feat: add gcov code coverage support (#3010)

Ability to pass the `CODE_COVERAGE=yes` option to `make`, which, when
used with the `icx` compiler, adds the necessary build and link flags.
Generates `.gcno` files during the build process.

note: `llvm-cov gcov` should be used to collect coverage information

dev/make/compiler_definitions/dpcpp.mk

@@ -34,6 +34,8 @@ COMPILER.win.dpcpp = icx -fsycl $(if $(MSVC_RT_is_release),-MD, -MDd /debug:none
                      -Wno-deprecated-declarations -fsycl-device-code-split=per_kernel
 
 link.dynamic.lnx.dpcpp = icpx -fsycl -m64 -fsycl-device-code-split=per_kernel -fsycl-max-parallel-link-jobs=$(SYCL_LINK_PRL)
+link.dynamic.lnx.dpcpp += $(if $(filter yes,$(GCOV_ENABLED)),-Xscoverage,)
+
 link.dynamic.win.dpcpp = icx -fsycl -m64 -fsycl-device-code-split=per_kernel -fsycl-max-parallel-link-jobs=$(SYCL_LINK_PRL)
 
 pedantic.opts.lnx.dpcpp = -pedantic \

dev/make/compiler_definitions/icx.mkl.32e.mk

@@ -32,10 +32,11 @@ CORE.SERV.COMPILER.icx = generic
 
 COMPILER.lnx.icx = icx -m64 \
                      -Werror -Wreturn-type -qopenmp-simd
-
+COMPILER.lnx.icx += $(if $(filter yes,$(GCOV_ENABLED)),-coverage,)
 COMPILER.win.icx = icx $(if $(MSVC_RT_is_release),-MD -Qopenmp-simd, -MDd) -nologo -WX -Wno-deprecated-declarations
 
 link.dynamic.lnx.icx = icx -m64 -no-intel-lib
+link.dynamic.lnx.icx += $(if $(filter yes,$(GCOV_ENABLED)),-coverage,)
 
 pedantic.opts.lnx.icx = -pedantic \
                         -Wall \

makefile

@@ -59,6 +59,8 @@ PLAT_is_$(PLAT)                    := yes
 MSVC_RT_is_$(MSVC_RUNTIME_VERSION) := yes
 ARCH_is_$(ARCH)                    := yes
 
+GCOV_ENABLED                       := $(if $(filter yes,$(CODE_COVERAGE)),$(if $(OS_is_lnx),yes,no),no)
+
 DEFAULT_BUILD_PARAMETERS_LIB       := $(if $(OS_is_win),no,yes)
 BUILD_PARAMETERS_LIB               ?= $(DEFAULT_BUILD_PARAMETERS_LIB)