1 files changed, 72 insertions, 0 deletions
diff --git a/Tests/CMakeTests/ProcessorCountTest.cmake.in b/Tests/CMakeTests/ProcessorCountTest.cmake.in
new file mode 100644
index 000000000..98f6ab16d
--- /dev/null
+++ b/Tests/CMakeTests/ProcessorCountTest.cmake.in
@@ -0,0 +1,72 @@
+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()