On Fri, 17 May 2019, Jonas Vautherin via curl-library wrote:
I have been trying to cross-compile curl for iOS, using leetal's toolchain
[1] (and another, similar one that has the same issue).
When building for the "Xcode" cmake generator (cmake -G Xcode <...>), curl
build successfully. But when building for the "Unix Makefiles" generator, I
get an error saying that SIZEOF_LONG is undefined.
Seems lame. The curl cmake file has always checked that size since the first
day we had one. Although I don't know how good cmake is at doing that for
cross-compiles...
I see that SIZEOF_LONG is defined in curl_config.h.cmake [2], but I don't
really get where it comes from.
In cmake builds, here:
https://github.com/curl/curl/blob/f3e0f071b14fcb46a453f69bdf4e062bcaacf362/CMakeLists.txt#L798
(and obviouly similarly by configure, but that's not the topic here)
Should I set it somewhere manually?
You should at least set it somewhere. Exactly what the best way is for you to
set it, I leave to you.
And if yes, it is always right to say that it should be "8" on 64-bits
archs, and "4" on 32-bits archs (as described here [3])?
All 64 bit iOS targets will have it at 8 as far as I know, yes.
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