cmake: Update coding style to use lowercase commands

Also updates our coding style file.

Ancient CMake versions required upper-case commands.  Later command
names became case-insensitive.  Now the preferred style is lower-case.

Run the following shell code (with GNU compliant sed):

cmake --help-command-list | grep -v "cmake version" | while read c; do
  echo 's/\b'"$(echo $c | tr '[:lower:]' '[:upper:]')"'\(\s*\)(/'"$c"'\1(/g'
done > convert.sed \
&& git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' \
'*CMakeLists.txt' | xargs -0 gsed -i -f convert.sed && rm convert.sed

(Make sure the backslashes don't get mangled!)

4 files changed, 65 insertions, 65 deletions

diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt
index 8ebf2cc09..3d4e064bd 100644
--- a/host/examples/CMakeLists.txt
+++ b/host/examples/CMakeLists.txt
@@ -8,7 +8,7 @@
 ########################################################################
 # example applications
 ########################################################################
-SET(example_sources
+set(example_sources
     benchmark_rate.cpp
     network_relay.cpp
     rx_multi_samples.cpp
@@ -30,52 +30,52 @@ SET(example_sources
     sync_to_gps.cpp
 )
 
-IF(ENABLE_RFNOC)
-    LIST(APPEND
+if(ENABLE_RFNOC)
+    list(APPEND
         example_sources
         rfnoc_nullsource_ce_rx.cpp
         rfnoc_rx_to_file.cpp
         rfnoc_radio_loopback.cpp
         benchmark_streamer.cpp
     )
-ENDIF(ENABLE_RFNOC)
+endif(ENABLE_RFNOC)
 
-IF(ENABLE_OCTOCLOCK)
-    LIST(APPEND example_sources test_clock_synch.cpp)
-ENDIF(ENABLE_OCTOCLOCK)
+if(ENABLE_OCTOCLOCK)
+    list(APPEND example_sources test_clock_synch.cpp)
+endif(ENABLE_OCTOCLOCK)
 
 #for each source: build an executable and install
-FOREACH(example_source ${example_sources})
-    GET_FILENAME_COMPONENT(example_name ${example_source} NAME_WE)
-    ADD_EXECUTABLE(${example_name} ${example_source})
-    TARGET_LINK_LIBRARIES(${example_name} uhd ${Boost_LIBRARIES})
+foreach(example_source ${example_sources})
+    get_filename_component(example_name ${example_source} NAME_WE)
+    add_executable(${example_name} ${example_source})
+    target_link_libraries(${example_name} uhd ${Boost_LIBRARIES})
     UHD_INSTALL(TARGETS ${example_name} RUNTIME DESTINATION ${PKG_LIB_DIR}/examples COMPONENT examples)
-ENDFOREACH(example_source)
+endforeach(example_source)
 
 ########################################################################
 # ASCII Art DFT - requires curses, so this part is optional
 ########################################################################
-FIND_PACKAGE(Curses)
+find_package(Curses)
 
-IF(CURSES_FOUND)
-    INCLUDE_DIRECTORIES(${CURSES_INCLUDE_DIR})
-    ADD_EXECUTABLE(rx_ascii_art_dft rx_ascii_art_dft.cpp)
-    TARGET_LINK_LIBRARIES(rx_ascii_art_dft uhd ${CURSES_LIBRARIES} ${Boost_LIBRARIES})
+if(CURSES_FOUND)
+    include_directories(${CURSES_INCLUDE_DIR})
+    add_executable(rx_ascii_art_dft rx_ascii_art_dft.cpp)
+    target_link_libraries(rx_ascii_art_dft uhd ${CURSES_LIBRARIES} ${Boost_LIBRARIES})
     UHD_INSTALL(TARGETS rx_ascii_art_dft RUNTIME DESTINATION ${PKG_LIB_DIR}/examples COMPONENT examples)
 
-    ADD_EXECUTABLE(twinrx_freq_hopping twinrx_freq_hopping.cpp)
-    TARGET_LINK_LIBRARIES(twinrx_freq_hopping uhd ${CURSES_LIBRARIES} ${Boost_LIBRARIES})
+    add_executable(twinrx_freq_hopping twinrx_freq_hopping.cpp)
+    target_link_libraries(twinrx_freq_hopping uhd ${CURSES_LIBRARIES} ${Boost_LIBRARIES})
     UHD_INSTALL(TARGETS twinrx_freq_hopping RUNTIME DESTINATION ${PKG_LIB_DIR}/examples COMPONENT examples)
-ENDIF(CURSES_FOUND)
+endif(CURSES_FOUND)
 
 ########################################################################
 # Examples using C API
 ########################################################################
-IF(ENABLE_C_API)
+if(ENABLE_C_API)
     #
     # Check if this particular C99 feature is available with this compiler
     #
-    INCLUDE(CheckCSourceCompiles)
+    include(CheckCSourceCompiles)
     CHECK_C_SOURCE_COMPILES("
     typedef struct {
         int bar;
@@ -93,26 +93,26 @@ IF(ENABLE_C_API)
     }
     " HAVE_C99_STRUCTDECL)
 
-    IF(HAVE_C99_STRUCTDECL)
-        ADD_SUBDIRECTORY(getopt)
-        INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/getopt)
+    if(HAVE_C99_STRUCTDECL)
+        add_subdirectory(getopt)
+        include_directories(${CMAKE_CURRENT_SOURCE_DIR}/getopt)
 
-        SET(C_API_EXAMPLES
+        set(C_API_EXAMPLES
             rx_samples_c
             tx_samples_c
         )
 
-        FOREACH(example ${C_API_EXAMPLES})
-            ADD_EXECUTABLE(${example} ${example}.c)
-            TARGET_LINK_LIBRARIES(${example} uhd getopt)
-            IF(UNIX)
-                TARGET_LINK_LIBRARIES(${example} m)
-            ENDIF(UNIX)
+        foreach(example ${C_API_EXAMPLES})
+            add_executable(${example} ${example}.c)
+            target_link_libraries(${example} uhd getopt)
+            if(UNIX)
+                target_link_libraries(${example} m)
+            endif(UNIX)
             UHD_INSTALL(TARGETS ${example} RUNTIME DESTINATION ${PKG_LIB_DIR}/examples COMPONENT examples)
-        ENDFOREACH(example ${C_API_EXAMPLES})
-    ENDIF(HAVE_C99_STRUCTDECL)
-ENDIF(ENABLE_C_API)
+        endforeach(example ${C_API_EXAMPLES})
+    endif(HAVE_C99_STRUCTDECL)
+endif(ENABLE_C_API)
 
-IF(ENABLE_PYTHON_API)
-    ADD_SUBDIRECTORY(python)
-ENDIF(ENABLE_PYTHON_API)
+if(ENABLE_PYTHON_API)
+    add_subdirectory(python)
+endif(ENABLE_PYTHON_API)
diff --git a/host/examples/getopt/CMakeLists.txt b/host/examples/getopt/CMakeLists.txt
index 047572108..4fe8ab43d 100644
--- a/host/examples/getopt/CMakeLists.txt
+++ b/host/examples/getopt/CMakeLists.txt
@@ -8,7 +8,7 @@
 ########################################################################
 # getopt library for C examples since MSVC does not include it
 ########################################################################
-INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIRECTORY})
-ADD_LIBRARY(getopt STATIC
+include_directories(${CMAKE_CURRENT_SOURCE_DIRECTORY})
+add_library(getopt STATIC
     ${CMAKE_CURRENT_SOURCE_DIR}/getopt.c
 )
diff --git a/host/examples/init_usrp/CMakeLists.txt b/host/examples/init_usrp/CMakeLists.txt
index ccbe3a1e3..9cc835442 100644
--- a/host/examples/init_usrp/CMakeLists.txt
+++ b/host/examples/init_usrp/CMakeLists.txt
@@ -36,24 +36,24 @@ find_package(UHD "3.8.0" REQUIRED)
 #find_package(UHD 3.8.1 EXACT REQUIRED)
 
 ### Configure Compiler ########################################################
-IF(CMAKE_VERSION VERSION_LESS "3.1")
-    IF(${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
-        SET(CMAKE_CXX_FLAGS "--std=gnu++11 ${CMAKE_CXX_FLAGS}")
-    ELSEIF(${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
-        IF("${IS_APPLE}" STREQUAL "")
-            SET(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
-        ELSE()
-            SET(CMAKE_CXX_FLAGS "-std=c++11 -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
-        ENDIF()
-    ENDIF()
-ELSE()
-    SET(CMAKE_CXX_STANDARD 11)
-ENDIF()
+if(CMAKE_VERSION VERSION_LESS "3.1")
+    if(${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
+        set(CMAKE_CXX_FLAGS "--std=gnu++11 ${CMAKE_CXX_FLAGS}")
+    elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+        if("${IS_APPLE}" STREQUAL "")
+            set(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
+        else()
+            set(CMAKE_CXX_FLAGS "-std=c++11 -stdlib=libc++ ${CMAKE_CXX_FLAGS}")
+        endif()
+    endif()
+else()
+    set(CMAKE_CXX_STANDARD 11)
+endif()
 
-IF(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" AND ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
-    SET(CMAKE_EXE_LINKER_FLAGS "-lthr ${CMAKE_EXE_LINKER_FLAGS}")
-    SET(CMAKE_CXX_FLAGS "-stdlib=libc++ ${CMAKE_CXX_FLAGS}")
-ENDIF()
+if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" AND ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+    set(CMAKE_EXE_LINKER_FLAGS "-lthr ${CMAKE_EXE_LINKER_FLAGS}")
+    set(CMAKE_CXX_FLAGS "-stdlib=libc++ ${CMAKE_CXX_FLAGS}")
+endif()
 
 include_directories(
     ${Boost_INCLUDE_DIRS}
@@ -64,13 +64,13 @@ link_directories(${Boost_LIBRARY_DIRS})
 ### Make the executable #######################################################
 add_executable(init_usrp init_usrp.cpp)
 
-SET(CMAKE_BUILD_TYPE "Release")
-MESSAGE(STATUS "******************************************************************************")
-MESSAGE(STATUS "* NOTE: When building your own app, you probably need all kinds of different  ")
-MESSAGE(STATUS "* compiler flags. This is just an example, so it's unlikely these settings    ")
-MESSAGE(STATUS "* exactly match what you require. Make sure to double-check compiler and     ")
-MESSAGE(STATUS "* linker flags to make sure your specific requirements are included.          ")
-MESSAGE(STATUS "******************************************************************************")
+set(CMAKE_BUILD_TYPE "Release")
+message(STATUS "******************************************************************************")
+message(STATUS "* NOTE: When building your own app, you probably need all kinds of different  ")
+message(STATUS "* compiler flags. This is just an example, so it's unlikely these settings    ")
+message(STATUS "* exactly match what you require. Make sure to double-check compiler and     ")
+message(STATUS "* linker flags to make sure your specific requirements are included.          ")
+message(STATUS "******************************************************************************")
 
 # Shared library case: All we need to do is link against the library, and
 # anything else we need (in this case, some Boost libraries):
diff --git a/host/examples/python/CMakeLists.txt b/host/examples/python/CMakeLists.txt
index 758a69af1..23d1b83c6 100644
--- a/host/examples/python/CMakeLists.txt
+++ b/host/examples/python/CMakeLists.txt
@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 
-SET(python_examples
+set(python_examples
     rx_to_file.py
     tx_waveforms.py
     curses_fft.py