Semantic errors

Hello to all, I'm browsins git code with Eclipse. I'm on a local branch called "studio" based on master (last public commit e902e9b by Junio C Hamano on Monday March 11 2019). I've built everything by changing: CFLAGS = -g -Wall (removing -O2 to have smooth trace in debugging). But the environment detects the following semantic errors (I made no edits!!!): Description Resource Path Location Type Symbol 'GIT_HTML_PATH' could not be resolved git.c /git line 154 Semantic Error Symbol 'GIT_MAN_PATH' could not be resolved git.c /git line 158 Semantic Error Symbol 'GIT_INFO_PATH' could not be resolved git.c /git line 162 Semantic Error Symbol 'active_cache' could not be resolved commit.c /git /builtin line 899 Semantic Error Field 'ce_intent_to_add(active_cache[i])' could not be resolved commit.c /git/builtin line 899 Semantic Error Symbol 'active_nr' could not be resolved commit.c /git/bu iltin line 889 Semantic Error Symbol 'active_nr' could not be resolved commit.c /git/bu iltin line 898 Semantic Error Field 'oid' could not be resolved commit.c /git/builtin line 1654 Semantic Error Symbol 'active_nr' could not be resolved commit.c /git/bu iltin line 901 Semantic Error Symbol 'active_cache_tree' could not be resolved commit.c /git/builtin line 1654 Semantic Error Symbol 'active_cache_changed' could not be resolved commit.c /git/builtin line 418 Semantic Error Symbol 'active_cache_tree' could not be resolved commit.c /git/builtin line 419 Semantic Error Symbol 'active_nr' could not be resolved commit.c /git/bu iltin line 254 Semantic Error Symbol 'active_cache' could not be resolved commit.c /git /builtin line 255 Semantic Error

I can debug without problems, but what if I should trece through one of those errors? How can I fix them? Thanks in advance!!! Fabio.