No debugging symbols found in src/lua

[lua-rocks]

• compile lua with debug symbols

cd lua-5.3.6
make linux CFLAGS=-g

make[1]: Entering directory '/home/luarocks/.lua/src/lua-5.3.6/src'
make all SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline"
make[2]: Entering directory '/home/luarocks/.lua/src/lua-5.3.6/src'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/luarocks/.lua/src/lua-5.3.6/src'
make[1]: Leaving directory '/home/luarocks/.lua/src/lua-5.3.6/src'

• start gdb

gdb lua-5.3.6/src/lua

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Reading symbols from src/lua...
(No debugging symbols found in src/lua)