Installed GTK+ with homebrew, but pkg_check_modules doesn't recognize it

Question

I'm trying to compile an open source repo, which requires gtk+ in CMakeLists.txt file:

pkg_check_modules (GTK     REQUIRED gtk+-2.0>=2.12)

So I installed gtk+-2.0 with homebrew:

~  brew install gtk
Warning: gtk+-2.24.23 already installed

And to make sure pkg-config recognizes it, I've tried:

~  pkg-config --modversion gtk+-2.0
2.24.23

Which is perfectly right, but when I configure the project with ccmake .. , I got the error:

CMake Error at /usr/local/Cellar/cmake/2.8.12.2/share/cmake/Modules/FindPkgConfig.cmake:279 (message):
  A required package was not found
Call Stack (most recent call first):
  /usr/local/Cellar/cmake/2.8.12.2/share/cmake/Modules/FindPkgConfig.cmake:333 (_pkg_check_modules_internal)
  CMakeLists.txt:194 (pkg_check_modules)

How can I fix this?

Answer 1

Have you tried

export PKG_CONFIG_PATH=/opt/X11/lib/pkgconfig:$PKG_CONFIG_PATH

or

export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig"

from https://github.com/naxuroqa/Venom/issues/4#issuecomment-27215983

Answer 2

您所要做的就是安装pkg-config：

brew install pkg-config