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[sr #110271] libSDL2 fails with autoconf 2.70
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From: |
Ross Burton |
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Subject: |
[sr #110271] libSDL2 fails with autoconf 2.70 |
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Date: |
Thu, 16 Jul 2020 12:36:12 -0400 (EDT) |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15 |
Follow-up Comment #1, sr #110271 (project autoconf):
Discussion on the list:
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This is a classic M4 quoting bug. The macro should quote the third
argument to AC_CACHE_CHECK (and really, should quote all the arguments).
The problem is that diversions do not work properly during arugment
collection so AC_REQUIRE (which depends on diversions) and many other
macros will not work properly if it is expanded during argument
collection.
Quote the arguments to AC_CACHE_CHECK and the prerequisite macros will
get expanded in the correct order.
---
I've tested this is the case and this can be closed.
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