crossgcc-1.0.tcl required compilers needs updating

[Gcenx]

I've noticed that i686-w64-mingw32-gcc/x86_64-w64-mingw32-gcc binaries are not compiling for anything below 10.10 accoring to ​https://www.gnu.org/software/gcc/gcc-11/changes.html a newer compiler is required.

Not opened a pull-request as I'm not sure the best way to handle this.

[mojca (Mojca Miklavec)]

At the moment it neither compiles on arm nor on < 10.10

• ​https://ports.macports.org/port/x86_64-w64-mingw32-gcc/

But we do have a working gcc 11:

• ​https://ports.macports.org/port/gcc11/

I'm not sure to which part of the changes you were referring. The requirement to use a C++11 capable compiler to build gcc? This should be solvable by properly tweaking the compiler selection.

[mojca (Mojca Miklavec)]

My suggestion would be to copy the code for compiler blacklist from the gcc11 port to the crossgcc-1.0 PortGroup and conditionally enable the blacklisting only if the GCC version is 11.0 or newer.

[Gcenx]

Oh I didn’t check it gcc11 was compiling below 10.10, with that being the case then wouldn’t it make more sense to add a fallback of gcc10.3 into the mingw-gcc ports?

[mojca (Mojca Miklavec)]

Doing an

if macOS version < 10.10 then
    use gcc 10.3
else
    use gcc 11.1

sound like a valid option, but picking the right compiler sounds easy enough that it doesn't seem worth the troubles to have to maintain multiple versions of gcc in tons of cross-compilers that we are shipping.

[Gcenx]

I must have misread the above thinking gcc11 didn’t compile below 10.10.

Yeah don’t wanna split gcc versions within mingw-gcc if possible.

[kencu (Ken)]

Indeed, Iain tells me that gcc11 compiles on everything back to 10.4 Tiger, but it requires a c++11 compiler to build now, so there will be at least one stepping stone compiler to use.

[Gcenx]

The pull-request to resolve the gcc problem is ​https://github.com/macports/macports-ports/pull/11039

And another for mingw-ctr issue ​https://github.com/macports/macports-ports/pull/11113

[Gcenx]

In ac6b1c26495644c381faff5481c1bf31d552a65e/macports-ports (master):

mingw-*: Fix everything and update to v9.0.0

• crossgcc Portgroup fix compiling gcc-11 on 10.10 and lower (compiler blacklist from gcc11)
• Mingw-ctr Fix build (don't build in parallel)
• Mingw-gcc Build on ARM64/Apple Silicon (patch from gcc-11.1.0-arm branch)
• Mingw-gcc Change patch names (fix lint warnings)
• Mingw-w64 Updated to v9.0.0

Closes #62901