Re: [sage-devel] unable to build sage 8.9 on osx 10.14.6

['Justin C. Walker' via sage-devel]

> On May 11, 2020, at 12:08 , Robert Baertsch <robert.baert...@skytran.com> 
> wrote:
> 
> [gcc-7.4.0] In file included from 
> /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/sysctl.h:83:0,
> [gcc-7.4.0]                  from ../../src/gcc/config/darwin-driver.c:30:
> [gcc-7.4.0] 
> /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/ucred.h:94:2:
>  error: '_Atomic' does not name a type
> [gcc-7.4.0]   _Atomic u_long          cr_ref;  /* reference count */
> [gcc-7.4.0]   ^~~~~~~
> [gcc-7.4.0] make[6]: *** [darwin-driver.o] Error 1
> [gcc-7.4.0] make[5]: *** [all-stage2-gcc] Error 2
> [gcc-7.4.0] make[4]: *** [stage2-bubble] Error 2
> [gcc-7.4.0] make[3]: *** [all] Error 2

FWIW, I built sage 8.9 on 10.14.6 without problems, and sage’s gcc was not 
built.  I have Xcode 10.2.1 installed, and gcc tells me that it’s 

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr 
--with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/c++/4.2.1
Apple LLVM version 10.0.1 (clang-1001.0.46.4)
Target: x86_64-apple-darwin18.7.0
Thread model: posix
InstalledDir: 
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

The fact that the installation is trying to build gcc means that either you 
don’t have it installed, or it’s way out of date.  I think gcc 7.4 is way old 
for macOS 10.14.

You could try installing the command-line tools for Xcode 10.2.1 and see what 
happens.

HTH

Justin

--
Justin C. Walker, Curmudgeon-At-Large
Institute for the Absorption of Federal Funds
--------
If you're not confused,
You're not paying attention
--------



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