#./configure
* I found a copy of pkgconfig, but there is no cairo-png.pc file around.
You may want to set the PKG_CONFIG_PATH variable to point to its
location.
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configure: WARNING:
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* I could not find a working copy of cairo-png. Check config.log for hints on why
this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
so that compiler and the linker can find libcairo and its header files. If
you have not installed cairo-png, you can get it either from its original home on
http://cairographics.org/releases/
You can find also find an archive copy on
http://oss.oetiker.ch/rrdtool/pub/libs
The last tested version of cairo-png is 1.4.6.
LIBS=-lm
LDFLAGS=
CPPFLAGS=
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