do some ridiculous bending-over-backwards to avoid CMake errors in fi…

…nding RandLAPACK version. This change only addresses failures that happened when CMakeCache.txt was edited after it was initially created.

CMake/rl_version.cmake

@@ -1,27 +1,53 @@
 set(tmp)
+
+# Find Git executable
 find_package(Git QUIET)
 if(GIT_FOUND)
-    execute_process(COMMAND ${GIT_EXECUTABLE}
-        --git-dir=${CMAKE_SOURCE_DIR}/.git describe
-        --tags --match "[0-9]*.[0-9]*.[0-9]*"
-        OUTPUT_VARIABLE tmp OUTPUT_STRIP_TRAILING_WHITESPACE
-        ERROR_QUIET)
+    message(STATUS "Git found: ${GIT_EXECUTABLE}")
+    execute_process(
+        COMMAND ${GIT_EXECUTABLE} --git-dir=${CMAKE_SOURCE_DIR}/.git describe --tags --match "[0-9]*.[0-9]*.[0-9]*"
+        OUTPUT_VARIABLE tmp
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        ERROR_VARIABLE git_error
+        RESULT_VARIABLE git_result
+    )
+
+    # Print the result of the Git command
+    message(STATUS "Git command result: ${git_result}")
+    message(STATUS "Git command output: ${tmp}")
+    if(NOT git_result EQUAL 0)
+        message(WARNING "Git command failed with error: ${git_error}")
+        set(tmp "0.0.0")
+    endif()
+else()
+    message(WARNING "Git not found, using fallback version 0.0.0")
+    set(tmp "0.0.0")
 endif()
+
+# Check if tmp is empty and set a fallback version if necessary
 if(NOT tmp)
+    message(WARNING "Git describe output is empty, using fallback version 0.0.0")
     set(tmp "0.0.0")
 endif()
 
-set(RandLAPACK_VERSION ${tmp} CACHE STRING "RandLAPACK version" FORCE)
+# Debugging: Print tmp before setting RandLAPACK_VERSION
+message(STATUS "tmp before setting RandLAPACK_VERSION: ${tmp}")
 
-string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)(.*$)"
-  "\\1" RandLAPACK_VERSION_MAJOR ${RandLAPACK_VERSION})
+# Set RandLAPACK_VERSION without CACHE option
+set(RandLAPACK_VERSION "${tmp}")
+message(STATUS "RandLAPACK_VERSION after setting: ${RandLAPACK_VERSION}")
 
-string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)(.*$)"
-  "\\2" RandLAPACK_VERSION_MINOR ${RandLAPACK_VERSION})
+# Ensure RandLAPACK_VERSION is not empty
+if(NOT RandLAPACK_VERSION)
+    message(FATAL_ERROR "RandLAPACK_VERSION is empty")
+endif()
 
-string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)(.*$)"
-  "\\3" RandLAPACK_VERSION_PATCH ${RandLAPACK_VERSION})
+# Extract major, minor, and patch versions
+string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)(.*)$" "\\1" RandLAPACK_VERSION_MAJOR "${RandLAPACK_VERSION}")
+string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)(.*)$" "\\2" RandLAPACK_VERSION_MINOR "${RandLAPACK_VERSION}")
+string(REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)(.*)$" "\\3" RandLAPACK_VERSION_PATCH "${RandLAPACK_VERSION}")
 
+# Print extracted version components
 message(STATUS "RandLAPACK_VERSION_MAJOR=${RandLAPACK_VERSION_MAJOR}")
 message(STATUS "RandLAPACK_VERSION_MINOR=${RandLAPACK_VERSION_MINOR}")
 message(STATUS "RandLAPACK_VERSION_PATCH=${RandLAPACK_VERSION_PATCH}")