# Build Configuration

Please be aware that this page doesn't reflect all the options used to build Tor Browser Nightly.

## Source

Built from https://gitlab.torproject.org/tpo/applications/tor-browser/-/commit/eff748cdcedb3112c2a13489fa982b303dec18b0

## Build platform

target
aarch64-apple-darwin

## Build tools

Compiler | Version | Compiler flags
--- | --- | ---
/var/tmp/dist/macosx-toolchain/clang/bin/clang -isysroot /var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk -target aarch64-apple-darwin -B /var/tmp/dist/macosx-toolchain/cctools/bin -isysroot /var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk -Werror=format -Werror=format-security -fstack-protector-strong -D_FORTIFY_SOURCE=2 -mmacosx-version-min=11.0 | 21.1.8 | -pthread -ffunction-sections -fdata-sections -fno-math-errno -fdiagnostics-absolute-paths -fPIC -mcpu=apple-m1
/var/tmp/dist/macosx-toolchain/clang/bin/clang++ -isysroot /var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk -target aarch64-apple-darwin -B /var/tmp/dist/macosx-toolchain/cctools/bin -isysroot /var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk -Werror=format -Werror=format-security -fstack-protector-strong -D_FORTIFY_SOURCE=2 -mmacosx-version-min=11.0 -stdlib=libc++ -std=gnu++20 | 21.1.8 | -fno-rtti -pthread -fno-sized-deallocation -fno-aligned-new -ffunction-sections -fdata-sections -fno-math-errno -fno-exceptions -fdiagnostics-absolute-paths -fPIC -mcpu=apple-m1 -gdwarf-4 -gsimple-template-names --start-no-unused-arguments -mllvm=-dwarf-linkage-names=Abstract --end-no-unused-arguments -O3 -fno-omit-frame-pointer -funwind-tables
/var/tmp/dist/rust/bin/rustc | 1.94.1 |

## Configure options

--target=aarch64-apple-darwin MOZILLA_OFFICIAL=1 --enable-update-channel=nightly HOST_CFLAGS=-g HOST_CXXFLAGS=-g HOST_LDFLAGS=-g 'CFLAGS= -mcpu=apple-m1' 'CXXFLAGS= -mcpu=apple-m1' 'LDFLAGS=-Wl,-syslibroot,/var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk -Wl,-pie' MACOS_SDK_DIR=/var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk TOOLCHAIN_PREFIX=/var/tmp/dist/macosx-toolchain/cctools/bin/aarch64-apple-darwin- 'CC=/var/tmp/dist/macosx-toolchain/clang/bin/clang -target aarch64-apple-darwin -B /var/tmp/dist/macosx-toolchain/cctools/bin -isysroot /var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk -Werror=format -Werror=format-security -fstack-protector-strong -D_FORTIFY_SOURCE=2' 'CXX=/var/tmp/dist/macosx-toolchain/clang/bin/clang++ -target aarch64-apple-darwin -B /var/tmp/dist/macosx-toolchain/cctools/bin -isysroot /var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk -Werror=format -Werror=format-security -fstack-protector-strong -D_FORTIFY_SOURCE=2' --enable-lto=cross MOZ_SOURCE_REPO=https://gitlab.torproject.org/tpo/applications/tor-browser MOZ_SOURCE_CHANGESET=eff748cdcedb3112c2a13489fa982b303dec18b0 --with-distribution-id=org.torproject 'BINDGEN_CFLAGS=-target aarch64-apple-darwin -B /var/tmp/dist/macosx-toolchain/cctools/bin -isysroot /var/tmp/dist/macosx-toolchain/MacOSX26.5.sdk -Werror=format -Werror=format-security -fstack-protector-strong -D_FORTIFY_SOURCE=2' --enable-js-shell --enable-rust-simd --disable-eme MOZ_TELEMETRY_REPORTING= --disable-webrtc --enable-proxy-bypass-protection --enable-bundled-fonts WASI_SYSROOT=/var/tmp/dist/wasi-sysroot --disable-backgroundtasks --with-branding=browser/branding/tb-nightly 'MOZ_APP_REMOTINGNAME=Tor Browser Nightly' --disable-crashreporter --disable-parental-controls DMG_TOOL=/var/tmp/dist/libdmg-hfsplus/dmg MAR_CHANNEL_ID=torbrowser-torproject-nightly ACCEPTED_MAR_CHANNEL_IDS=torbrowser-torproject-nightly --enable-nss-mar --enable-base-browser-update --with-updater-url=https://nightlies.tbb.torproject.org/nightly-updates/updates/nightly-macos MOZ_PKG_MAC_DSSTORE=/var/tmp/tmp.PktdR6g5K6/dmg-root/TorBrowser.dmg/nightly.DS_Store MOZ_PKG_MAC_BACKGROUND=/var/tmp/tmp.PktdR6g5K6/dmg-root/TorBrowser.dmg/.background/dmg-window_2x.png MOZ_PKG_MAC_ICON=/var/tmp/tmp.PktdR6g5K6/dmg-root/TorBrowser.dmg/.VolumeIcon.icns --disable-system-policies --disable-system-preferences --disable-legacy-profile-creation MKFSHFS=/var/tmp/dist/hfsplus-tools/newfs_hfs HFS_TOOL=/var/tmp/dist/libdmg-hfsplus/hfsplus DSYMUTIL=/var/tmp/dist/macosx-toolchain/clang/bin/dsymutil --enable-strip --with-relative-data-dir=../TorBrowser-Data/Browser --with-base-browser-version=tbb-nightly.2026.07.30