diff options
Diffstat (limited to 'release/src/router/busybox/libbb/mk_loop_h.sh')
-rwxr-xr-x | release/src/router/busybox/libbb/mk_loop_h.sh | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/release/src/router/busybox/libbb/mk_loop_h.sh b/release/src/router/busybox/libbb/mk_loop_h.sh new file mode 100755 index 00000000..71c98737 --- /dev/null +++ b/release/src/router/busybox/libbb/mk_loop_h.sh @@ -0,0 +1,37 @@ +#!/bin/sh +# +# Figure out (i) the type of dev_t (ii) the defines for loop stuff +# +# Output of this script is normally redirected to "loop.h". + +# Since 1.3.79 there is an include file <asm/posix_types.h> +# that defines __kernel_dev_t. +# (The file itself appeared in 1.3.78, but there it defined __dev_t.) +# If it exists, we use it, or, rather, <linux/posix_types.h> which +# avoids namespace pollution. Otherwise we guess that __kernel_dev_t +# is an unsigned short (which is true on i386, but false on alpha). + +# BUG: This test is actually broken if your gcc is not configured to +# search /usr/include, as may well happen with cross-compilers. +# It would be better to ask $(CC) if these files can be found. + +if [ -f /usr/include/linux/posix_types.h ]; then + echo '#include <linux/posix_types.h>' + echo '#undef dev_t' + echo '#define dev_t __kernel_dev_t' +else + echo '#undef dev_t' + echo '#define dev_t unsigned short' +fi + +# Next we have to find the loop stuff itself. +# First try kernel source, then a private version. + +if [ -f /usr/include/linux/loop.h ]; then + echo '#include <linux/loop.h>' +else + echo '#include "real_loop.h"' +fi + +echo '#undef dev_t' + |