简单makefile，怎么查不到-lgnu，是不是说明我需要自己编写gnu库呢？

Question

 1  CC=gcc
 2  libs_for_gcc = -lgnu 
 3  normal_libs = 
 4  ok: ok.o
 5  ifeq ($(CC),gcc) 
 6      $(CC) -o ok ok.o $(libs_for_gcc) 
 7  else 
 8      $(CC) -o ok ok.o $(normal_libs) 
 9  endif 

make：
gcc -o ok ok.o -lgnu

/usr/bin/ld: cannot find -lgnu
collect2: error: ld returned 1 exit status
test:6: recipe for target 'ok' failed
make: *** [ok] Error 1

Answer 1

先看系统有没有lgnu的库，然后就是u路径设置一下。-L