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/**
@page pkgconfig
@section pkgconfig_intro Introduction
pkg-config (http://pkgconfig.freedesktop.org/wiki/) is a helper
tool used when compiling applications and libraries. It helps you
insert the correct compiler options on the command line based on
installed software, instead of hard-coded values.
@section pkgconfig_usage Usage
Using pkg-config it is as simple as:
@verbatim
# compile:
gcc -c -o main.o main.c `pkg-config --cflags PKGNAME`
# link:
gcc -o my_application main.o `pkg-config --libs PKGNAME`
# compile + link in a single step:
gcc -o my_application main.c `pkg-config --cflags --libs PKGNAME`
@endverbatim
Where @b PKGNAME is your module, such as eina, eet, evas, ecore,
ecore-x, eio and so on.
One can do some queries such as the module version, other variables:
@verbatim
pkg-config --modversion PKGNAME
pkg-config --variable=prefix PKGNAME
@endverbatim
@section pkgconfig_troubleshooting Troubleshooting
Make sure @c pkg-config command is in your @c $PATH, otherwise
you'll end with:
@verbatim
pkg-config: command not found
@endverbatim
The @b PKGNAME it searched using pkg-config's build location,
usually @c /usr/lib/pkgconfig. This can be overwritten with @c
$PKG_CONFIG_LIBDIR (usually for cross compile) or extended with @c
$PKG_CONFIG_PATH. If you installed EFL to @c /opt/efl, then use:
@verbatim
export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/opt/efl/lib/pkgconfig"
pkg-config --cflags --libs PKGNAME
@endverbatim
Otherwise you'll end with:
@verbatim
Package PKGNAME was not found in the pkg-config search path.
Perhaps you should add the directory containing `PKGNAME.pc'
to the PKG_CONFIG_PATH environment variable
No package 'PKGNAME' found
@endverbatim
*/
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