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apple-libunwind: update path to library (#9265)

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This commit is contained in:
Geoffrey Oxberry 2018-09-19 02:48:53 +01:00 committed by scheibelp
parent d14971b061
commit c971f6f1eb
1 changed files with 17 additions and 3 deletions
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20
var/spack/repos/builtin/packages/apple-libunwind/package.py
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@ -66,10 +66,24 @@ def install(self, spec, prefix):
@property
def libs(self):
""" Export the Apple libunwind library
"""Export the Apple libunwind library. The Apple libunwind library
cannot be linked to directly using an absolute path; doing so
will cause the linker to throw an error 'cannot link directly
with /usr/lib/system/libunwind.dylib' and the linker will
suggest linking with System.framework instead. Linking to this
framework is equivalent to linking with libSystem.dylib, which
can be confirmed on a macOS system by executing at a terminal
the command `ls -l
/System/Library/Frameworks/System.Framework` -- the file
"System" is a symlink to `/usr/lib/libSystem.B.dylib`, and
`/usr/lib/libSystem.dylib` also symlinks to this file.
Running `otool -L /usr/lib/libSystem.dylib` confirms that
it will link dynamically to `/usr/lib/system/libunwind.dylib`.
"""
libs = find_libraries('libunwind',
join_path(self.prefix.lib, 'system'),
libs = find_libraries('libSystem',
self.prefix.lib,
shared=True, recursive=False)
if libs:
return libs