[gambit-list] on macos: clang over gcc

Ben mailist.ben at srctxt.com
Fri Oct 6 09:54:10 EDT 2017


to my defense: the INSTALL instructions of Gambit and its different
combinations are not so trivial and this specific trinity cannot be
found in this exact form. But it now that I know it makes perfect
sense... 

It did compile, even with the -j8 switch

thanks alot 



On Fri, Oct 6, 2017, at 01:55 PM, Marc Feeley wrote:
> Please read the build steps in the INSTALL.txt file…  When freshly cloned
> from github, Gambit needs to be bootstrapped, so you need to *precisely*
> follow these steps:
> 
>   % ./configure --enable-single-host CC=gcc-6
>   % make current-gsc-boot
>   % make from-scratch
> 
> The “./configure …” followed by “make” that you are using is appropriate
> when building from a release of Gambit, for example v4.8.8 with no other
> patches applied.
> 
> So above the “make current-gsc-boot” builds the latest release of Gambit
> by using git to checkout the latest release (v4.8.8 currently) and then
> creates boot/gsc/gsc which is then used by the “make from-scratch” to
> bootstrap Gambit using the repo HEAD.
> 
> Marc
> 
> 
> 
> > On Oct 6, 2017, at 3:51 AM, Ben <mailist.ben at srctxt.com> wrote:
> > 
> > maybe this is of interest ...
> > 
> > I couldn't install gcc-7 with brew but gcc-6. 
> > 
> > This will not compile:
> > 
> >    ./configure --enable-single-host CC=gcc-6
> >     make
> > ....
> > making all in lib
> > gcc-6 -Wno-unused -Wno-write-strings -Wdisabled-optimization -O1 -fwrapv
> > -fno-strict-aliasing -fno-trapping-math -fno-math-errno
> > -fschedule-insns2 -fomit-frame-pointer -fPIC -fno-common -mieee-fp
> > -mpc64   -I"../include" -c -o "_kernel.o" -I. -DHAVE_CONFIG_H
> > -D___GAMBITDIR="\"/usr/local/Gambit\"" -D___SYS_TYPE_CPU="\"x86_64\""
> > -D___SYS_TYPE_VENDOR="\"apple\"" -D___SYS_TYPE_OS="\"darwin16.7.0\""
> > -D___CONFIGURE_COMMAND="\"./configure '--enable-single-host'
> > 'CC=gcc-6'"\" -D___OBJ_EXTENSION="\".o\"" -D___EXE_EXTENSION="\"\""
> > -D___BAT_EXTENSION="\"\"" -D___PRIMAL _kernel.c -D___LIBRARY
> > _kernel.c: In function '___H__20___kernel':
> > _kernel.c:6346:27: error: void value not ignored as it ought to be
> >    ___FLONUM_VAL(___ARG2) = ___set_heartbeat_interval
> >    (___FLONUM_VAL(___ARG1));
> >                           ^
> > make[1]: *** [_kernel.o] Error 1
> > make: *** [all-recursive] Error 1
> > 
> > 
> > On Wed, Sep 20, 2017, at 04:37 PM, Marc Feeley wrote:
> >> By default the configure script searches for gcc before looking for
> >> clang.  However… X-code installs “clang” and also “gcc”, and that “gcc”
> >> is not the GNU gcc… it is a wrapper around clang/llvm.  So to install the
> >> GNU gcc you need to use homebrew like this:
> >> 
> >> % brew install gcc-7
> >> 
> >> and then tell the configure script to use that compiler:
> >> 
> >> % ./configure --enable-single-host CC=gcc-7
> >> 
> >> You will notice a dramatic decrease in compilation time and in execution
> >> time (about 3 or 4 times faster execution if I recall correctly).  On my
> >> machine a “make -j8” after a “make clean” takes 30 seconds.
> >> 
> >> Marc
> >> 
> >> 
> >> 
> >>> On Sep 20, 2017, at 3:18 AM, Ben <mailist.ben at srctxt.com> wrote:
> >>> 
> >>> hi
> >>> On macos sierra running the ./configure script gives me the following
> >>> message:
> >>> 
> >>> *** The clang compiler is being used.  Please be aware that the build 
> >>> ***
> >>> *** may take a very long time (over 30 minutes on a fairly fast       
> >>> ***
> >>> *** machine with clang 3.0).  Configuring with GNU GCC will give a    
> >>> ***
> >>> *** faster build (1 min on the same machine with GNU GCC 4.2.1) and   
> >>> ***
> >>> *** the executable will be faster.    
> >>> 
> >>> 
> >>> What can I do to enforce GCC? I cannot see any specific configure
> >>> --options
> >>> 
> >>> Attached you'll find the entire configure log.
> >>> 
> >>> Thanks,
> >>> Ben
> >>> 
> >>> <configure.log>_______________________________________________
> >>> Gambit-list mailing list
> >>> Gambit-list at iro.umontreal.ca
> >>> https://webmail.iro.umontreal.ca/mailman/listinfo/gambit-list
> >> 
> 



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