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authorMike Gelfand <mikedld@mikedld.com>2020-07-27 22:05:13 (GMT)
committerBrad King <brad.king@kitware.com>2020-07-28 13:09:43 (GMT)
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FindCURL: Fix list index check after search
Fix logic added by commit fc5afbe970 (FindCURL: support COMPONENTS to check features, 2018-11-28, v3.14.0-rc1~287^2~2). When searching for particular components and `curl-config` reports one of the components being searched for first in the list, `find_package` fails. This is due to the check that treats non-zero index in the list as success and zero index as failure, while documentation on `list(FIND)` states that failure to find an element results in return value of -1 (not 0). I'm hitting this when building cURL with support for HTTP and HTTPS protocols only, and then trying to `find_package(CURL COMPONENTS HTTP HTTPS)`. I'm using `if(NOT x EQUAL -1)` check form as it appears to be the most used throughout the modules. While fixing this issue I've looked through all the uses of `list(FIND)` in other modules but wasn't able to find improper use except here.
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