1.2.54

Usage: /usr/bin/libpng-config [OPTION] ... Known values for OPTION are: --prefix print libpng prefix --libdir print path to directory containing library (disabled in Debian/Ubuntu) --libs print library linking information --ccopts print compiler options --cppflags print pre-processor flags --cflags print preprocessor flags, I_opts, and compiler options --I_opts print "-I" include options --L_opts print linker "-L" flags for dynamic linking --R_opts print dynamic linker "-R" or "-rpath" flags --ldopts print linker options --ldflags print linker flags (ldopts, L_opts, R_opts, and libs) --static revise subsequent outputs for static linking --help print this help and exit --version print version information