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      1 #!/bin/sh
      2 
      3 #	$NetBSD: nouveau2netbsd,v 1.7 2024/07/02 20:09:01 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 : ${MV:=mv}
     16 
     17 # Location of the Nouveau sources relative to $NETBSDSRCDIR.
     18 nouveau_top=external/bsd/drm2/dist/drm/nouveau
     19 
     20 # config(5) flag for the Nouveau driver.
     21 nouveau_flag=nouveau
     22 
     23 filemap=
     24 
     25 clean ()
     26 {
     27 	[ -z "$filemap" ] || rm -f -- "$filemap" || :
     28 }
     29 trap clean EXIT HUP INT TERM
     30 
     31 filemap="$(mktemp -t ${0##*/})"
     32 
     33 cat Kbuild								\
     34 | sed -e 's,^include \(.*\)$,.include "\1",'				\
     35 | sed -e 's,^ifdef \(.*\)$,.if !empty(\1:M[yY]),'			\
     36 | sed -e 's,^endif$,.endif,'						\
     37 | env									\
     38 	env CONFIG_ACPI=y						\
     39 	env CONFIG_COMPAT=y						\
     40 	env CONFIG_DRM_NOUVEAU_SVM=y					\
     41 	env CONFIG_LEDS_CLASS=y						\
     42 	env CONFIG_NOUVEAU=y						\
     43 	env CONFIG_NOUVEAU_BACKLIGHT=y					\
     44 	env CONFIG_X86=y						\
     45 	env src=.							\
     46 	make -f /dev/stdin -V '$(nouveau-y)'				\
     47 | tr ' ' '\n'								\
     48 | sed -e 's,^$,,'							\
     49 | sort -u								\
     50 | sed -e 's,\.o$,.c,'							\
     51 | awk '
     52 	BEGIN {
     53 		duplicates = 0
     54 	}
     55 	$1 ~ "nouveau_[^/]*$" {
     56 		if (seen[$1])
     57 			printf("Duplicate basename: %s\n", $1)
     58 		seen[$1] = $1
     59 		printf("%s %s\n", $1, $1)
     60 		next
     61 	}
     62 	{
     63 		if (index($1, "/")) {
     64 			dir = $1
     65 			sub("/[^/]*$", "/", dir)
     66 		} else {
     67 			dir = ""
     68 		}
     69 		base = $1
     70 		sub("^core/", "", base)
     71 		gsub("/", "_", base)
     72 		if (seen[base]) {
     73 			printf("Duplicate basename: %s %s\n", seen[base], $1) \
     74 			    > "/dev/stderr"
     75 			duplicates = 1
     76 		}
     77 		if (duplicates)
     78 			next
     79 		seen[base] = $1
     80 		printf("%s %s\n", $1, dir "nouveau_" base)
     81 	}
     82 	END {
     83 		if (duplicates) {
     84 			printf("Time to rewite me!\n") > "/dev/stderr"
     85 			exit 1
     86 		}
     87 	}
     88 ' >> "$filemap"
     89 
     90 while read from to; do
     91 	# If the move already happened, that's fine: the makefile
     92 	# detects duplicates.
     93 	if [ "x$from" != "x$to" -a \! -f "$to" ]; then
     94 		${MV} -f -- "$from" "$to"
     95 	fi
     96 	printf 'file\t%s\t%s\n' "$nouveau_top/$to" "$nouveau_flag"
     97 done < "$filemap" | sort
     98 
     99 # We sort the output again at the end because we renamed some files but
    100 # left $TOP/nouveau_* unchanged, so their sort order relative to the
    101 # ones that got renamed may have changed.
    102