I don't really know what the patch to NumberUtils.h in opencolorio is
about. I also don't really know why it works with -current and not with
libc++19 (there's some locale-related weirdness in that update).

This fixes the build, and likely only the last hunk is needed. This
also builds with -current. Leaving that here so that someone with more
interest in this port can pick it up, think about it and commit a
correct version of it.

In file included from /usr/obj/ports/opencolorio-2.4.2/OpenColorIO-2.4.2/src/OpenColorIO/fileformats/xmlutils/XMLReaderUtils.h:17:
/usr/obj/ports/opencolorio-2.4.2/OpenColorIO-2.4.2/src/utils/../utils/NumberUtils.h:237:17: error: no member named 'strtol_l' in the global namespace; did you mean 'strtoll_l'?
  237 |     tempval = ::strtol_l(first, &endptr, 0, loc.local);
      |               ~~^
/usr/include/c++/v1/__support/xlocale/__strtonum_fallback.h:37:40: note: 'strtoll_l' declared here
   37 | inline _LIBCPP_HIDE_FROM_ABI long long strtoll_l(const char* __nptr, char** __endptr, int __base, locale_t) {
      |                                        ^
1 error generated.

Index: patches/patch-src_utils_NumberUtils_h
===================================================================
RCS file: /cvs/ports/graphics/opencolorio/patches/patch-src_utils_NumberUtils_h,v
diff -u -p -r1.9 patch-src_utils_NumberUtils_h
--- patches/patch-src_utils_NumberUtils_h	29 May 2025 23:46:23 -0000	1.9
+++ patches/patch-src_utils_NumberUtils_h	3 Jul 2025 08:33:22 -0000
@@ -6,7 +6,7 @@ Index: src/utils/NumberUtils.h
  #ifdef _WIN32
      tempval = _strtod_l(first, &endptr, loc.local);
 -#else
-+#elif defined(__GLIBC__) || defined(_LIBCPP_VERSION)
++#elif defined(__GLIBC__)
      tempval = ::strtod_l(first, &endptr, loc.local);
 +#else
 +    tempval = ::strtod(first, &endptr);
@@ -18,7 +18,7 @@ Index: src/utils/NumberUtils.h
      // On OSX, strtod_l is for some reason drastically faster than strtof_l.
      tempval = static_cast<float>(::strtod_l(first, &endptr, loc.local));
 -#else
-+#elif defined(__GLIBC__) || defined(_LIBCPP_VERSION)
++#elif defined(__GLIBC__)
      tempval = ::strtof_l(first, &endptr, loc.local);
 +#else
 +    tempval = ::strtof(first, &endptr);
@@ -30,7 +30,7 @@ Index: src/utils/NumberUtils.h
  #ifdef _WIN32
      tempval = _strtol_l(first, &endptr, 0, loc.local);
 -#elif defined(__GLIBC__)
-+#elif defined(__GLIBC__) || defined(_LIBCPP_VERSION)
++#elif defined(__GLIBC__)
      tempval = ::strtol_l(first, &endptr, 0, loc.local);
  #else
      tempval = ::strtol(first, &endptr, 0);