[SYCL] Adjust devicelib install location

[jinge90]

This patch will do following:

1. Rename all .o libraries to .obj on Windows
2. Install all .obj libraries in lib/ on Windows
3. Uniform the previous libsycl-glibc and libsycl-msvc to libsycl-crt.o/obj

Signed-off-by: gejin [email protected]

[s-kanaev]

@jinge90 , please provide brief description of the problem this patch solves.

[jinge90]

@jinge90 , please provide brief description of the problem this patch solves.

Currently, device libraries included .o and .spv libraries. The ".o" libraries are for offline link with users' device code and .spv libraries are to be loaded and linked during runtime by sycl RT. bin/ is for dynamic libraries on Windows and lib/ is for static libraries. The spv libraries are some kind of "dynamic" libraries, putting them into bin/ seems to align with Windows' style.
The ".o" libraries are object files but ".o" is not a standard object name on Windows (typically it is .obj). Changing the suffix to ".obj" also aims to align with Windows style to avoid confusion to users.
@vzakhari and @mdtoguchi ,please feel free to correct me if anything wrong.
Thank you very much.

[vzakhari]

Please fix the LIT tests, otherwise LGTM

[jinge90]

Please fix the LIT tests, otherwise LGTM

Hi, @vzakhari
Just updated the patch to align the spv and obj output directories with install directories.
On Linux, both the static libraries(.a) and dynamic libraries(.so) are generated in build/lib/ folder
On Windows, the static libraries(.lib) are generated in build/lib and dynamic libraries(.dll) are generated in build/bin folder.
Thank you very much.

[jinge90]

Hi, @asavonic
We updated the install folder for device libraries. For all object files, we installed them in lib/ on both Linux and Windows. For .spv files, we don't change the install folder. We also change the suffix from ".o" to ".obj" to follow Windows style. Could you help review?
Thank you very much.