gcc -g -O2 -Wall -W -Wbad-function-cast -Wcast-align -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wfloat-equal -pipe    testfd.c   -o testfd
testfd.c:30:20: config.h: No such file or directory
make: *** [testfd] Error 1