Messages in this thread | | | Subject | Re: using memset in a module | From | Shaya Potter <> | Date | 26 Sep 2002 19:02:26 -0400 |
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On Thu, 2002-09-26 at 18:51, Randy.Dunlap wrote: > On 26 Sep 2002, Shaya Potter wrote: > > | I have a problem using memset in a module. > | > | I've tried including <linux/string.h> or <asm/string.h> but whenever I > | compile with gcc 2.95, the resulting object has memset being an > | undefined symbol. When I compile with gcc-3.2 it works right as is > | inline in the code and there's no symbol. > | > | has anyone seen this b4? Is this a gcc bug? a kernel header bug? a bug > | in my coding (i.e. does one have to do anything else besides include > | <linux or asm/string.h> or have special gcc cmd line options that are > | different from whats normally needed for a module). > | > | if it matters, I'm using the debian gcc's > | > | spotter@zaphod:~/cvs/zap/virtualization$ gcc -v > | Reading specs from /usr/lib/gcc-lib/i386-linux/2.95.4/specs > | gcc version 2.95.4 20011002 (Debian prerelease) > | > | and (cutting the cruft) > | gcc version 3.2.1 20020924 (Debian prerelease) > > What gcc options are you using? > You need -O2 at least. > ^ upper-case letter O
yes, using it.
gcc -Wall -DMODULE -DMODVERSIONS -D__KERNEL__ -DLINUX -DEXPORT_SYMTAB -I/usr/src/linux/include/ -I`pwd`/../migration -I`pwd`/..//virtualization -O2 -fomit-frame-pointer -pipe -fno-strength-reduce -malign-loops=2 -malign-jumps=2 -malign-functions=2 -o fs1.o -c virtualizers/fs1.c
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