Moved unused pkg-config settings to /doc/dev

(Closes #971)

.gitignore

@@ -1,5 +1,5 @@
 build
 build-mingw
+.project
 obj-*
 *.user*
-.project

CMakeLists.txt

@@ -47,13 +47,6 @@ endif ()
 
 find_package(libusb REQUIRED)
 
-## Package configuration (pkg-config) on unix-based systems
-if (NOT WIN32 AND NOT CMAKE_CROSSCOMPILING)
-    #add_subdirectory(cmake/pkgconfig)
-    find_package(PkgConfig)
-    pkg_check_modules(GTK3 gtk+-3.0)
-endif ()
-
 ## Check for system-specific additional header files and libraries
 include(CheckIncludeFile)
 

doc/compiling.md

@@ -88,7 +88,6 @@ Install the following packages from your package repository:
 * `build-essential` (on Debian based distros (Debian, Ubuntu))
 * `cmake` (3.4.2 or later, use the latest version available from the repository)
 * `rpm` (on Debian based distros (Debian, Ubuntu), needed for package build with `make package`)
-* `pkg-config`
 * `libusb-1.0`
 * `libusb-1.0-0-dev` (development headers for building)
 * `libgtk-3-dev` (_optional_, needed for `stlink-gui`)
@@ -194,7 +193,6 @@ Then install the following dependencies from the package repository:
 * `git`
 * `gcc` or `llvm` (for clang) (C-compiler)
 * `cmake`
-* `pkg-config`
 * `libusb`
 * `gtk+3` or `gtk3` (_optional_, needed for `stlink-gui`)
 

doc/dev/developer.txt

@@ -1,3 +1,20 @@
+=== Compilation with pkg-config ===
+
+In order to use pkg-config for development purposes, add the following lines to the toplevel CMakeLists.txt file:
+
+###
+# Additional build tasks
+###
+
+## Package configuration (pkg-config) on unix-based systems
+if (NOT WIN32 AND NOT CMAKE_CROSSCOMPILING)
+    add_subdirectory(doc/dev/pkg-config) # Option A: external tool pkg-config
+    find_package(PkgConfig)              # Option B: internal cmake module for pkg-config integration
+    pkg_check_modules(GTK3 gtk+-3.0)
+endif ()
+
+ToDo: Check for compatibility issues between options A and B.
+
 
 === Target Identification ===