diff options
Diffstat (limited to 'mount/swap.configure')
| -rw-r--r-- | mount/swap.configure | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/mount/swap.configure b/mount/swap.configure index a557e1871..ebd67ced6 100644 --- a/mount/swap.configure +++ b/mount/swap.configure @@ -1,24 +1,36 @@ # Find out whether we can include <sys/swap.h> # and whether libc thinks that swapon() has two arguments. -# Of course this will fail if <sys/swap.h> exists but belongs -# to a libc that is not in use at present. + +# Prepare test CC=${CC-cc} compile="$CC -o conftest conftest.c >/dev/null 2>&1" rm -f conftest conftest.c swapargs.h + +# What include files shall we try? +# Unfortunately, recent versions of swap.h use PAGE_SIZE and hence need page.h +# It is used only in mkswap, not in swapon/swapoff, so we might just pick any +# random value (like #define PAGE_SIZE 4096) instead of including page.h. SWAPH= -if [ -f /usr/include/sys/swap.h ]; then SWAPH="#include <sys/swap.h>"; fi -echo $SWAPH > conftest.c +PAGEH= +if [ -f /usr/include/sys/swap.h ]; then + SWAPH="#include <sys/swap.h>" + if [ -f /usr/include/asm/page.h ]; then + PAGEH="#include <asm/page.h>" + fi +fi +echo $PAGEH > conftest.c +echo $SWAPH >> conftest.c echo '#include <unistd.h> main(){ exit(0); swapon("/dev/null", 0); }' >> conftest.c eval $compile if test -s conftest && ./conftest 2>/dev/null; then echo "#define SWAPON_HAS_TWO_ARGS" > swapargs.h + echo $PAGEH >> swapargs.h echo $SWAPH >> swapargs.h else echo > swapargs.h echo " Your libc thinks that swapon has 1 arg only. -Define SWAPON_NEEDS_TWO_ARGS in swapon.c if you want to use priorities. " 1>&2 fi rm -f conftest conftest.c |