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    kbuild: fix ld-option function · 5b83df2b
    Antony Pavlov 提交于
    The kbuild's ld-option function is broken because
    the command
      $(CC) /dev/null -c -o "$$TMPO"
    does not create object file!
    
    I have used a relatively old mips gcc 3.4.6 cross-compiler
    and a relatively new gcc 4.7.2 to check this fact
    but the results are the same.
    
    EXAMPLE:
      $ rm /tmp/1.o
      $ mips-linux-gcc /dev/null -c -o /tmp/1.o
      mips-linux-gcc: /dev/null: linker input file unused because linking not done
      $ ls -la /tmp/1.o
      ls: cannot access /tmp/1.o: No such file or directory
    
    We can easily fix the problem by adding
    the '-x c' compiler option.
    
    EXAMPLE:
      $ rm /tmp/1.o
      $ mips-linux-gcc -x c /dev/null -c -o /tmp/1.o
      $ ls -la /tmp/1.o
      -rw-r--r-- 1 antony antony 778 Apr  2 20:40 /tmp/1.o
    
    Also fix wrong ld-option example.
    Signed-off-by: NAntony Pavlov <antonynpavlov@gmail.com>
    Signed-off-by: NMichal Marek <mmarek@suse.cz>
    5b83df2b
Kbuild.include 10.1 KB