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nouveau2netbsd revision 1.1 
      1 #!/bin/sh
      2 
      3 #	$NetBSD: nouveau2netbsd,v 1.1 2014/08/05 17:39:07 riastradh Exp $
      4 #
      5 # $ /path/to/nouveau2netbsd > /path/to/files.nouveau.new
      6 #
      7 # Run from the top-level Nouveau source directory.  This stupid kludge
      8 # reinterprets the GNU makefile as a BSD makefile to extract the source
      9 # file names, renames the ones that have obscure and/or colliding
     10 # basenames to be less obscure and unlikely (though not guaranteed) to
     11 # collide, and spits out config(5) directives for all of them.
     12 
     13 set -Ceu
     14 
     15 # Location of the Nouveau sources relative to $NETBSDSRCDIR.
     16 nouveau_top=external/bsd/drm2/dist/drm/nouveau
     17 
     18 # config(5) flag for the Nouveau driver.
     19 nouveau_flag=nouveau
     20 
     21 filemap=
     22 
     23 clean ()
     24 {
     25 	[ -z "$filemap" ] || rm -f -- "$filemap" || :
     26 }
     27 trap clean EXIT HUP INT TERM
     28 
     29 filemap="$(mktemp -t ${0##*/})"
     30 
     31 cat Makefile								\
     32 | sed -e 's,^include \(.*\)$,.include "\1",'				\
     33 | sed -e 's,^ifdef \(.*\)$,.if !empty(\1:M[yY][eE][sS]),'		\
     34 | sed -e 's,^endif$,.endif,'						\
     35 | make -f /dev/stdin -V nouveau-y src=.					\
     36 | tr ' ' '\n'								\
     37 | sed -e 's,^$,,'							\
     38 | sort -u								\
     39 | sed -e 's,\.o$,.c,'							\
     40 | awk '
     41 	BEGIN {
     42 		duplicates = 0
     43 	}
     44 	$1 ~ "nouveau_[^/]*$" {
     45 		if (seen[$1])
     46 			printf("Duplicate basename: %s\n", $1)
     47 		seen[$1] = $1
     48 		printf("%s %s\n", $1, $1)
     49 		next
     50 	}
     51 	{
     52 		if (index($1, "/")) {
     53 			dir = $1
     54 			sub("/[^/]*$", "/", dir)
     55 		} else {
     56 			dir = ""
     57 		}
     58 		base = $1
     59 		sub("^core/", "", base)
     60 		gsub("/", "_", base)
     61 		if (seen[base]) {
     62 			printf("Duplicate basename: %s %s\n", seen[base], $1) \
     63 			    > "/dev/stderr"
     64 			duplicates = 1
     65 		}
     66 		if (duplicates)
     67 			next
     68 		seen[base] = $1
     69 		printf("%s %s\n", $1, dir "nouveau_" base)
     70 	}
     71 	END {
     72 		if (duplicates) {
     73 			printf("Time to rewite me!\n") > "/dev/stderr"
     74 			exit 1
     75 		}
     76 	}
     77 ' >> "$filemap"
     78 
     79 while read from to; do
     80 	if [ "x$from" != "x$to" ]; then
     81 		mv -f -- "$from" "$to"
     82 	fi
     83         # Probably not necessary -- Linux tends not to have RCS ids --
     84         # but a precaution out of paranoia.
     85         cleantags "$to"
     86 	case $to in
     87 	*.c)
     88 		awk '
     89 			BEGIN {
     90 				done = 0
     91 				printf("/*\t%c%s%c\t*/\n\n", "$","NetBSD","$")
     92 			}
     93 			/^#include/ && !done {
     94 				printf("#include <sys/cdefs.h>\n")
     95 				printf("__KERNEL_RCSID(0, \"%c%s%c\");\n",
     96 				    "$","NetBSD","$")
     97 				printf("\n")
     98 				done = 1
     99 			}
    100 			{
    101 				print
    102 			}
    103 		' < "$to" > "$to".tmp
    104 		;;
    105 	esac
    106 	mv -f -- "$to".tmp "$to"
    107 	printf 'file\t%s\t%s\n' "$nouveau_top/$to" "$nouveau_flag"
    108 done < "$filemap" | sort
    109 
    110 # We sort the output again at the end because we renamed some files but
    111 # left $TOP/nouveau_* unchanged, so their sort order relative to the
    112 # ones that got renamed may have changed.
    113