Solved: Strange things when trying to build math/arb

On 10/23/21 11:19 AM, Stephen Montgomery-Smith wrote:
> I get the weirdest errors when I try to build the port math/arb, which 
> was recently updated to version 2.21.0.  Maybe it is a compiler error?
> 
> Here is a sample:
> 
> /usr/bin/cc -DARB_BUILD_DLL -Darb_EXPORTS -I/usr/local/include 
> -I/usr/ports/math/arb/work/arb-2.21.0 -O2 -pipe -fstack-protector-strong 
> -fno-strict-aliasing -O2 -pipe -fstack-protector-strong 
> -fno-strict-aliasing -fPIC -pthread -MD -MT 
> CMakeFiles/arb.dir/acb_hypgeom/gamma_taylor.c.o -MF 
> CMakeFiles/arb.dir/acb_hypgeom/gamma_taylor.c.o.d -o 
> CMakeFiles/arb.dir/acb_hypgeom/gamma_taylor.c.o -c 
> /usr/ports/math/arb/work/arb-2.21.0/acb_hypgeom/gamma_taylor.c
> /usr/ports/math/arb/work/arb-2.21.0/acb_hypgeom/gamma_taylor.c:48:22:
> /usr/ports/math/arb/work/arb-2.21.0/acb_hypgeom/gamma_taylor.c:87:35: 
> error: use of undeclared identifier 'arb_hypgeom_gamma_coeffs'; did you 
> mean 'arb_hypgeom_gamma_lower'?
>          mag_mul_2exp_si(err, err, arb_hypgeom_gamma_coeffs[N].exp);
>                                    ^~~~~~~~~~~~~~~~~~~~~~~~
> It is as though the c compiler failed to preprocess the source code, and 
> forget the include files.
> 
> Note, if I add USE_GCC=yes to the port Makefile, it builds just fine.
> 
> I am using:
> 
> cc --version
> FreeBSD clang version 10.0.1 (git@github.com:llvm/llvm-project.git 
> llvmorg-10.0.1-0-gef32c611aa2)
> 
> uname -a
> FreeBSD wilberforce 12.3-PRERELEASE FreeBSD 12.3-PRERELEASE 
> stable/12-n234170-35f1d655819 GENERIC  amd64
> 

It was because I was using portupgrade.  It referenced the include files 
in /usr/local/include, that is, the arb include files that existed before.