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linux: improve support for cross-compiling
This CL adds support for a 'sysroot' GYP define, that should point to the target root filesystem for cross-compilation. It passes that argument to the compiler and linker which uses it to prefix its hard-coded path (e.g. /usr/include) It also points pkg-config to look for package configs there, and rewrite the paths to be prefixed by 'sysroot' (since pkg-config doesn't do it itself) Review URL: http://codereview.chromium.org/199016 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@25418 0039d316-1c4b-4281-b951-d872f2087c98
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piman@chromium.org
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Sep 4, 2009
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| #!/bin/sh | ||
|
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| root="$1" | ||
| if [ -z "$root" ] | ||
| then | ||
| echo "usage: $0 /path/to/sysroot [pkg-config-arguments]" >&2 | ||
| exit 1 | ||
| fi | ||
|
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| rewrite=`dirname $0`/rewrite_dirs.py | ||
|
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||
| shift | ||
| config_path=$root/usr/lib/pkgconfig:$root/usr/share/pkgconfig | ||
| PKG_CONFIG_PATH=$config_path pkg-config "$@" | $rewrite $root |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| #!/usr/bin/python | ||
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| """Rewrites paths in -I, -L and other option to be relative to a sysroot.""" | ||
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| import sys | ||
| import os | ||
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| REWRITE_PREFIX = ['-I', | ||
| '-idirafter', | ||
| '-imacros', | ||
| '-imultilib', | ||
| '-include', | ||
| '-iprefix', | ||
| '-iquote', | ||
| '-isystem', | ||
| '-L'] | ||
|
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| def RewritePath(path, sysroot): | ||
| """Rewrites a path by prefixing it with the sysroot if it is absolute.""" | ||
| if os.path.isabs(path): | ||
| path = path.lstrip('/') | ||
| return os.path.join(sysroot, path) | ||
| else: | ||
| return path | ||
|
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| def RewriteLine(line, sysroot): | ||
| """Rewrites all the paths in recognized options.""" | ||
| args = line.split() | ||
| count = len(args) | ||
| i = 0 | ||
| while i < count: | ||
| for prefix in REWRITE_PREFIX: | ||
| # The option can be either in the form "-I /path/to/dir" or | ||
| # "-I/path/to/dir" so handle both. | ||
| if args[i] == prefix: | ||
| i += 1 | ||
| try: | ||
| args[i] = RewritePath(args[i], sysroot) | ||
| except IndexError: | ||
| sys.stderr.write('Missing argument following %s\n' % prefix) | ||
| break | ||
| elif args[i].startswith(prefix): | ||
| args[i] = prefix + RewritePath(args[i][len(prefix):], sysroot) | ||
| i += 1 | ||
|
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| return ' '.join(args) | ||
|
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| def main(argv): | ||
| try: | ||
| sysroot = argv[1] | ||
| except IndexError: | ||
| sys.stderr.write('usage: %s /path/to/sysroot\n' % argv[0]) | ||
| return 1 | ||
|
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| for line in sys.stdin.readlines(): | ||
| line = RewriteLine(line.strip(), sysroot) | ||
| print line | ||
| return 0 | ||
|
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| if __name__ == '__main__': | ||
| sys.exit(main(sys.argv)) |
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