On Mon, Mar 14, 2011 at 11:55 AM, Henrik Størner <henrik at hswn.dk> wrote:

...

 MAKE="gmake" sh -x ./build/lfs.sh

• echo Checking for Large File Support ... Checking for Large File Support ...
• cd build
• gmake -f Makefile.test-lfs clean
• uname -s
• tr [/] [_] OS=SunOS gmake: *** [clean] Error 2
• gmake -f Makefile.test-lfs gmake: Nothing to be done for `all'.
• [ 0 -ne 0 ]
• ./test-lfs-std 4 STDRES=4:1:-78191077919555584
• test 4:1:-78191077919555584 != 4:1:0 -a 4:1:-78191077919555584 != 8:1:0
• echo ERROR: LFS support check failed for standard file support ERROR: LFS support check failed for standard file support
• exit 1

This is bizarre.

What this does is that it builds a tiny test program using standard compiler-flags first, and then the flags that you would normally use when compiling for large file support (LFS).

When compiled without LFS, I expect the normal file offset "off_t" variable to be 32 bits (4 bytes); with LFS, I would expect it to be 64-bits (8 bytes). To test that, the program prints out

1. The value of "sizeof(off_t)"

2. A boolean (0/1) value to see if sizeof(off_t) is what I expect

3. The value of an off_t variable that has been cleared to zero using memset() - we need to print these values occasionally (e.g. for keeping track of how long into a logfile we have already scanned).

4. and 2) look OK, but the value prints as "-7819...." There is no way I can see how that can happen - that variable has been cleared to 0 just a few lines above the print-statement.

Just to see if I'm completely wrong, could you try running this for me:

 cd build rm test-lfs-std test-lfs-lfs OS=SunOS gmake -f Makefile.test-lfs ./test-lfs-std 4 ./test-lfs-lfs 8

The output from the last line would be interesting.

root at solaris { ~ }$ rm test-lfs-std test-lfs-lfs root at solaris { ~ }$ OS=SunOS gmake -f Makefile.test-lfs root at solaris { ~ }$ OS=SunOS gmake -f Makefile.test-lfs test-lfs.c: In function 'main': test-lfs.c:11:2: warning: incompatible implicit declaration of built-in function 'memset' test-lfs.c: In function 'main': test-lfs.c:11:2: warning: implicit declaration of function 'memset' test-lfs.c:11:2: warning: incompatible implicit declaration of built-in function 'memset' root at solaris { ~ }$ ./test-lfs-std 4 4:1:-78191077919555584 root at solaris { ~ }$ ./test-lfs-std 8 4:0:-78191077919555584

Thanks, Henrik

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