Error(s):

x86_64-linux-gnu-gcc-8 -c -I537451452/ -I- 537451452/source.adb
source.adb:1:01: compilation unit expected
source.adb:2:19: target_name is an Ada 2020 feature
source.adb:3:19: target_name is an Ada 2020 feature
source.adb:4:19: target_name is an Ada 2020 feature
source.adb:5:19: target_name is an Ada 2020 feature
source.adb:6:19: target_name is an Ada 2020 feature
source.adb:7:19: target_name is an Ada 2020 feature
source.adb:8:19: target_name is an Ada 2020 feature
source.adb:9:19: target_name is an Ada 2020 feature
source.adb:10:19: target_name is an Ada 2020 feature
source.adb:11:19: target_name is an Ada 2020 feature
source.adb:12:19: target_name is an Ada 2020 feature
source.adb:13:19: target_name is an Ada 2020 feature
source.adb:14:19: target_name is an Ada 2020 feature
source.adb:15:19: target_name is an Ada 2020 feature
source.adb:16:19: target_name is an Ada 2020 feature
source.adb:17:19: target_name is an Ada 2020 feature
source.adb:18:19: target_name is an Ada 2020 feature
source.adb:19:19: target_name is an Ada 2020 feature
source.adb:20:19: target_name is an Ada 2020 feature
source.adb:21:19: target_name is an Ada 2020 feature
source.adb:22:19: target_name is an Ada 2020 feature
source.adb:23:19: target_name is an Ada 2020 feature
source.adb:24:19: target_name is an Ada 2020 feature
source.adb:25:19: target_name is an Ada 2020 feature
source.adb:26:19: target_name is an Ada 2020 feature
source.adb:27:19: target_name is an Ada 2020 feature
source.adb:28:19: target_name is an Ada 2020 feature
source.adb:29:19: target_name is an Ada 2020 feature
source.adb:30:19: target_name is an Ada 2020 feature
source.adb:31:19: target_name is an Ada 2020 feature
source.adb:32:19: target_name is an Ada 2020 feature
source.adb:33:19: target_name is an Ada 2020 feature
source.adb:34:19: target_name is an Ada 2020 feature
source.adb:35:19: target_name is an Ada 2020 feature
x86_64-linux-gnu-gnatmake-8: "537451452/source.adb" compilation error