cmake: Replace CMAKE_{SOURCE,BINARY}_DIR with UHD_*_DIR

See the CMake 3.8 documentation on these two variables:
https://cmake.org/cmake/help/v3.8/variable/PROJECT-NAME_SOURCE_DIR.html
https://cmake.org/cmake/help/v3.8/variable/CMAKE_SOURCE_DIR.html

Under normal circumstances, these two are identical. For sub-projects
(i.e., when building UHD as part of something else that is also a CMake
project), only the former is useful. There is no discernible downside of
using UHD_SOURCE_DIR over CMAKE_SOURCE_DIR.

This was changed using sed:

$ sed -i "s/CMAKE_SOURCE_DIR/UHD_SOURCE_DIR/g" \
    `ag -l CMAKE_SOURCE_DIR **/{CMakeLists.txt,*.cmake}`
$ sed -i "s/CMAKE_BINARY_DIR/UHD_BINARY_DIR/g" \
    `ag -l CMAKE_BINARY_DIR **/{CMakeLists.txt,*.cmake}`

At the same time, we also replace the CMake variable UHD_HOST_ROOT (used
in MPM) with UHD_SOURCE_DIR. There's no reason to have two variables
with the same meaning and different names, but more importantly, this
means that UHD_SOURCE_DIR is defined even in those cases where MPM calls
into CMake files from UHD without any additional patches.

Shoutout to GitHub user marcobergamin for bringing this up.

3 files changed, 11 insertions, 11 deletions

diff --git a/host/examples/rfnoc-example/CMakeLists.txt b/host/examples/rfnoc-example/CMakeLists.txt
index 738b5ae8e..4bd9db678 100644
--- a/host/examples/rfnoc-example/CMakeLists.txt
+++ b/host/examples/rfnoc-example/CMakeLists.txt
@@ -8,7 +8,7 @@ cmake_minimum_required(VERSION 3.8)
 project(rfnoc-example CXX C)
 
 #make sure our local CMake Modules path comes first
-#list(INSERT CMAKE_MODULE_PATH 0 ${CMAKE_SOURCE_DIR}/cmake/Modules)
+#list(INSERT CMAKE_MODULE_PATH 0 ${UHD_SOURCE_DIR}/cmake/Modules)
 
 #install to PyBOMBS target prefix if defined
 #if(DEFINED ENV{PYBOMBS_PREFIX})
@@ -37,8 +37,8 @@ find_package(UnixCommands)
 if(BASH)
     message(STATUS "Found bash interpreter: ${BASH}")
     configure_file(
-        ${CMAKE_SOURCE_DIR}/cmake/Modules/run_testbench.sh.in
-        ${CMAKE_BINARY_DIR}/cmake/Modules/run_testbench.sh
+        ${UHD_SOURCE_DIR}/cmake/Modules/run_testbench.sh.in
+        ${UHD_BINARY_DIR}/cmake/Modules/run_testbench.sh
         @ONLY
     )
 else()
@@ -98,7 +98,7 @@ macro(RFNOC_ADD_TB_DIR)
         set(_target_name "${_tb_dir}_tb")
         message(STATUS "Adding testbench target: ${_target_name}")
         add_custom_target(${_target_name}
-            COMMAND ${CMAKE_BINARY_DIR}/cmake/Modules/run_testbench.sh ${UHD_FPGA_DIR} ${UHD_FPGA_DEFAULT_DEVICE} ${CMAKE_CURRENT_SOURCE_DIR} xsim
+            COMMAND ${UHD_BINARY_DIR}/cmake/Modules/run_testbench.sh ${UHD_FPGA_DIR} ${UHD_FPGA_DEFAULT_DEVICE} ${CMAKE_CURRENT_SOURCE_DIR} xsim
         )
         add_dependencies(testbenches ${_target_name})
     endif()
@@ -138,7 +138,7 @@ macro(RFNOC_REGISTER_IMAGE_CORE)
     if (_rfnoc_image_builder_exe)
         message(STATUS "Adding image core target: ${_target_name}")
         add_custom_target(${_target_name}
-            COMMAND ${_rfnoc_image_builder_exe} -F ${UHD_FPGA_DIR} -y ${CMAKE_CURRENT_SOURCE_DIR}/${_rfnoc_image_core_SRC} -I ${CMAKE_SOURCE_DIR}
+            COMMAND ${_rfnoc_image_builder_exe} -F ${UHD_FPGA_DIR} -y ${CMAKE_CURRENT_SOURCE_DIR}/${_rfnoc_image_core_SRC} -I ${UHD_SOURCE_DIR}
         )
     endif()
 endmacro()
@@ -147,7 +147,7 @@ endmacro()
 # Create uninstall target
 ########################################################################
 configure_file(
-    ${CMAKE_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in
+    ${UHD_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in
     ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
 @ONLY)
 add_custom_target(uninstall
diff --git a/host/examples/rfnoc-example/apps/CMakeLists.txt b/host/examples/rfnoc-example/apps/CMakeLists.txt
index bca9336ce..ea9dafd71 100644
--- a/host/examples/rfnoc-example/apps/CMakeLists.txt
+++ b/host/examples/rfnoc-example/apps/CMakeLists.txt
@@ -20,7 +20,7 @@ endif(MSVC)
 find_package(Boost 1.65 REQUIRED ${BOOST_REQUIRED_COMPONENTS})
 
 include_directories(
-    ${CMAKE_SOURCE_DIR}/include
+    ${UHD_SOURCE_DIR}/include
 )
 
 add_executable(init_gain_block
diff --git a/host/examples/rfnoc-example/lib/CMakeLists.txt b/host/examples/rfnoc-example/lib/CMakeLists.txt
index 45b5c9b03..8b447723d 100644
--- a/host/examples/rfnoc-example/lib/CMakeLists.txt
+++ b/host/examples/rfnoc-example/lib/CMakeLists.txt
@@ -23,10 +23,10 @@ endif()
 # Setup the include and linker paths
 ########################################################################
 include_directories(
-    ${CMAKE_SOURCE_DIR}/lib
-    ${CMAKE_SOURCE_DIR}/include
-    ${CMAKE_BINARY_DIR}/lib
-    ${CMAKE_BINARY_DIR}/include
+    ${UHD_SOURCE_DIR}/lib
+    ${UHD_SOURCE_DIR}/include
+    ${UHD_BINARY_DIR}/lib
+    ${UHD_BINARY_DIR}/include
     ${UHD_INCLUDE_DIRS}
     ${Boost_INCLUDE_DIR}
 )