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我想在gtk + -3.0（使用msys构建它）上依赖的windows上编译一个C项目。下面是GTK包的列表，我装：在windows上编译与msys的gtk + 3项目
$ pacman -Ss gtk | grep installed
mingw32/mingw-w64-i686-glib2 2.52.3-1 [installed]
mingw32/mingw-w64-i686-gtk3 3.22.18-1 [installed]
mingw32/mingw-w64-i686-gtkmm3 3.22.0-1 [installed]
mingw64/mingw-w64-x86_64-glib2 2.52.3-1 [installed]
msys/glib2 2.48.2-1 [installed]
然而，当我运行./configure我得到以下错误：
checking for GTK... no
configure: error: Package requirements (gtk+-3.0 >= gtk_required_version) were not met:
No package 'gtk+-3.0' 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 GTK_CFLAGS and GTK_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.
我做了什么错？