CMake/Tests/CMakeTests/ProcessorCountTest.cmake.in

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include(ProcessorCount)
ProcessorCount(processor_count)
message("### 1. This line should be the first line of text in the test output.")
message("### 2. If there was output from this test before line #1, then the")
message("### 3. ProcessorCount(...) function call is emitting output that it shouldn't...")
message("processor_count='${processor_count}'")
execute_process(
COMMAND "@CMAKE_BINARY_DIR@/Source/kwsys/$ENV{CMAKE_CONFIG_TYPE}/cmsysTestsCxx"
testSystemInformation
OUTPUT_VARIABLE tsi_out
ERROR_VARIABLE tsi_err)
string(REGEX REPLACE "(.*)GetNumberOfPhysicalCPU:.([0-9]*)(.*)" "\\2"
system_info_processor_count "${tsi_out}")
message("system_info_processor_count='${system_info_processor_count}'")
if(system_info_processor_count EQUAL processor_count)
message("processor count matches system information")
endif()
message("")
message("CTEST_FULL_OUTPUT (Avoid ctest truncation of output)")
message("")
message("tsi_out='${tsi_out}'")
message("tsi_err='${tsi_err}'")
message("")
# Evaluate possible error conditions:
#
set(err 0)
set(fatal 0)
if(processor_count EQUAL 0)
set(err 1)
set(fatal 1)
message("err 1")
message("could not determine number of processors
- Additional code for this platform needed in ProcessorCount.cmake?")
message("")
endif()
if(NOT system_info_processor_count EQUAL processor_count)
set(err 2)
message("err 2")
message("SystemInformation and ProcessorCount.cmake disagree:\n"
"processor_count='${processor_count}'\n"
"SystemInformation processor_count='${system_info_processor_count}'")
message("")
endif()
if(NOT processor_count MATCHES "^[0-9]+$")
set(err 3)
set(fatal 1)
message("err 3")
message("ProcessorCount function returned a non-integer")
message("")
endif()
if(NOT system_info_processor_count MATCHES "^[0-9]+$")
set(err 4)
message("err 4")
message("SystemInformation ProcessorCount function returned a non-integer")
message("")
endif()
if(fatal)
message(FATAL_ERROR "processor_count='${processor_count}' - see previous test output for more details - it is likely more/different code is needed in ProcessorCount.cmake to fix this test failure - processor_count should be a non-zero positive integer (>=1) for all supported CMake platforms")
endif()