It looks to me like there could be a bad interaction between compiler headers 
(probably installed by brew)
in /usr/local and system headers.
If it is not then I would think there could be a bug for upstream givaro.

François

> On 26/01/2020, at 12:21 PM, Andrew <andrew.mat...@gmail.com> wrote:
> 
> On sage-release Justin C Walker has reported successfully compiled sage 
> 9.1.beta1 on a 2019 MBP, 8-core Core i9 running 10.5.2. 
> 
> I am running 10.5.2 on 2016 MBP, 4-core Core i7 and, as previously reported, 
> I whenever I try to compile I get stuck with:
> 
> 
> Error building Sage.
> 
> The following package(s) may have failed to build (not necessarily
> during this run of 'make all-build'):
> * package: givaro-4.1.1
>   log file: /usr/local/src/sage/logs/pkgs/givaro-4.1.1.log
>   build directory: /usr/local/src/sage/local/var/tmp/sage/build/givaro-4.1.1
> 
> Evidentally, I have screwed something up but for the life of me I can't 
> figure what. Previously I did success in getting 8.9 to compille on a 
> similarly configured imac in my office but I could not compile 9.1.beta0 
> there either. (I'm travelling at the moment so I haven'ttried to troubleshoot 
> the imac yet...I was hoping that it would compile in my office and that I 
> could then compare the install logs, but that didn't work out.)
> 
> Last time I asked on sage-dev no one was able to figure out what my problem 
> was. I am posting again in the hope that some one will be able to suggest 
> doing something different now. The givaro log file and the full install log 
> are attached. 
> 
> I am trying to compile using:
> 
>     make distclean;
>     CC=clang CXX=clang++ FC=gfortran ./configure;
>     MAKE="make -j4" make build
> 
> I have installed xcode and the command line tools, I have accepted the xcode 
> licence, opened xcode, run xcode-select --install etc. 
> 
> My system specs are:
> 
> sw_vers:
>   ProductName:    Mac OS X
>   ProductVersion:    10.15.2
>   BuildVersion:    19C57
> /usr/bin/xcodebuild -version
>   Xcode 11.3.1
>   Build version 11C504
> 
> I am using homebrew (list of installed homebrew fomrula below)
> 
> I have tried uninstalling xcode and the command-line tools and then 
> reinstalling it. Uninstalling and then reinstalling all the homebrew 
> packages. I have tried removing anything vaguely objectionable from my path 
> and have trolled through stackexchange applying potential fixes without luck. 
> 
> The problem seems to be that sage is not finding the header files. I don't 
> any compiler flags (CFLAGS, CXXFLAGS, CPPFLAGS, LDFLAGS, ...), set although I 
> have tried various combinations of these without success.
> 
> Any suggestions would be very much appreciated!
> 
> Andrew
> 
> --
> The homebrew packages that  have installed are:
> 
> adns            glog            libunistring        poppler
> alluxio            gmp            libusb            python
> aom            gnu-sed            libvidstab        python@2
> arb            gnupg            libvorbis        qpdf
> aspell            gnutls            libvpx            qt
> autoconf        gpatch            libyaml            r
> automake        graphite2        little-cms2        readline
> bash            gsl            lua            rsync
> bash-completion        harfbuzz        lzo            rtmpdump
> boost            icu4c            macvim            rubberband
> cairo            ilmbase            make            ruby
> ceres-solver        imagemagick        metis            sdl2
> cimg            isl            mpfi            shared-mime-info
> cmake            jpeg            mpfr            snappy
> coreutils        lame            nettle            speex
> cscope            leptonica        node            sqlite
> djvu2pdf        libass            npth            suite-sparse
> djvulibre        libassuan        nspr            swig
> eigen            libbluray        nss            tbb
> ffmpeg            libde265        ntl            tesseract
> fish            libdvdcss        numpy            texinfo
> flac            libevent        openblas        the_silver_searcher
> flint            libffi            opencore-amr        theora
> fontconfig        libgcrypt        opencv            tkdiff
> freetype        libgpg-error        openexr            unbound
> frei0r            libheif            openjpeg        unrar
> fribidi            libidn2            openssl            webkit2png
> gawk            libksba            openssl@1.1        webp
> gcc            libmpc            opus            wget
> gd            libogg            p11-kit            x264
> gdbm            libomp            p7zip            x265
> gettext            libpng            pari            xvid
> gflags            libsamplerate        pcre            xz
> ghostscript        libsndfile        pcre2            yarn
> giflib            libsoxr            perl            yasm
> git            libtasn1        pinentry
> git-extras        libtiff            pixman
> glib            libtool            pkg-config
> 
> 
> 
> 
> 
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> <install.log.gz><givaro-4.1.1.log>

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