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Fix a Sparse warning about redefinition of offsetof()

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Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2009-09-12 09:58:46 +00:00
parent 72cf2d4f0e
commit de5071c551
2 changed files with 17 additions and 1 deletions
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15
configure vendored
View file

@ -1602,6 +1602,18 @@ if test "$darwin" != "yes" -a "$mingw32" != "yes" -a "$solaries" != yes -a \
libs_softmmu="-lutil $libs_softmmu"
fi
##########################################
# check if the compiler defines offsetof
need_offsetof=yes
cat > $TMPC << EOF
#include <stddef.h>
int main(void) { struct s { int f; }; return offsetof(struct s, f); }
EOF
if compile_prog "" "" ; then
need_offsetof=no
fi
# End of CC checks
# After here, no more $cc or $ld runs
@ -1901,6 +1913,9 @@ fi
if test "$fdt" = "yes" ; then
echo "CONFIG_FDT=y" >> $config_host_mak
fi
if test "$need_offsetof" = "yes" ; then
echo "CONFIG_NEED_OFFSETOF=y" >> $config_host_mak
fi
# XXX: suppress that
if [ "$bsd" = "yes" ] ; then

3
osdep.h
View file

@ -2,6 +2,7 @@
#define QEMU_OSDEP_H
#include <stdarg.h>
#include <stddef.h>
#ifdef __OpenBSD__
#include <sys/types.h>
#include <sys/signal.h>
@ -27,7 +28,7 @@
#define unlikely(x) __builtin_expect(!!(x), 0)
#endif
#ifndef offsetof
#ifdef CONFIG_NEED_OFFSETOF
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
#endif
#ifndef container_of