Make gcc14 the primary version on Tiger+

gcc7 is obsolete at this point and fails to build a lot of software.
Enables gcc14 for all platforms as sets it as default.

gcc14 is built using gcc10-bootstrap on 10.4 and 10.5.

This does not enable other versions of gcc between 9 and 14
because there doesn't really seem to be a reason to use those
given that gcc14 is available (this can be revisited later if turns out
that someone needs those other versions).

_resources/port1.0/compilers/gcc_compilers.tcl

@@ -8,9 +8,10 @@ if {${os.major} >= 10 || [option os.platform] ne "darwin"} {
     lappend compilers macports-gcc-14 macports-gcc-13 macports-gcc-12 macports-gcc-11 macports-gcc-10
 }
 
-# GCC 9 and older only on OSX10.10 and older
+# GCC 14, GCC 9 and older only on OSX10.10 and older
 # https://trac.macports.org/ticket/65472
 if {${os.major} < 15} {
+    lappend compilers macports-gcc-14
     if {${os.major} >= 10} {
         lappend compilers macports-gcc-9 macports-gcc-8
     }

_resources/port1.0/compilers/gcc_dependencies.tcl

@@ -2,11 +2,7 @@
 
 # GCC version providing the primary runtime
 # Note settings here *must* match those in the lang/libgcc port and compilers PG
-if {[option os.platform] eq "darwin" && [option os.major] < 10} {
-    set gcc_main_version 7
-} else {
-    set gcc_main_version 14
-}
+set gcc_main_version 14
 
 # compiler links against libraries in libgcc\d* and/or libgcc-devel
 if {[vercmp ${gcc_version} 4.6] < 0} {

_resources/port1.0/group/compilers-1.0.tcl

@@ -81,12 +81,7 @@ options compilers.add_gcc_rpath_support
 default compilers.add_gcc_rpath_support yes
 
 # Set a default gcc version
-if {${os.major} < 10 && ${os.platform} eq "darwin" } {
-    # see https://trac.macports.org/ticket/57135
-    set compilers.gcc_default gcc7
-} else {
-    set compilers.gcc_default gcc14
-}
+set compilers.gcc_default gcc14
 
 set compilers.list {cc cxx cpp objc fc f77 f90}
 
@@ -107,16 +102,14 @@ if { ${os.arch} eq "arm" || ${os.platform} ne "darwin" } {
         if { [vercmp ${xcodeversion} < 16.0] && [vercmp ${xcodecltversion} < 16.0] } {
             lappend gcc_versions 10 11 12 13
         }
-        lappend gcc_versions 14 devel
     }
+    lappend gcc_versions 14 devel
 }
+
 # GCC version providing the primary runtime
 # Note settings here *must* match those in the lang/libgcc port.
-if { ${os.major} < 10 && ${os.platform} eq "darwin" } {
-    set gcc_main_version 7
-} else {
-    set gcc_main_version 14
-}
+set gcc_main_version 14
+
 ui_debug "GCC versions for Darwin ${os.major} ${os.arch} - ${gcc_versions}"
 foreach ver ${gcc_versions} {
     # Remove dot from version if present

lang/gcc14/Portfile

@@ -12,7 +12,6 @@ name                gcc${gcc_major_v}
 
 homepage            https://gcc.gnu.org/
 
-platforms           {darwin >= 10}
 categories          lang
 maintainers         nomaintainer
 # an exception in the license allows dependents to not be GPL
@@ -69,6 +68,17 @@ depends_lib-append  port:cctools \
 depends_run-append  port:gcc_select \
                     path:share/doc/libgcc/README:libgcc
 
+platform darwin {
+    if {(${configure.build_arch} in [list ppc ppc64]) || ${os.major} < 10} {
+        configure.compiler.add_deps \
+                        no
+        depends_build-append \
+                        port:gcc10-bootstrap
+        configure.cc    ${prefix}/libexec/gcc10-bootstrap/bin/gcc
+        configure.cxx   ${prefix}/libexec/gcc10-bootstrap/bin/g++
+    }
+}
+
 depends_skip_archcheck-append gcc_select ld64 cctools
 license_noconflict  gmp mpfr ppl libmpc zlib
 

lang/gcc7/Portfile

@@ -40,7 +40,10 @@ checksums           rmd160  91d46ec088badec75f41a2ad2a0ba228a6715107 \
 # If it is, libgcc7 installs a full runtime, otherwise it only installs
 # what is missing from newer libgccX builds.
 # NOTE : The logic here must match that in the libgcc port.
-set isLastSupported [ expr ${os.major} < 10 ]
+# set isLastSupported [ expr ${os.major} < 10 ]
+
+# libgcc7 is currently not the last supported libgcc for any system
+set isLastSupported false
 
 if { ${configure.build_arch} eq "i386" && ${os.major} >= 10 } {
 

lang/libgcc/Portfile

@@ -5,7 +5,7 @@ PortGroup select    1.0
 
 epoch               3
 name                libgcc
-version             8.0
+version             9.0
 revision            0
 
 conflicts           libgcc-devel
@@ -31,11 +31,8 @@ variant universal   { }
 # Pick the gcc version that provides the primary runtime.
 # NOTE : The logic here must match that in the gccX ports *and*
 # that in _resources/port1.0/group/compilers-1.0.tcl
-if { ${os.major} < 10 } {
-    set gcc_version 7
-} else {
-    set gcc_version 14
-}
+set gcc_version 14
+
 depends_lib port:libgcc${gcc_version}
 
 build { }