Please pull build improvements (and one code fix) from master#22

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kevin-dot-pyle wants to merge 14 commits intodavidmalcolm:masterfrom

kevin-dot-pyle:master

Commits on Jun 5, 2014

Mark gcc-c-api target 'install' as PHONY
Kevin Pyle
committed
Mark top level target 'install' as PHONY
Kevin Pyle
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Derive PLUGIN_NAME from $PYTHON
Kevin Pyle
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Support building for a gcc other than the host compiler
Kevin Pyle
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Combine sed expressions to reduce number of sed calls
Kevin Pyle
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Use $(MAKE) and -C when running sub-make processes
Kevin Pyle
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Avoid competing header generation in parallel builds
Kevin Pyle
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Extract gcc version without running a test program
Kevin Pyle
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Generate EXTRA_CFLAGS before recursing into gcc-c-api
Kevin Pyle
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Stage generated files to a temporary name
Kevin Pyle
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Fix make warning for autogenerated-casts.c override
Kevin Pyle
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Set missing docstrings to NULL ptr, not (char*)"NULL"
Kevin Pyle
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Avoid shell call for autogenerated-EXTRA_CFLAGS.txt
Kevin Pyle
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Enable cross-version compiling
Kevin Pyle
committed