Andrew Johnson
a3d8531008
* Revert "Release Notes for PYTHON=python3" commit2612b47c3f. * Revert "Remove Python build dependency when LINKER_USE_RPATH=ORIGIN" commitf4c474eb77.
87 lines
2.9 KiB
Python
87 lines
2.9 KiB
Python
#!/usr/bin/env python
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#*************************************************************************
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# SPDX-License-Identifier: EPICS
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# EPICS BASE is distributed subject to a Software License Agreement found
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# in file LICENSE that is included with this distribution.
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#*************************************************************************
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from __future__ import print_function
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import sys
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import os
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from collections import OrderedDict # used as OrderedSet
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from argparse import ArgumentParser
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if os.environ.get('EPICS_DEBUG_RPATH','')=='YES':
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sys.stderr.write('%s'%sys.argv)
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P = ArgumentParser(description='''Compute and output -rpath entries for each of the given paths.
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Paths under --root will be computed as relative to --final .''',
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epilog='''
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eg. A library to be placed in /build/lib and linked against libraries in
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'/build/lib', '/build/module/lib', and '/other/lib' would pass:
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"makeRPath.py -F /build/lib -R /build /build/lib /build/module/lib /other/lib"
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which prints "-Wl,-rpath,$ORIGIN/. -Wl,-rpath,$ORIGIN/../module/lib -Wl,-rpath,/other/lib"
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''')
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P.add_argument('-F','--final',default=os.getcwd(), help='Final install location for ELF file')
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P.add_argument('-R','--root',default='', help='Root(s) of relocatable tree. Separate with :')
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P.add_argument('-O', '--origin', default='$ORIGIN')
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P.add_argument('path', nargs='*')
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args = P.parse_args()
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# eg.
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# target to be installed as: /build/bin/blah
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#
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# post-install will copy as: /install/bin/blah
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#
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# Need to link against:
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# /install/lib/libA.so
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# /build/lib/libB.so
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# /other/lib/libC.so
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#
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# Want final result to be:
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# -rpath $ORIGIN/../lib -rpath /other/lib \
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# -rpath-link /build/lib -rpath-link /install/lib
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fdir = os.path.abspath(args.final)
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roots = [os.path.abspath(root) for root in args.root.split(':') if len(root)]
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# find the root which contains the final location
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froot = None
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for root in roots:
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frel = os.path.relpath(fdir, root)
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if not frel.startswith('..'):
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# final dir is under this root
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froot = root
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break
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if froot is None:
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sys.stderr.write("makeRPath: Final location %s\nNot under any of: %s\n"%(fdir, roots))
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# skip $ORIGIN handling below...
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roots = []
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output = OrderedDict()
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for path in args.path:
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path = os.path.abspath(path)
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for root in roots:
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rrel = os.path.relpath(path, root)
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if not rrel.startswith('..'):
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# path is under this root
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# some older binutils don't seem to handle $ORIGIN correctly
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# when locating dependencies of libraries. So also provide
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# the absolute path for internal use by 'ld' only.
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output['-Wl,-rpath-link,'+path] = True
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# frel is final location relative to enclosing root
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# rrel is target location relative to enclosing root
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path = os.path.relpath(rrel, frel)
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break
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output['-Wl,-rpath,'+os.path.join(args.origin, path)] = True
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print(' '.join(output))
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