libgcrypt fails to compile with Xcode 9 against iOS 11 SDK

[Chris Ballinger]

An additional problem I found in v1.8.1 with Xcode 9. The
mpih-add1-asm.S asm fails to compile for arm64. Reverting to 1.7.9 also
does not fix the issue.

mpih-add1-asm.S:37:1: error: unknown directive
.type _gcry_mpih_add_n,%function
^
mpih-add1-asm.S:71:1: error: unknown directive
.size _gcry_mpih_add_n,.-_gcry_mpih_add_n;
^


On Fri, Sep 29, 2017 at 12:00 PM, Chris Ballinger <chris at chatsecure.org>
wrote:

> This affects 1.7.x (and probably lower) through 1.8.1. The issue is that
> calling 'system()' is not allowed on iOS and is a now compile error with
> the latest Xcode 9 / iOS 11 toolchain.
>
> For now I will just comment out the system() calls, but I'll submit a
> better ifdef patch when I get around to it.
>
>
> random.c:556:11: error: 'system' is unavailable: not available on iOS
>
>       if (system (cmdline))
>
>           ^
>
> /Applications/Xcode.app/Contents/Developer/Platforms/
> iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator11.0.sdk/usr/include/stdlib.h:195:6:
> note:
>
>       'system' has been explicitly marked unavailable here
>
> int      system(const char *) __DARWIN_ALIAS_C(system);
>
>          ^
>
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