[LLVMbugs] [Bug 16873] New: cross-compile configure does not propagate flags to configures run from Makefile

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16873

            Bug ID: 16873
           Summary: cross-compile configure does not propagate flags to
                    configures run from Makefile
           Product: Build scripts
           Version: 3.2
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Makefiles
          Assignee: unassignedbugs at nondot.org
          Reporter: default_357-line at yahoo.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

When configuring LLVM 3.2 for cross compilation, additional flags may be
required (such as --with-python=/usr/bin/python2.7). The generated Makefile
contains a further configure call in cross-compile-build-tools, but this
configure is not aware of the --with-python specified on the command line and
fails.

Reproduce:

1. have an unsupported /usr/bin/python, such as 3.2, and a working version in
/usr/bin/python2.7 or such
2. configure llvm 3.2 for crosscompilation (configure --host=i686-mingw32
--with-python=/usr/bin/python2.7)
3. make

Make will run further configures, which will be unable to find a working python
and fail.

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