[xcrysden] [EXTERNAL] Re: Problem with installing xcrysden on Mac OS 10.17.7 (Catalina)

[fink at snaggledworks.com]

On 2021-10-15 04:35, fink at snaggledworks.com wrote:
> On 10/14/21 2:57 PM, Vo, Trinh T (US 398K) wrote:
>> Thank you very much.  I am sorry for a long delay in response.  I have 
>> been dragged by other projects and do not have time to work on this 
>> until now.   I will look at the links you show and work on it to see 
>> if it works.
>> 
>> Trinh
>> 
>> From: <xcrysden-bounces at democritos.it> on behalf of Gavin Abo 
>> <gabo13279 at gmail.com>
>> Reply-To: XCrySDen mailing list <xcrysden at democritos.it>
>> Date: Monday, August 16, 2021 at 9:19 PM
>> To: "xcrysden at democritos.it" <xcrysden at democritos.it>
>> Subject: [EXTERNAL] Re: [xcrysden] Problem with installing xcrysden on 
>> Mac OS 10.17.7 (Catalina)
>> 
>> 
>> At [1] , I read Xcode 12 has a new "feature":
>> 
>> Clang now reports an error when you use a function without an explicit 
>> declaration when building C or Objective-C code for macOS 
>> (-Werror=implicit-function-declaration flag is on). This additional 
>> error detection unifies Clang’s behavior for iOS/tvOS and macOS 64-bit 
>> targets for this diagnostic. (49917738)
>> 
>> https://developer.apple.com/documentation/xcode-release-notes/xcode-12-release-notes<https://urldefense.us/v3/__https:/developer.apple.com/documentation/xcode-release-notes/xcode-12-release-notes__;!!PvBDto6Hs4WbVuu7!bF4ebOb40gqymR6j5ATvcPOTdqoNUR2jNOxgGyODnPbY3wofvyrUMLKSGVId8r2D1wK4$>
>> 
>> At [2], I read that gcc might default to clang with homebrew.  If that 
>> is the case, have you tried change it to use gcc [3]?
>> 
>> If that does not resolve the issue, I'm not a Mac user such that I 
>> unfortunately cannot be of much help with that.  Perhaps, there is a 
>> Mac user in the list that will respond if they have solution for that 
>> error.
>> [1] 
>> https://github.com/astropy/astropy/issues/10770<https://urldefense.us/v3/__https:/github.com/astropy/astropy/issues/10770__;!!PvBDto6Hs4WbVuu7!bF4ebOb40gqymR6j5ATvcPOTdqoNUR2jNOxgGyODnPbY3wofvyrUMLKSGVId8ou0i-ZE$>
>> [2] 
>> https://github.com/openvenues/libpostal/issues/511<https://urldefense.us/v3/__https:/github.com/openvenues/libpostal/issues/511__;!!PvBDto6Hs4WbVuu7!bF4ebOb40gqymR6j5ATvcPOTdqoNUR2jNOxgGyODnPbY3wofvyrUMLKSGVId8uRXlS2t$>
>> [3] 
>> https://apple.stackexchange.com/questions/245891/installed-gcc-with-homebrew-now-how-to-use-that-gcc-instead-of-clang<https://urldefense.us/v3/__https:/apple.stackexchange.com/questions/245891/installed-gcc-with-homebrew-now-how-to-use-that-gcc-instead-of-clang__;!!PvBDto6Hs4WbVuu7!bF4ebOb40gqymR6j5ATvcPOTdqoNUR2jNOxgGyODnPbY3wofvyrUMLKSGVId8ixlA3xZ$>
>> On 8/16/2021 11:02 AM, Vo, Trinh T (US 398K) wrote:
>> Dear Developer,
>> 
>> I compiled from source code of xcrysden on my new laptop, and I 
>> encountered the following errors:
>> 
>> #   Compiling XCRYSDEN C-code  #
>> #                              #
>> #------------------------------#
>> 
>> cd C; /Applications/Xcode.app/Contents/Developer/usr/bin/make 
>> "TOPDIR=/Users/trinhvo/xcrysden-1.6.2" compile
>> make  TOPDIR=/Users/trinhvo/xcrysden-1.6.2
>> gcc  -ffast-math -funroll-loops -fPIC -pedantic -Wall    
>> -I/usr/include/tcl8.6 -I/usr/local/Cellar/tcl-tk/8.6.11_1/include 
>> -I/usr/local/Cellar/tcl-tk/8.6.11_1/include    -c xcAppInit.c
>> xcAppInit.c:407:3: error: implicit declaration of function 
>> 'XGetErrorText' is
>>        invalid in C99 [-Werror,-Wimplicit-function-declaration]
>>    XGetErrorText(display,event->error_code,buffer,sizeof(buffer)-1);
>>    ^
>> xcAppInit.c:1834:7: warning: 'glDrawBuffer' is deprecated: first 
>> deprecated in
>>        macOS 10.14 - OpenGL API deprecated. (Define 
>> GL_SILENCE_DEPRECATION to
>>        silence these warnings) [-Wdeprecated-declarations]
>>        glDrawBuffer(GL_BACK);
> 
> Implicit declaration errors are due to not including a header
> declaring that function (this is critical with ARM chips). Homebrew's
> formula apparently doesn't pull in X11 -I calls, so it's naturally not
> finding X11/Xlib.h that declares XGetErrorText. A quick glance
> suggests that their Tcl/TK is Aqua and not X11 based. I've no idea
> what will happen when X11 based xcrysden interacts with Aqua Tcl/TK.
> 
> FWIW, Fink's xcrysden builds and works on Catalina and Big Sur.

Small correction: xcrysden (and FFTW3) currently uses gfortran9, which 
is currently failing for some Big Sur installs. But it works if 
transitioned to gfortran11.

> Hanspeter
> (Fink's xcrysden maintainer)