errors=0
+printf "Checking for pkg-config... "
if pkg-config --version > /dev/null 2>&1; then
- have_pkg_config=1
+ printf "Yes.\n"
else
- have_pkg_config=0
+ printf "No.\n"
+ cat <<EOF
+
+*** Error: This configure script requires pkg-config to find the
+compilation flags required to link against the various libraries
+needed by ${PROJECT}. The pkg-config program can be obtained from:
+
+ http://www.freedesktop.org/wiki/Software/pkg-config/
+
+Or you may be able install it with a command such as:
+
+ sudo apt-get install pkg-config
+ or:
+ sudo yum install pkgconfig
+
+EOF
+
+exit 1
+
fi
-printf "Checking for talloc development files... "
+printf "Checking for libtalloc... "
if pkg-config --exists talloc; then
printf "Yes.\n"
have_talloc=1
fi
rm -f elf-minimal elf-minimal.c
+printf "Checking for GL/gl.h... "
+have_gl=0
+if pkg-config --exists gl; then
+ printf "Yes.\n"
+ have_gl=1
+ gl_cflags=$(pkg-config --cflags gl)
+else
+ printf "#include <GL/gl.h>\nint main(void){return 0;}\n" > gl-minimal.c
+ if ${CC} -o gl-minimal gl-minimal.c > /dev/null 2>&1
+ then
+ printf "Yes.\n"
+ have_gl=1
+ else
+ printf "No.\n"
+ errors=$((errors + 1))
+ fi
+ rm -f gl-minimal gl-minimal.c
+fi
+
+printf "Checking for GL window-system-binding headers:\n"
+have_gl_winsys=0
+
+printf " Checking for GL/glx.h... "
+have_glx=No
+printf "#include <GL/glx.h>\nint main(void){return 0;}\n" > glx-minimal.c
+if ${CC} -o glx-minimal glx-minimal.c ${gl_cflags} > /dev/null 2>&1
+then
+ printf "Yes.\n"
+ have_gl_winsys=1
+ have_glx=Yes
+else
+ printf "No.\n"
+fi
+rm -f glx-minimal glx-minimal.c
+
+printf " Checking for GL/egl.h... "
+have_egl=No
+if pkg-config --exists egl; then
+ printf "Yes.\n"
+ have_egl=Yes
+ egl_cflags=$(pkg-config --cflags egl)
+else
+ printf "#include <GL/egl.h>\nint main(void){return 0;}\n" > egl-minimal.c
+ if ${CC} -o egl-minimal egl-minimal.c ${gl_cflags} > /dev/null 2>&1
+ then
+ printf "Yes.\n"
+ have_gl_winsys=1
+ have_egl=1
+ else
+ printf "No.\n"
+ fi
+ rm -f egl-minimal egl-minimal.c
+fi
+
+if [ $have_gl_winsys -eq 0 ]; then
+ errors=$((errors + 1))
+fi
+
if [ $errors -gt 0 ]; then
cat <<EOF
echo " http://http://sourceforge.net/projects/elftoolchain/"
echo
fi
+ if [ $have_gl -eq 0 ]; then
+ echo " Open GL header files (GL/gl.h)"
+ echo " http://www.mesa3d.org/"
+ echo
+ fi
+ if [ $have_gl_winsys -eq 0 ]; then
+ echo " OpenGL window-system-bindings header files (GL/glx.h and/or GL/egl.h)"
+ echo " http://www.mesa3d.org/"
+ echo
+ fi
cat <<EOF
With any luck, you're using a modern, package-based operating system
that has all of these packages available in the distribution. In that
On Debian and similar systems:
- sudo apt-get install libtalloc-dev libelf-dev
+ sudo apt-get install libtalloc-dev libelf-dev \\
+ libgl1-mesa-dev libgles2-mesa-dev
Or on Fedora and similar systems:
- sudo yum install libtalloc-devel libelf-devel
+ sudo yum install libtalloc-devel libelf-devel \\
+ mesa-libGL-devel mesa-libGLES-devel
On other systems, similar commands can be used, but the details of the
package names may be different.
-EOF
- if [ $have_pkg_config -eq 0 ]; then
-cat <<EOF
-Note: the pkg-config program is not available. This configure script
-uses pkg-config to find the compilation flags required to link against
-the various libraries needed by ${PROJECT}. It's possible you simply need
-to install pkg-config with a command such as:
-
- sudo apt-get install pkg-config
-Or:
- sudo yum install pkgconfig
-
-But if pkg-config is not available for your system, then you will need
-to modify the configure script to manually set the cflags and ldflags
-variables to the correct values to link against each library in each
-case that pkg-config could not be used to determine those values.
-
-EOF
- fi
-cat <<EOF
When you have installed the necessary dependencies, you can run
configure again to ensure the packages can be found, or simply run
"make" to compile.
cat <<EOF
-All required packages were found. You may now run the following
-commands to compile and install ${PROJECT}:
+All required packages were found.
+
+The following OpenGL window-system bindings will be supported:
+
+ GLX: ${have_glx}
+ EGL: ${have_egl}
+
+You may now run the following commands to compile and install ${PROJECT}:
make
sudo make install
LIBELF_CFLAGS = ${libelf_cflags}
LIBELF_LDFLAGS = ${libelf_ldflags}
+# Whether GLX headers are available
+HAVE_GLX = ${have_glx}
+
+# Flags needed to find GL and GLX header files (GL/gl.h and GL/glx.h)
+GL_CFLAGS = ${gl_cflags}
+
+# Whether EGL headers are available
+HAVE_EGL = ${have_egl}
+
+# Flags needed to find EGL header files (EGL/egl.h)
+EGL_CFLAGS = ${egl_cflags}
+
# Flags needed to have linker link only to necessary libraries
AS_NEEDED_LDFLAGS = ${as_needed_ldflags}
# Combined flags for compiling and linking against all of the above
-CONFIGURE_CFLAGS = \$(TALLOC_CFLAGS) \$(LIBELF_CFLAGS)
+CONFIGURE_CFLAGS = \$(TALLOC_CFLAGS) \$(LIBELF_CFLAGS) \$(GL_CFLAGS) \$(EGL_CFLAGS)
CONFIGURE_LDFLAGS = \$(TALLOC_LDFLAGS) \$(LIBELF_LDFLAGS)
EOF
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