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On 2020-07-03 18:35, Xianwen Chen (陈贤文) wrote: |
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> |
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> In the Makefile, it is written that |
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> |
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> cc = g++ |
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> |
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> I would like to use sed to patch it so that it ebuild knows which g++ to |
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> use. For example, depending on whether ccache is set, ebuild shall know |
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> whether to use ccache. |
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First, you should suggest to upstream that they don't force a particular |
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compiler in their Makefile. One uncontroversial way to do this is by |
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setting the default only if the user does not already have one set, with |
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the "?=" assignment operator: |
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cc ?= g++ |
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Then, you should suggest that they change the name of that variable to |
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the relatively-standard "CXX" that is used for the C++ compiler: |
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CXX ?= g++ |
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Finally, in your ebuild, you should run |
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emake CXX=$(tc-getCXX) ... |
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to override the default CXX in the Makefile. Even if upstream doesn't |
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respond right away, you can patch the Makefile with these suggestions in |
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Gentoo and send them the patch. |
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