diff options
Diffstat (limited to 'libstdc++-v3/python/hook.in')
| -rw-r--r-- | libstdc++-v3/python/hook.in | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/libstdc++-v3/python/hook.in b/libstdc++-v3/python/hook.in index fe7c0722484..f7bf1afb44d 100644 --- a/libstdc++-v3/python/hook.in +++ b/libstdc++-v3/python/hook.in @@ -16,9 +16,37 @@ import sys import gdb +import os +import os.path + +pythondir = '@pythondir@' +libdir = '@toolexeclibdir@' + +# Update module path. We want to find the relative path from libdir +# to pythondir, and then we want to apply that relative path to the +# directory holding the objfile with which this file is associated. +# This preserves relocatability of the gcc tree. + +# Do a simple normalization that removes duplicate separators. +pythondir = os.path.join (*['/'] + pythondir.split (os.sep)) +libdir = os.path.join (*['/'] + libdir.split (os.sep)) + +prefix = os.path.commonprefix ([libdir, pythondir]) +# In some bizarre configuration we might have found a match in the +# middle of a directory name. +if prefix[-1] != '/': + prefix = os.path.dirname (prefix) + +# Strip off the prefix. +pythondir = pythondir[len (prefix):] +libdir = libdir[len (prefix):] + +# Compute the ".."s needed to get from libdir to the prefix. +dotdots = ('..' + os.sep) * len (libdir.split (os.sep)) + +objfile = gdb.current_objfile ().filename +dir = os.path.join (os.path.dirname (objfile), dotdots, pythondir) -# Update module path. -dir = '@dir@' if not dir in sys.path: sys.path.insert(0, dir) |