Build - remove Erlang headers - these are now in the external subprojects sp_midi and sp_link

Author: samaaron

app/external/CMakeLists.txt

@@ -5,20 +5,8 @@ message(STATUS "Externals Builder")
 
 project(ExternalsBuilder)
 
-if(WIN32)
-  set(ERLANG_INCLUDE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../prebuilt/windows/headers/erlang CACHE STRING "Path to the Erlang header files")
-elseif(${CMAKE_SYSTEM_NAME} MATCHES Darwin) # macOS
-  set(ERLANG_INCLUDE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../prebuilt/macos/headers/erlang CACHE STRING "Path to the Erlang header files")
-else()
-  execute_process(
-    COMMAND erl -noshell -eval "io:format(\"~s~n\", [filename:join([lists:concat([code:root_dir(), \"/erts-\", erlang:system_info(version)]), \"include\"])]), init:stop(0)."
-    OUTPUT_VARIABLE FOUND_ERLANG_INCLUDE_PATH OUTPUT_STRIP_TRAILING_WHITESPACE)
-  set(ERLANG_INCLUDE_PATH ${FOUND_ERLANG_INCLUDE_PATH} CACHE STRING "Path to the Erlang header files")
-endif()
-
 option(USE_SYSTEM_LIBS "Use system libraries instead of bundled libraries when building" OFF)
 
-message(STATUS "ERLANG_INCLUDE_PATH: ${ERLANG_INCLUDE_PATH}")
 message(STATUS "USE_SYSTEM_LIBS: ${USE_SYSTEM_LIBS}")
 
 include(GNUInstallDirs)
@@ -33,7 +21,6 @@ ExternalProject_Add(sp_midi
     INSTALL_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../server/beam/tau/priv
     CMAKE_ARGS
         -DCMAKE_INSTALL_PREFIX=${CMAKE_CURRENT_SOURCE_DIR}/../server/beam/tau/priv
-        -DERLANG_INCLUDE_PATH=${ERLANG_INCLUDE_PATH}
         -DCMAKE_OSX_DEPLOYMENT_TARGET=${CMAKE_OSX_DEPLOYMENT_TARGET}
         -DUSE_SYSTEM_RTMIDI=${USE_SYSTEM_LIBS}
     BUILD_COMMAND ${CMAKE_COMMAND} --build . --config ${CMAKE_BUILD_TYPE}
@@ -45,7 +32,6 @@ ExternalProject_Add(sp_link
     INSTALL_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../server/beam/tau/priv
     CMAKE_ARGS
         -DCMAKE_INSTALL_PREFIX=${CMAKE_CURRENT_SOURCE_DIR}/../server/beam/tau/priv
-        -DERLANG_INCLUDE_PATH=${ERLANG_INCLUDE_PATH}
         -DCMAKE_OSX_DEPLOYMENT_TARGET=${CMAKE_OSX_DEPLOYMENT_TARGET}
     BUILD_COMMAND ${CMAKE_COMMAND} --build . --config ${CMAKE_BUILD_TYPE}
     )