_INCLUDES_DEFAULT #include <EGL/egl.h> #include <EGL/eglext.h> ]) CFLAGS=$SAVE_CFLAGS</tt> </blockquote> When you run ./autogen.sh, a new ./configure script is created which includes a short C program to test if the symbols are declared. Running the new script yields this output: <blockquote><tt>checking whether EGL_KHR_image is declared... yes</tt><tt> </tt><tt>checking whether EGL_KHR_gl_texture_2D_image is declared... yes</tt><tt> </tt><tt>checking whether EGL_EXT_image_dma_buf_import is declared... yes</tt><tt> </tt></blockquote> New #defines have also been added in config.h: <blockquote><tt>/* Define to 1 if you have the declaration of `EGL_EXT_image_dma_buf_import',</tt><tt> </tt><tt> and to 0 if you don't. */</tt><tt> </tt><tt>#define HAVE_DECL_EGL_EXT_IMAGE_DMA_BUF_IMPORT 1</tt><tt> </tt><tt> </tt><tt>/* Define to 1 if you have the declaration of `EGL_KHR_gl_texture_2D_image',</tt><tt> </tt><tt> and to 0 if you don't. */</tt><tt> </tt><tt>#define HAVE_DECL_EGL_KHR_GL_TEXTURE_2D_IMAGE 1</tt><tt> </tt><tt> </tt><tt>/* Define to 1 if you have the declaration of `EGL_KHR_image', and to 0 if you</tt><tt> </tt><tt> don't. */</tt><tt> </tt><tt>#define HAVE_DECL_EGL_KHR_IMAGE 1</tt><tt> </tt></blockquote> Should the C test program fails when running ./configure, the compiler output and the program listing is written in config.log. Have a go at it and experiment. See if this will help you write conditional around the egl extension. Skipping the includes, this is the short C program: <blockquote><tt> int</tt><tt> </tt><tt> main ()</tt><tt> </tt><tt> {</tt><tt> </tt><tt> #ifndef EGL_KHR_image</tt><tt> </tt><tt> #ifdef __cplusplus</tt><tt> </tt><tt> (void) EGL_KHR_image;</tt><tt> </tt><tt> #else</tt><tt> </tt><tt> (void) EGL_KHR_image;</tt><tt> </tt><tt> #endif</tt><tt> </tt><tt> #endif </tt><tt> </tt><tt> ;</tt><tt> </tt><tt> return 0;</tt><tt> </tt><tt> }</tt><tt> </tt></blockquote> </body> </html>