Hello, I want to install lablgtk, and when I was doing "./configure" (for lablgtk), I got following attached error msg (1). So I try to download cairo and comple it, but after "cd cairo-1.4.14", when I was doing "./configure" (for cairo), I got following attached msg (2). And then a funny thing is that I actually should have cairo installed on my machine using "MacPorts", according to attached commands and msg (3). Anyone can help me to see what are is the problem here? Many thanks in advance! ------------------------------------------ (1) ./configure for lablgtk ------------------------------------------ checking pkg-config is at least version 0.9.0... yes checking for BASE_DEPENDENCIES... configure: error: Package requirements (glib-2.0 >= 2.13.5    atk >= 1.9.0    pango >= 1.17.3    cairo >= 1.2.0) were not met: No package 'cairo' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables BASE_DEPENDENCIES_CFLAGS and BASE_DEPENDENCIES_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details. ------------------------------------------ ------------------------------------------ (2)  ./configure for cairo ------------------------------------------ checking whether cairo's Microsoft Windows font backend could be enabled... no (requires a Win32 platform) checking for cairo's PNG backend... configure: WARNING: Could not find libpng in the pkg-config search path checking whether cairo's PNG backend could be enabled... no configure: error: requested PNG backend could not be enabled ------------------------------------------ ------------------------------------------ (3)  MacPorts show cairo is there ------------------------------------------ $ sudo port installed cairo The following ports are currently installed:   cairo @1.4.10_0   cairo @1.4.14_0 (active) $ sudo port uninstall cairo @1.4.10_0 --->  Unable to uninstall cairo 1.4.10_0, the following ports depend on it: --->    pango --->    pango --->    gtk2 Error: port uninstall failed: Please uninstall the ports that depend on cairo first. $ sudo port uninstall cairo @1.4.14_0  --->  Unable to uninstall cairo 1.4.14_0, the following ports depend on it: --->    pango --->    pango --->    gtk2 Error: port uninstall failed: Please uninstall the ports that depend on cairo first. ------------------------------------------ Anything can I do to keep on installing lablgtk without problems from cairo? Thanks and Regards, -- Angela Zhu ------------------------------------------ Dept. of CS, Rice University <a href="http://www.cs.rice.edu/~yz2/">http://www.cs.rice.edu/~yz2/</a> ------------------------------------------