[MacPorts] #59227: commit 9e40a5a compiler_blacklist_versions pg breaks Portfile build(s)

[MacPorts]

#59227: commit 9e40a5a compiler_blacklist_versions pg breaks Portfile build(s)
--------------------+----------------------------
 Reporter:  TP75    |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  base    |    Version:  2.6.1
 Keywords:          |       Port:  libvpx port1.0
--------------------+----------------------------
 The recent update of ' **macports-
 ports/_resources/port1.0/group/compiler_blacklist_versions-1.0.tcl** '
 leads to issues.

     jmroot: ''This does remove
     support for blacklisting particular versions of apple-gcc-4.2, but
     nothing in the tree uses that, and nor should it really.''

 Unfortunately, this breaks 'GIMP2' and especially 'libvpx' builds.

 **Error: Unable to open port: invalid command name
 "compiler_blacklist_versions._get_compiler_version"**

 see [https://github.com/macports/macports-
 ports/commit/9e40a5a4b0d4b5221b55a83642762cf613863ff6#commitcomment-35432488
 comment on commit 9e40a5a "compiler_blacklist_versions pg: use base
 support"]

 {{{
 [...]
 DEBUG: epoch: in tree: 0 installed: 0
 DEBUG: libvpx 1.8.1_0 exists in the ports tree
 DEBUG: libvpx 1.8.1_0  is the latest installed
 DEBUG: libvpx 1.8.1_0  is active
 DEBUG: Merging existing variants '' into variants
 DEBUG: new fully merged portvariants:
 DEBUG: Changing to port directory:
 /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/multimedia/libvpx
 DEBUG: OS darwin/18.7.0 (macOS 10.14) arch i386
 DEBUG: Sourcing PortGroup compiler_blacklist_versions 1.0 from
 /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/_resources/port1.0/group/compiler_blacklist_versions-1.0.tcl
 DEBUG: Reading variant descriptions from
 /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/_resources/port1.0/variant_descriptions.conf
 DEBUG: Sourcing PortGroup muniversal 1.0 from
 /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/_resources/port1.0/group/muniversal-1.0.tcl
 DEBUG: compiler clang 1100.0.33.8 not blacklisted because it doesn't match
 {clang < 800}
 DEBUG: invalid command name
 "compiler_blacklist_versions._get_compiler_version"
     while executing
 "compiler_blacklist_versions._get_compiler_version ${configure.compiler}"
     invoked from within
 "if {[string match {macports-clang-3.[5-9]} ${configure.compiler}] ||
     [string match {macports-clang-[4-9].*} ${configure.compiler}] ||
     [string ..."
     (file "Portfile" line 96)
     invoked from within
 "source Portfile"
     invoked from within
 "$workername eval {source Portfile}"
     (procedure "mportopen" line 50)
     invoked from within
 "mportopen $porturl [array get interp_options] [array get variations]"
 Error: Unable to open port: invalid command name
 "compiler_blacklist_versions._get_compiler_version"
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 }}}

 Please note the error leads to hassle in handling the 'libpvx' Portfile
 with usual 'port' commands in addition to the a.m. failure.

 Hope this helps.

-- 
Ticket URL: <https://trac.macports.org/ticket/59227>
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