I'm a software engineer at Apple where I have worked on various technologies over my career in CoreOS, iOS, and Development Technologies. I am the principal developer responsible for ​XQuartz. I've extended this role to MacPorts where I maintain a large number of our X11 ports in addition to llvm, clang, and some random other ports.

Related Wikis

• Leopard SDK Fixes
• libc++ On Older Systems

Tickets for base, guide, website, …

Reported Tickets

#30040

Allow case-sensitive build roots

#52810

Enhance buildbot email to include links to failing builds instead of just all builds

Assigned Tickets

#61649

installer postflight incorrectly sets DISPLAY variable on Big Sur

On CC

#16373

base should maintain a persistent working copy for all supported VCS fetches

#48345

Building for 10.4u SDK on 10.6 uses gcc-4.0 even though building directly on 10.4 uses the newer apple-gcc-4.2

Tickets for ports

Reported Tickets

#22961

winetricks should mkdir ~/.wine/drive_c/windows/Fonts

#23040

ocamlmklib doesn't understand -arch

#37783

graphviz +universal +ruby fails if ruby19 is -universal

#40194

muniversal: pre-merge hook for each destroot

#40478

gcc-4.8 (and likely earlier) build incorrectly +universal

#42702

libtool drops dylibs at link time

#44624

vim+universal+ruby18 fails to build because of missing rb_num2uint symbol in i386 slice of libruby.dylib

#46432

scons messes up the environment and removes ${prefix}/bin from $PATH

#50854

scons incorrectly builds projects, serf1 unexpectedly changed dylib versions with just a revbump for OpenSSL

#51039

vte fails to build if an older version is active (builds against installed content instead of local content)

#52248

inkscape, inkscape-devel +strict fails to build due to glibmm / glib2 deprecation misconfiguration

#52398

Remove webkit-gtk and webkit-gtk-2.0

#52408

Update claws-mail to use webkit2-gtk

#52411

Update bibledit to use webkit2-gtk

#53152

scons does not honor $PATH

Assigned Tickets

#22724

mplayer-devel and binary codec package

#39307

mplayer no subtitles, no fonts

#42071

mesa: add modern python variants

#44780

MPlayer @1.1_8 +osd does not produce osd

#46681

crash in glx_display_free when closing application connected to remote XOrg.org server

#46856

add xvfb support to xorg-server package for proposed xvfb-run package to use

#47157

ld64 @2_0 +ld64_127 Linked huge PowerPC dynamic library causes crashes

#47776

ld64 @2 Add wrapper script to select compatible linker

#48823

MPlayer falling back to pbuffer on OS X 10.11

#50565

MPlayer 1.2_1 dvd support missing

#50784

MPlayer @1.2_1 and @1.2_2 patch to use new coreaudio API calls

#51287

Inkscape crashes on startup if enchant is installed with +applespell

#52398

Remove webkit-gtk and webkit-gtk-2.0

#52411

Update bibledit to use webkit2-gtk

#53553

font-misc-ethiopic needs runtime dependency on mkfontscale and mkfontdir

#53759

mplayer binary seems broken on macbook 5,1 running Sierra

#53862

xorg-libXt @1.1.5: autom4te: need GNU m4 1.4 or later: /usr/bin/m4

#54131

llvm-3.7 @3.7.1_4: Faulty LLVMConfig.cmake

#54289

libcxx{,-abi} : upgrade + "runtime" variant

#54654

cdda_interface.h breaks C++ builds

#54744

coexistence of libressl, libressl-devel, openssl, boringssl, etc.

#55371

mplayer-devel @37869_2: Opportunistic linking to various packages

#55442

libunwind @3.9.1: UNREACHABLE executed!

#55443

libcxx, libcxxabi @3.9.1: All compilers are either blacklisted or unavailable

#55723

mplayer +nodvd fails

#56015

llvm-gcc42: Don't build with -Werror

#56983

xorg-server-devel : upgrade and +dri variants

#57292

xhyve @20180530: Undefined symbols _deflate _crc32 _deflateEnd _deflateInit_

#57498

lldb-7.0: error: use of undeclared identifier 'vm_kernel_page_size'

#57755

libmacho @921 does not build on PPC Mac OS X 10.4.11, Tiger, because execvp is missing

#57911

libcxx @5.0.1_4: does not install without following the LibcxxOnOlderSystems instructions on 10.5 Leopard Intel

#58227

libunwind fails to build on 10.14 due to default +universal

#58325

X11 is misbehaving: time lag in "command display"

#58540

xorg-libxcb @1.13.1 does not build on High Sierra (macOS 10.13.6) because building documentation never finds an end

#58601

xorg-server fails with xcode 11 undefined identifier _appFlags._active = YES;

#58749

cctools: Update to Xcode 11-compatible version

#58917

llvm-8.0 fails to build on older sytems (darwin 13 and less) when go is installed, as it tries to build the go bindings but go needs special attention to work on these systems

#58922

xorg-server @1.20.5: screen capture of java programs from ubuntu server are missing visual components

#59003

Xwindow server doesn't launch

#59377

xorg-xorgproto @2019.2: Failed to configure on macOS 10.15

#59452

[xorg-xtrans] : includes an inexistant header

#59773

xorg-server @1.20.5: x11perf fails with BadMatch / X_GetImage

#59785

llvm ports opportunistically build ocaml binding even when +ocaml variant is not selected; leads to conflicts between them

#60038

xorg-libXext configure failture

#60063

xdm @1.1.12 fails to build on <= 10.8

#60874

MPlayer: Update to 1.4

#60884

Missing configure-implicit.patch for libunistring

#61133

cctools: reinplace didn't change anything

#61194

xterm @359_0 fails to build on macOS 10.15.6 / Xcode 12.0: undefined symbol "_tgetent" in resize.o

#61612

xorg-libx11 @1.7.0 variant +docs does not build on El Capitan, OK on Big Sur (Java problem?)

#61682

error: implicit declaration of function 'fft_forward' is invalid in C99

#61685

font-bh-lucidatypewriter-100dpi @1.0.3: extract failure: sandbox-exec: line 1: Error reading string

#61815

mesa @17.1.6_2 cannot 'make check' on macOS High Sierra, Version 10.13.6, because X11/Xproto.h cannot be found

#61864

ld64: add llvm10 and llvm11 variants

#61959

Issue with XQuartz & legacy X forwarding

#61972

clang-8.0:build fails on BigSur: error: invalid application of 'sizeof' to an incomplete type 'struct stat64'

#61979

xorg-server @1.20.10 will not start unless openssl is also installed

#62061

mesa @19.0.8 build failure on 10.11: clock_gettime unavailable

#62063

mesa @19.0.8_0+osmesa+python27 patch failure on 10.6

On CC

#11784

RFE: make R universal

#29763

*_select framework does not apply to Perl: fix provided

#31300

mercury @11.0 +universal mmc fails with inappropriate paths

#31580

MacPorts xfd renders fonts differently (and worse) from OSX xfd

#32130

ffmpeg-devel: fatal error: when writing output to : Broken pipe

#32799

request for ffmbc port

#34094

ffmpeg: patch required to solve undefined type/function when using C++

#34289

ffmpeg-devel: add qt-faststart

#36092

PDFTK broken after GCC47 upgrade

#36850

ffmpeg: fix universal build when architectures can't be run

#36981

gcc ports may not be UsingTheRightCompiler

#37020

ffmpeg, ffmpeg-devel: Add libass (subtitle burning)

#37604

doxygen and xorg-libxcb circular dependency

#38551

gcc48: "ar" does not work (complains about missing 'liblto_plugin.so')

#40464

libquicktime @1.2.4: error: use of undeclared identifier 'AVCODEC_MAX_AUDIO_FRAME_SIZE'

#41256

cmake portgroup's debug variant sets release optflags

#41529

Error: org.macports.build for port BGHUDAppKit returned: command execution failed

#42014

gjs @1.38.1: dyld: Library not loaded: ../../../../../../../../../lib/libmozjs-17.0.dylib

#42777

gcc47/gcc48 - problem with linking some C++ python extensions (std::ostringstream)

#43869

libgcc @4.8.2_1: error: '_Unwind_Ptr' does not name a type

#44064

root6: try to decouple the compiler that root was built with and compiler that root uses

#45678

libquicktime @1.2.4: error: no member named 'luma_elim_threshold' in 'struct AVCodecContext'

#46431

llvm does not have manpage

#46700

ffmpeg: add openssl variant

#46857

update rNMR to 1.1.8 using new xvfb-run port and xvfb subport as well as return to ${prefix}/lib/R/library

#47532

imlib2 @ 1.4.6: introduce x11 variant

#47929

llvm-gcc42 @2336.11_2 fails building on 10.6.8

#48471

FSF gcc48 fails to compile projects on El Capitan due to OS X SDK bug in Availability.h

#48767

guile: re-enable universal variant

#50547

port suggestion : clazy

#51123

request: port:libclang-XY

#51133

Xcode 7.3 bug: __DATA/__thread_bss extends beyond end of file

#51488

gstreamer1-gst-plugins-bad Will Not Update

#51815

librsvg @2.40.16 does not build on PPC Mac OS X 10.5.8, Leopard, because of "./libtool: eval: line 1085: syntax error near unexpected token `|' "

#52210

libsdl2: make it build on 10.6 (against 10.6 SDK)

#52424

Ports that depend on old llvm versions should be updated

#53201

cmake: doesn't recognize macports-clang (No known features for CXX compiler)

#53343

wine and wine-devel: smooth fonts?

#53449

cctools 895 breaks port:audacity build

#54072

ffmpeg: a variant to compile ffmpeg with support for nvenc?

#54091

submission: QMPlay2, yet another multimedia player

#54116

ffmpeg loudnorm filter

#54157

ncurses +universal: fails to build when using `-t`

#54166

[submission] gccas

#54236

port:mesa & port:libepoxy : provide and support EGL

#54632

ffmpeg, ffmpeg-devel: remove ASCII art from notes

#54633

ffmpeg, ffmpeg-devel: not distributable on Snow Leopard or Lion

#54661

Blu-Ray playback

#54773

port:libgcc/port:gcc7: proposed modifications, efficiency + libc++ support

#55168

ffmpeg 3.4 VDA (VideoDecodeAcceleration) fix

#55198

ffmpeg @3.4: ld: cannot link directly with /System/Library/Frameworks//CoreImage.framework/CoreImage

#56223

clang-6.0 unused regex?

#56739

gildas fails to install due to unexpected token

#56991

wine cannot be built against the 10.14 SDK

#57137

xcode portgroup should set -derivedDataPath on Xcode versions that need it

#57234

Some ports are failing to build due to new build system in Xcode 10

#57576

libcxx 8+ usability

#58042

port request: lld

#58109

MPlayer: error: invalid output constraint '=o' in asm

#58617

ffmpeg @4.1.3: opportunistic linking to /opt/local/lib/libXv.1.dylib

#58678

xorg-server @1.20.5_0: upgrade fails with "mkfontdir not registered as installed & active"

#58712

macports-clangs > 6.0 are missing atomic builtins on i386

#59027

libunwind(-headers) @5.0.1: update to 8.0.1

#59100

ffmpeg @4.2.1+gpl2: error: unknown type name 'OPJ_SIZE_T'

#59561

ffmpeg --enable-libvidstab

#59750

ffmpeg and ffmpeg-devel immediately crash with segfault 11 when input is mp4

#59860

x265 v3.2.1 does not build 10-bit (yuv420p10le, yuv422p10le or yuv444p10le)

#59941

fmpeg @4.2.2: error: unknown type name 'u_long'; did you mean 'long'?

#60173

clang-9.0@9.0.1 +debug Failed to destroot clang-9.0: reinplace sed(1) failed

#60533

ffmpeg patch to fix including opengl

#60781

llvm-3.4: SyntaxError: invalid syntax

#60928

admin user (and ditto group member) no longer has the corresponding permissions?!

#60933

request: libaom-av1

#61070

libtapi update to 1100.0.11

#61158

xorg-libxcb : destroot weirdness

#61172

llvm-3.3: needs a newer python to build on older systems

#61280

clang-3.4: error: invalid version number in '-mlinker-version=6.'

#61336

llvm-3.4 @3.4.2_13 does not build +universal: because dep libffi not installed +universal

#61346

ffmpeg-devel @4.3.git-20200806 +jack Need to specifically enable JACK now

#61449

ffmpeg and libx264

#61488

multiple ports: review macOS version checking

#61589

clang-devel @20201115: build fails on 10.9 with CMake Error: sdk_has_arch_support Function invoked with incorrect arguments for function

#61668

ffmpeg 4.3.1: fails to install on Apple Silicon

#62082

Error: ld64: Variant ld64_274 conflicts with ld64_xcode