totem-pl-parser: fix build on older systems

gnome/totem-pl-parser/Portfile

@@ -15,7 +15,6 @@ long_description    totem-pl-parser is a simple GObject-based library to parse \
                     a host of playlist formats, as well as save those
 
 homepage            https://gitlab.gnome.org/GNOME/${name}
-platforms           darwin
 master_sites        gnome:sources/${name}/${branch}/
 
 use_xz              yes
@@ -41,6 +40,16 @@ configure.args      -Denable-libarchive=yes \
                     -Denable-uchardet=yes \
                     -Denable-gtk-doc=true
 
+# /usr/include/unistd.h: error: redundant redeclaration of ‘_Exit’ etc.
+compiler.blacklist-append \
+                    *gcc-4.0 *gcc-4.2
+
+# error: 'ret' may be used uninitialized [-Werror=maybe-uninitialized]
+if {[string match *gcc* ${configure.compiler}]} {
+    patchfiles-append \
+                    patch-fix-gcc-build.diff
+}
+
 # uses g-ir-scanner, which uses $CC from env
 if {${universal_possible} && [variant_isset universal]} {
     foreach arch ${configure.universal_archs} {

gnome/totem-pl-parser/files/patch-fix-gcc-build.diff

@@ -0,0 +1,10 @@
+--- meson.build	2021-06-25 20:17:41.000000000 +0800
++++ meson.build	2024-05-12 13:11:07.000000000 +0800
+@@ -123,7 +123,6 @@
+     '-Werror=pointer-to-int-cast',
+     '-Werror=empty-body',
+     '-Werror=write-strings',
+-    '-Werror=maybe-uninitialized',
+   ]
+ else
+   test_cflags = []