[qt5] Add -j to make to parallelize on Linux and MacOS

[BillyONeal]

No description provided.

[Neumann-A]

I think there is a VCPKG variable for concurrency. VCPKG_CONCURRENCY or similar. Should be visible with --debug in the cmake call if I am not mistaken. Currently on mobile so I cannot check it.

[jwillemsen]

There is a VCPKG_CONCURRENCY, see

vcpkg/ports/ace/portfile.cmake

Line 237 in 3a1e8e0

COMMAND make ${_ace_makefile_macros} "-j${VCPKG_CONCURRENCY}"

where we use it work regular make

[Neumann-A]

CMake too old on Linux CI. PREPEND was introduced with 3.15 https://cmake.org/cmake/help/v3.15/release/3.15.html#commands

[Neumann-A]

Since you are already touching concurrency settings:

vcpkg/ports/qt5-base/cmake/install_qt.cmake

Lines 6 to 26 in 0ab1a9e

	if (_bc_DISABLE_PARALLEL)
	set(NUMBER_OF_PROCESSORS "1")
	else()
	if(DEFINED ENV{NUMBER_OF_PROCESSORS})
	set(NUMBER_OF_PROCESSORS $ENV{NUMBER_OF_PROCESSORS})
	elseif(VCPKG_TARGET_IS_OSX)
	execute_process(
	COMMAND sysctl -n hw.ncpu
	OUTPUT_VARIABLE NUMBER_OF_PROCESSORS
	)
	string(REPLACE "\n" "" NUMBER_OF_PROCESSORS "${NUMBER_OF_PROCESSORS}")
	string(REPLACE " " "" NUMBER_OF_PROCESSORS "${NUMBER_OF_PROCESSORS}")
	else()
	execute_process(
	COMMAND nproc
	OUTPUT_VARIABLE NUMBER_OF_PROCESSORS
	)
	string(REPLACE "\n" "" NUMBER_OF_PROCESSORS "${NUMBER_OF_PROCESSORS}")
	string(REPLACE " " "" NUMBER_OF_PROCESSORS "${NUMBER_OF_PROCESSORS}")
	endif()
	endif()

could also be removed and replaced with VCPKG_CONCURRENCY