Redo "CMAKE_CURRENT_SOURCE_DIR" and clearer build messages

Author: DannyDaemonic

CMakeLists.txt

@@ -84,14 +84,14 @@ find_package(Git)
 if(Git_FOUND)
   execute_process(
     COMMAND \${GIT_EXECUTABLE} rev-parse HEAD
-    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     OUTPUT_VARIABLE TEMP_HEAD
     OUTPUT_STRIP_TRAILING_WHITESPACE
     RESULT_VARIABLE GIT_HEAD_RESULT
   )
   execute_process(
     COMMAND \${GIT_EXECUTABLE} rev-list --count HEAD
-    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     OUTPUT_VARIABLE TEMP_COUNT
     OUTPUT_STRIP_TRAILING_WHITESPACE
     RESULT_VARIABLE GIT_COUNT_RESULT
@@ -102,24 +102,24 @@ if(Git_FOUND)
   endif()
 endif()
 
-file(WRITE \"${CMAKE_SOURCE_DIR}/build-info.h\" \"#pragma once\\n#define BUILD_NUMBER \${COUNT}\\n#define BUILD_COMMIT \\\"\${HEAD}\\\"\\n\")
+file(WRITE \"${CMAKE_CURRENT_SOURCE_DIR}/build-info.h\" \"#pragma once\\n#define BUILD_NUMBER \${COUNT}\\n#define BUILD_COMMIT \\\"\${HEAD}\\\"\\n\")
 ")
 
 # Call the script to generate build-info.h initially
 execute_process(
   COMMAND ${CMAKE_COMMAND} -DGIT_EXECUTABLE=${GIT_EXECUTABLE} -P ${CMAKE_BINARY_DIR}/BUILD_INFO.cmake
 )
 
-if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
+if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git")
   # Add a custom target to regenerate build-info.h when .git/index changes
-  add_custom_target(BUILD_INFO ALL DEPENDS "${CMAKE_SOURCE_DIR}/build-info.h")
+  add_custom_target(BUILD_INFO ALL DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/build-info.h")
 
   # Add a custom command to generate build-info.h when .git/index changes
   add_custom_command(
-    OUTPUT "${CMAKE_SOURCE_DIR}/build-info.h"
-    COMMENT "Updating build-info.h"
+    OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/build-info.h"
+    COMMENT "Generating build details from Git"
     COMMAND ${CMAKE_COMMAND} -DGIT_EXECUTABLE=${GIT_EXECUTABLE} -P ${CMAKE_BINARY_DIR}/BUILD_INFO.cmake
-    DEPENDS "${CMAKE_SOURCE_DIR}/.git/index"
+    DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/.git/index"
     VERBATIM
   )
 endif()

Makefile

@@ -184,15 +184,15 @@ common.o: examples/common.cpp examples/common.h
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
 clean:
-	rm -vf *.o main quantize quantize-stats perplexity embedding benchmark-matmult
+	rm -vf *.o main quantize quantize-stats perplexity embedding benchmark-matmult build-info.h
 
 build-info.h: $(GIT_INDEX)
-	@BUILD_NUMBER=`git rev-list HEAD --count 2>/dev/null`;\
-	BUILD_COMMIT=`git rev-parse HEAD 2>/dev/null`;\
-	if [ -z "$$BUILD_NUMBER" ] || [ -z "$$BUILD_COMMIT" ]; then\
-		BUILD_NUMBER="0";\
-		BUILD_COMMIT="unknown";\
-	fi;\
+	@BUILD_NUMBER="0";\
+	BUILD_COMMIT="unknown";\
+	echo "git rev-list HEAD --count"; REV_LIST=`git rev-list HEAD --count`;\
+	if [ $$? -eq 0 ]; then BUILD_NUMBER=$$REV_LIST; fi;\
+	echo "git rev-parse HEAD"; REV_PARSE=`git rev-parse HEAD`;\
+	if [ $$? -eq 0 ]; then BUILD_COMMIT=$$REV_PARSE; fi;\
 	echo "#ifndef BUILD_INFO_H" > $@;\
 	echo "#define BUILD_INFO_H" >> $@;\
 	echo "" >> $@;\
@@ -201,7 +201,6 @@ build-info.h: $(GIT_INDEX)
 	echo "" >> $@;\
 	echo "#endif // BUILD_INFO_H" >> $@;
 
-
 main: examples/main/main.cpp build-info.h ggml.o llama.o common.o $(OBJS)
 	$(CXX) $(CXXFLAGS) $(filter-out build-info.h,$^) -o $@ $(LDFLAGS)
 	@echo