Support Compilers Older Than GCC v4.7?

[wbraswell]

@eserte One or more of your FreeBSD machines on CPAN Testers has an old version of GCC v4.2, and RPerl requires GCC v4.7 or newer.

gccversion='4.2.1 20070831 patched [FreeBSD]'

http://www.cpantesters.org/cpan/report/a6a0a588-d7ca-11e6-9ece-bdfa082fd90d

My goal is to reach 100% CPAN testers coverage.

Is it better for you to upgrade the GCC yourself, or is it better for me to create Alien::gcc which will rebuild a new GCC from source (which will add extra runtime)?

g++ -DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include  -xc++ -c  -I"RPerl-2.403000-3KPshm/t" -IRPerl-2.403000-3KPshm/blib/lib -Ilib  -DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -Wno-unused-variable -DNO_XSLOCKS -Wno-deprecated -std=c++11 -Wno-reserved-user-defined-literal -Wno-literal-suffix -D__CPP__TYPES -D__TYPE__INTEGER__LONG -D__TYPE__NUMBER__DOUBLE -O3 -fomit-frame-pointer -march=native -g    -DVERSION=\"0.00\"  -DXS_VERSION=\"0.00\" -DPIC -fPIC "-I/usr/perl5.10.1/lib/5.10.1/amd64-freebsd/CORE"   eval_30_f5a5.c
cc1plus: error: unrecognized command line option "-Wno-reserved-user-defined-literal"
cc1plus: error: unrecognized command line option "-Wno-literal-suffix"
cc1plus: error: unrecognized command line option "-std=c++11"
*** [eval_30_f5a5.o] Error code 1

(Also seen on other CPAN tester machines, such as one by BinGOs http://www.cpantesters.org/cpan/report/a88bb812-d868-11e6-af13-afb6b8e3343c)

[eserte]

This machine (freebsd 9.2) has a gcc-4.8 package installed,additionally to the system's gcc.

$  gcc48 -v
Using built-in specs.
COLLECT_GCC=gcc48
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc48/gcc/x86_64-portbld-freebsd9.3/4.8.4/lto-wrapper
Target: x86_64-portbld-freebsd9.3
Configured with: ./../gcc-4.8.4/configure --disable-bootstrap --disable-nls --enable-gnu-indirect-function --libdir=/usr/local/lib/gcc48 --libexecdir=/usr/local/libexec/gcc48 --program-suffix=48 --with-as=/usr/local/bin/as --with-gmp=/usr/local --with-gxx-include-dir=/usr/local/lib/gcc48/include/c++/ --with-ld=/usr/local/bin/ld --with-libiconv-prefix=/usr/local --with-pkgversion='FreeBSD Ports Collection' --with-system-zlib --with-ecj-jar=/usr/local/share/java/ecj-4.5.jar --enable-languages=c,c++,objc,fortran,java --prefix=/usr/local --localstatedir=/var --mandir=/usr/local/man --infodir=/usr/local/info/gcc48 --build=x86_64-portbld-freebsd9.3
Thread model: posix
gcc version 4.8.4 (FreeBSD Ports Collection) 

[wbraswell]

@eserte
How can we tell your system to use the gcc48 compiler, without changing RPerl for everyone else?