I'm trying to compile GIMP 2.8.2 and I need a more recent version of several libraries to do this. My first problem is compiling gegl, the problem is as follows:
configure: error: Package requirements (babl >= 0.1.10) were not met:
No package 'babl' 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 BABL_CFLAGS
and BABL_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
Even though I have just installed babl 0.1.11 and removed babl 0.1.2 which is provided with Slackware 13.37.
What do I need to do to make pkg-tool recognize that this has actually been installed? I have tried to install babl in the default location but also under /usr/lib.
I can modify PKG_CONFIG_PATH, and this actually works, but how is this done properly?