diff options
| -rwxr-xr-x | scripts/gen_build_files.sh | 100 |
1 files changed, 47 insertions, 53 deletions
diff --git a/scripts/gen_build_files.sh b/scripts/gen_build_files.sh index 09a95b507..1c1edcc12 100755 --- a/scripts/gen_build_files.sh +++ b/scripts/gen_build_files.sh @@ -9,43 +9,54 @@ mkdir include 2>/dev/null srctree="$1" +status() { printf ' %-8s%s\n' "$1" "$2"; } +gen() { status "GEN" "$@"; } +chk() { status "CHK" "$@"; } + +generate() +{ + local src="$1" dst="$2" header="$3" insert="$4" + #chk "${dst}" + ( + echo "${header}" + if grep -qs '^INSERT$' "${src}"; then + sed -n '1,/^INSERT$/p' "${src}" + echo "${insert}" + sed -n '/^INSERT$/,$p' "${src}" + else + if [ -n "${insert}" ]; then + echo "ERROR: INSERT line missing in: ${src}" 1>&2 + fi + cat "${src}" + fi + ) | sed '/^INSERT$/d' > "${dst}.tmp" + if ! cmp -s "${dst}" "${dst}.tmp"; then + gen "${dst}" + mv "${dst}.tmp" "${dst}" + else + rm -f "${dst}.tmp" + fi +} + # (Re)generate include/applets.h -src="$srctree/include/applets.src.h" -dst="include/applets.h" s=`sed -n 's@^//applet:@@p' -- "$srctree"/*/*.c "$srctree"/*/*/*.c` -old=`cat "$dst" 2>/dev/null` -# Why "IFS='' read -r REPLY"?? -# This atrocity is needed to read lines without mangling. -# IFS='' prevents whitespace trimming, -# -r suppresses backslash handling. -new=`echo "/* DO NOT EDIT. This file is generated from applets.src.h */" -while IFS='' read -r REPLY; do - test x"$REPLY" = x"INSERT" && REPLY="$s" - printf "%s\n" "$REPLY" -done <"$src"` -if test x"$new" != x"$old"; then - echo " GEN $dst" - printf "%s\n" "$new" >"$dst" -fi +generate \ + "$srctree/include/applets.src.h" \ + "include/applets.h" \ + "/* DO NOT EDIT. This file is generated from applets.src.h */" \ + "${s}" # (Re)generate include/usage.h -src="$srctree/include/usage.src.h" -dst="include/usage.h" # We add line continuation backslash after each line, # and insert empty line before each line which doesn't start # with space or tab # (note: we need to use \\\\ because of ``) s=`sed -n -e 's@^//usage:\([ \t].*\)$@\1 \\\\@p' -e 's@^//usage:\([^ \t].*\)$@\n\1 \\\\@p' -- "$srctree"/*/*.c "$srctree"/*/*/*.c` -old=`cat "$dst" 2>/dev/null` -new=`echo "/* DO NOT EDIT. This file is generated from usage.src.h */" -while IFS='' read -r REPLY; do - test x"$REPLY" = x"INSERT" && REPLY="$s" - printf "%s\n" "$REPLY" -done <"$src"` -if test x"$new" != x"$old"; then - echo " GEN $dst" - printf "%s\n" "$new" >"$dst" -fi +generate \ + "$srctree/include/usage.src.h" \ + "include/usage.h" \ + "/* DO NOT EDIT. This file is generated from usage.src.h */" \ + "${s}" # (Re)generate */Kbuild and */Config.in { cd -- "$srctree" && find . -type d; } | while read -r d; do @@ -55,42 +66,25 @@ fi dst="$d/Kbuild" if test -f "$src"; then mkdir -p -- "$d" 2>/dev/null - #echo " CHK $dst" s=`sed -n 's@^//kbuild:@@p' -- "$srctree/$d"/*.c` - - old=`cat "$dst" 2>/dev/null` - new=`echo "# DO NOT EDIT. This file is generated from Kbuild.src" - while IFS='' read -r REPLY; do - test x"$REPLY" = x"INSERT" && REPLY="$s" - printf "%s\n" "$REPLY" - done <"$src"` - if test x"$new" != x"$old"; then - echo " GEN $dst" - printf "%s\n" "$new" >"$dst" - fi + generate \ + "${src}" "${dst}" \ + "# DO NOT EDIT. This file is generated from Kbuild.src" \ + "${s}" fi src="$srctree/$d/Config.src" dst="$d/Config.in" if test -f "$src"; then mkdir -p -- "$d" 2>/dev/null - #echo " CHK $dst" s=`sed -n 's@^//config:@@p' -- "$srctree/$d"/*.c` - - old=`cat "$dst" 2>/dev/null` - new=`echo "# DO NOT EDIT. This file is generated from Config.src" - while IFS='' read -r REPLY; do - test x"$REPLY" = x"INSERT" && REPLY="$s" - printf "%s\n" "$REPLY" - done <"$src"` - if test x"$new" != x"$old"; then - echo " GEN $dst" - printf "%s\n" "$new" >"$dst" - fi + generate \ + "${src}" "${dst}" \ + "# DO NOT EDIT. This file is generated from Config.src" \ + "${s}" fi done -# Last read failed. This is normal. Don't exit with its error code: exit 0 |