f244cbd5
 Hu Chunming
ffmpeg支持h264编码
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#!/bin/sh
# Output a Makefile rule describing the dependencies of a given source file.
# Expected arguments are $(CC) $(CFLAGS) $(SRC) $(OBJ)
set -f
[ -n "$1" ] && [ -n "$3" ] && [ -n "$4" ] || exit 1
# Add flags to only perform syntax checking and output a list of included files
# Discard all output other than included files
# Convert '\' directory separators to '/'
# Remove system includes (hack: check for "/Program Files" string in path)
# Add the source file itself as a dependency
deps="$($1 $2 -nologo -showIncludes -W0 -Zs "$3" 2>&1 |
grep '^Note: including file:' |
sed 's/^Note: including file:[[:space:]]*\(.*\)$/\1/; s/\\/\//g' |
sed '/\/[Pp]rogram [Ff]iles/d')
$3"
# Convert Windows paths to Unix paths if possible
if command -v cygpath >/dev/null 2>&1 ; then
IFS='
'
deps="$(cygpath -u -- $deps)"
elif grep -q 'Microsoft' /proc/sys/kernel/osrelease 2>/dev/null ; then
# Running under WSL. We don't have access to cygpath but since the Windows
# file system resides under "/mnt/<drive_letter>/" we can simply replace
# "C:" with "/mnt/c". This command uses a GNU extension to sed but that's
# available on WSL so we don't need to limit ourselves by what POSIX says.
deps="$(printf '%s' "$deps" | sed 's/^\([a-zA-Z]\):/\/mnt\/\L\1/')"
fi
# Escape characters as required to create valid Makefile file names
escape() {
sed 's/ /\\ /g; s/#/\\#/g; s/\$/\$\$/g'
}
# Remove prefixes that are equal to the working directory
# Sort and remove duplicate entries
# Escape and collapse the dependencies into one line
deps="$(printf '%s' "$deps" |
sed "s/^$(pwd | sed 's/\//\\\//g')\///; s/^\.\///" |
sort | uniq |
escape | tr -s '\n\r' ' ' | sed 's/^ *\(.*\) $/\1/')"
# Escape the target file name as well
target="$(printf '%s' "$4" | escape)"
printf '%s: %s\n' "$target" "$deps"
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