[Bug 262134] textproc/re-flex: ARM build fails due to -march=native

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262134

            Bug ID: 262134
           Summary: textproc/re-flex: ARM build fails due to -march=native
           Product: Ports & Packages
           Version: Latest
          Hardware: arm
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: gahr@FreeBSD.org
          Reporter: fuz@fuz.su
          Assignee: gahr@FreeBSD.org
             Flags: maintainer-feedback?(gahr@FreeBSD.org)
 Attachment #232024 text/plain
         mime type:

Created attachment 232024
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=232024&action=edit
textproc/re-flex 3.1.0 armv7 build log

While building textproc/re-flex from 2022Q1, I noticed that the build fails due
to an unsupported compiler flag:

===>  Building for re-flex-3.1.0
[  3% 1/32] /usr/bin/c++ -DHAVE_NEON -DReflexLib_EXPORTS
-I/wrkdirs/usr/ports/textproc/re-flex/work/RE-flex-3.1.0/include -O2 -pipe
-fstack-protector-strong -fno-strict-aliasing -O2 -pipe
-fstack-protector-strong -fno-strict-aliasing -fPIC -march=native -mfpu=neon
-std=gnu++11 -MD -MT CMakeFiles/ReflexLib.dir/lib/convert.cpp.o -MF
CMakeFiles/ReflexLib.dir/lib/convert.cpp.o.d -o
CMakeFiles/ReflexLib.dir/lib/convert.cpp.o -c
/wrkdirs/usr/ports/textproc/re-flex/work/RE-flex-3.1.0/lib/convert.cpp
FAILED: CMakeFiles/ReflexLib.dir/lib/convert.cpp.o 
/usr/bin/c++ -DHAVE_NEON -DReflexLib_EXPORTS
-I/wrkdirs/usr/ports/textproc/re-flex/work/RE-flex-3.1.0/include -O2 -pipe
-fstack-protector-strong -fno-strict-aliasing -O2 -pipe
-fstack-protector-strong -fno-strict-aliasing -fPIC -march=native -mfpu=neon
-std=gnu++11 -MD -MT CMakeFiles/ReflexLib.dir/lib/convert.cpp.o -MF
CMakeFiles/ReflexLib.dir/lib/convert.cpp.o.d -o
CMakeFiles/ReflexLib.dir/lib/convert.cpp.o -c
/wrkdirs/usr/ports/textproc/re-flex/work/RE-flex-3.1.0/lib/convert.cpp
c++: error: the clang compiler does not support '-march=native'
ninja: build stopped: subcommand failed.
*** Error code 1

Stop.
make: stopped in /usr/ports/textproc/re-flex

---

This is because -march=native is only supported on x86.  Furthermore, ports
should not use this option (see porter's handbook, §13.14.4) as it may cause
packages to be built that do not run on other machines of the same
architecture.

Please patch the port to build without -march=native.

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