= Xcode Version Information =
This is a place to record various bits of information pertaining to a release of Xcode, including the build number and versions of llvm-gcc and clang.

[[PageOutline(2, Contents , inline)]]

=== Adding new entries ===

First make sure the versions of your installed Xcode and Command Line Tools match each other! You can upgrade the Command Line Tools from the tab "Downloads" in the preferences window of Xcode.app.

Then run the following command to generate a new entry and copy it directly to your clipboard for pasting it into this wiki page:

{{{
#!sh
echo -en "=== $(/usr/bin/xcodebuild -version |head -n1) ===\n * '''Xcode''': $(/usr/bin/xcodebuild -version |tail -1)\n$(test -x /usr/bin/gcc-3.3 && echo " * '''gcc-3.3''': $(/usr/bin/gcc-3.3 --version 2>/dev/null |head -1)\n")$(test -x /usr/bin/gcc-4.0 && echo " * '''gcc-4.0''': $(/usr/bin/gcc-4.0 --version 2>/dev/null |head -1)\n")$(test -x /usr/bin/gcc-4.2 && echo " * '''gcc-4.2''': $(/usr/bin/gcc-4.2 --version 2>/dev/null |head -1)\n")$((test -x /usr/bin/llvm-gcc-4.2 || test -x /Developer/usr/bin/llvm-gcc-4.2) && echo " * '''llvm-gcc''': $((/usr/bin/llvm-gcc --version 2>/dev/null || /Developer/usr/bin/llvm-gcc --version 2>/dev/null) |head -1)\n")$((test -x /usr/bin/clang || test -x /Developer/usr/bin/clang) && echo " * '''clang''': $((test -x /usr/bin/clang && /usr/bin/clang --version 2>&1 || /Developer/usr/bin/clang --version 2>&1) |head -1)\n")" |tee /dev/tty |pbcopy
}}}

The toolchain version of the Xcode releases are also [https://en.wikipedia.org/wiki/Xcode#Toolchain_Versions documented on Wikipedia].

=== macOS Version Map ===

||=Name    =||=Version  =||=Codename     =||=Darwin  =||
|| macOS    ||      10.13|| High Sierra   || darwin 17||
|| macOS    ||      10.12|| Sierra        || darwin 16||
|| OS X     ||      10.11|| El Capitan    || darwin 15||
|| OS X     ||      10.10|| Yosemite      || darwin 14||
|| OS X     ||       10.9|| Mavericks     || darwin 13||
|| OS X     ||       10.8|| Mountain Lion || darwin 12||
|| Mac OS X ||       10.7|| Lion          || darwin 11||
|| Mac OS X ||       10.6|| Snow Leopard  || darwin 10||
|| Mac OS X ||       10.5|| Leopard       ||  darwin 9||
|| Mac OS X ||       10.4|| Tiger         ||  darwin 8||

== macOS 10.13 ==

=== Xcode 9.3 ===
 * '''Xcode''': Build version 9E145
 * '''clang''': Apple LLVM version 9.1.0 (clang-902.0.39.1)

=== Xcode 9.2 ===
 * '''Xcode''': Build version 9C40b
 * '''clang''': Apple LLVM version 9.0.0 (clang-900.0.39.2)

=== Xcode 9.1 ===
 * '''Xcode''': Build version 9B55
 * '''clang''': Apple LLVM version 9.0.0 (clang-900.0.38)

=== Xcode 9.0.1 ===
 * '''Xcode''': Build version 9A1004
 * '''clang''': Apple LLVM version 9.0.0 (clang-900.0.38)

=== Xcode 9.0 ===
 * '''Xcode''': Build version 9A235
 * '''clang''': Apple LLVM version 9.0.0 (clang-900.0.37)

== macOS 10.12 ==

=== Xcode 9.2 ===
 * '''Xcode''': Build version 9C40b
 * '''clang''': Apple LLVM version 9.0.0 (clang-900.0.39.2)

=== Xcode 9.1 ===
 * '''Xcode''': Build version 9B55
 * '''clang''': Apple LLVM version 9.0.0 (clang-900.0.38)

=== Xcode 9.0.1 ===
 * '''Xcode''': Build version 9A1004
 * '''clang''': Apple LLVM version 9.0.0 (clang-900.0.38)

=== Xcode 9.0 ===
 * '''Xcode''': Build version 9A235
 * '''clang''': Apple LLVM version 9.0.0 (clang-900.0.37)

=== Xcode 8.3.3 ===
 * '''Xcode''': Build version 8E3004b
 * '''clang''': Apple LLVM version 8.1.0 (clang-802.0.42)

=== Xcode 8.3.2 ===
 * '''Xcode''': Build version 8E2002
 * '''clang''': Apple LLVM version 8.1.0 (clang-802.0.42)

=== Xcode 8.3.1 ===
 * '''Xcode''': Build version 8E1000a
 * '''clang''': Apple LLVM version 8.1.0 (clang-802.0.41)

=== Xcode 8.3 ===
 * '''Xcode''': Build version 8E162
 * '''clang''': Apple LLVM version 8.1.0 (clang-802.0.38)

=== Xcode 8.2.1 ===
 * '''Xcode''': Build version 8C1002
 * '''clang''': Apple LLVM version 8.0.0 (clang-800.0.42.1)

=== Xcode 8.2 ===
 * '''Xcode''': Build version 8C38
 * '''clang''': Apple LLVM version 8.0.0 (clang-800.0.42.1)

=== Xcode 8.1 ===
 * '''Xcode''': Build version 8B62
 * '''clang''': Apple LLVM version 8.0.0 (clang-800.0.42.1)

== OS X 10.11 ==

=== Xcode 8.2.1 ===
 * '''Xcode''': Build version 8C1002
 * '''clang''': Apple LLVM version 8.0.0 (clang-800.0.42.1)

=== Xcode 8.2 ===
 * '''Xcode''': Build version 8C38
 * '''clang''': Apple LLVM version 8.0.0 (clang-800.0.42.1)

=== Xcode 8.1 ===
 * '''Xcode''': Build version 8B62
 * '''clang''': Apple LLVM version 8.0.0 (clang-800.0.42.1)

=== Xcode 8.0 ===
 * '''Xcode''': Build version 8A218a
 * '''clang''': Apple LLVM version 8.0.0 (clang-800.0.38)

=== Xcode 7.3.1 ===
 * '''Xcode''': Build version 7D1014
 * '''clang''': Apple LLVM version 7.3.0 (clang-703.0.31)

=== Xcode 7.2.1 ===
 * '''Xcode''': Build version 7C1002
 * '''clang''': Apple LLVM version 7.0.2 (clang-700.1.81)

== OS X 10.10 ==

=== Xcode 7.2.1 ===
 * '''Xcode''': Build version 7C1002
 * '''clang''': Apple LLVM version 7.0.2 (clang-700.1.81)

=== Xcode 7.0 ===
 * '''Xcode''': Build version 7A220
 * '''clang''': Apple LLVM version 7.0.0 (clang-700.0.72)

=== Xcode 6.4 ===
 * '''Xcode''': Build version 6E35b
 * '''clang''': Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)

=== Xcode 6.3.1 ===
 * '''Xcode''': Build version 6D1002
 * '''clang''': Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)

=== Xcode 6.3 ===
* '''Xcode''': Build version 6D570
* '''clang''': Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)

=== Xcode 6.2 ===
 * '''Xcode''': Build version 6C131e
 * '''clang''': Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)

=== Xcode 6.1.1 ===
 * '''Xcode''': Build version 6A2008a
 * '''clang''': Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)

=== Xcode 6.1 ===
 * '''Xcode''': Build version 6A1052d
 * '''clang''': Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)

== OS X 10.9 ==

=== Xcode 6.2 ===
 * '''Xcode''': Build version 6C131e
 * '''clang''': Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)

=== Xcode 5.1.1 ===
 * '''Xcode''': Build version 5B1008
 * '''clang''': Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)

=== Xcode 5.1 ===
 * '''Xcode''': Build version 5B130a
 * '''clang''': Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)

=== Xcode 5.0.2 ===
 * '''Xcode''': Build version 5A3005
 * '''clang''': Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)

=== Xcode 5.0.1 ===
 * '''Xcode''': Build version 5A2053
 * '''clang''': Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)

== OS X 10.8 ==

=== Xcode 5.1.1 ===
 * '''Xcode''': Build version 5B1008
 * '''clang''': Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)

=== Xcode 5.1 ===
 * '''Xcode''': Build version 5B130a
 * '''clang''': Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)

=== Xcode 5.0.2 ===
 * '''Xcode''': Build version 5A3005
 * '''clang''': Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)

=== Xcode 5.0.1 ===
 * '''Xcode''': Build version 5A2053
 * '''clang''': Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)

=== Xcode 5.0 ===
 * '''Xcode''': Build version 5A1413
 * '''clang (Xcode.app)''': Apple LLVM version 5.0 (clang-500.2.76) (based on LLVM 3.3svn)
 * '''clang (CLT)''': Apple LLVM version 5.0 (clang-500.2.75) (based on LLVM 3.3svn)

=== Xcode 4.6.3 ===
 * '''Xcode''': Build version 4H1503
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)

=== Xcode 4.6.2 ===
 * '''Xcode''': Build version 4H1003
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)

=== Xcode 4.6.1 ===
 * '''Xcode''': Build version 4H512
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple LLVM version 4.2 (clang-425.0.27) (based on LLVM 3.2svn)

=== Xcode 4.6 ===
 * '''Xcode''': Build version 4H127
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)

=== Xcode 4.5.2 ===
 * '''Xcode''': Build version 4G2008a
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)

=== Xcode 4.5.1 ===
 * '''Xcode''': Build version 4G1004
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)

=== Xcode 4.5 ===
 * '''Xcode''': Build version 4G182
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple clang version 4.1 (tags/Apple/clang-421.11.65) (based on LLVM 3.1svn)

== OS X 10.7 ==

=== Xcode 4.6.3 ===
 * '''Xcode''': Build version 4H1503
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)

=== Xcode 4.6.2 ===
 * '''Xcode''': Build version 4H1003
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)

=== Xcode 4.6.1 ===
 * '''Xcode''': Build version 4H512
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple LLVM version 4.2 (clang-425.0.27) (based on LLVM 3.2svn)

=== Xcode 4.6 ===
 * '''Xcode''': Build version 4H127
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)

=== Xcode 4.5.2 ===
 * '''Xcode''': Build version 4G2008a
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)

=== Xcode 4.5.1 ===
 * '''Xcode''': Build version 4G1004
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)

=== Xcode 4.5 ===
 * '''Xcode''': Build version 4G182
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
 * '''clang''': Apple clang version 4.1 (tags/Apple/clang-421.11.65) (based on LLVM 3.1svn)

=== Xcode 4.3.3 ===
 * '''Xcode''': Build version 4E3002
 * '''llvm-gcc''': i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.9.00)
 * '''clang''': Apple clang version 3.1 (tags/Apple/clang-318.0.61) (based on LLVM 3.1svn)

== Mac OS X 10.6 ==
 
=== Xcode 4.2 ===
 * '''Xcode''': BuildVersion: 4C199
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00)
 * '''clang''': Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)

=== Xcode 4.1 ===
 * '''Xcode''': Build version 4B110f
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)
 * '''clang''': Apple clang version 2.1 (tags/Apple/clang-163.7.1) (based on LLVM 3.0svn)

=== Xcode 4.0.2 ===
 * '''Xcode''': Build version 4A2002a
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.9)
 * '''clang''': Apple clang version 2.0 (tags/Apple/clang-139) (based on LLVM 2.9svn)

=== Xcode 4.0.1 ===
 * '''Xcode''': Build version 4A1006
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.9)
 * '''clang''': Apple clang version 2.0 (tags/Apple/clang-138) (based on LLVM 2.9svn)

=== Xcode 3.2.6 ===
 * '''Xcode''': BuildVersion: 10M2518
 * '''gcc-4.0''': i686-apple-darwin10-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5494)
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.6)
 * '''clang''': Apple clang version 1.7 (tags/Apple/clang-77) (based on LLVM 2.9svn)

=== Xcode 3.2.5 ===
 * '''Xcode''': BuildVersion: 10M2423
 * '''gcc-4.0''': i686-apple-darwin10-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5494)
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5664)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2333.4)
 * '''clang''': Apple clang version 1.6 (tags/Apple/clang-70)

=== Xcode 3.2.4 ===
 * '''Xcode''': BuildVersion: 10M2309
 * '''gcc-4.0''': i686-apple-darwin10-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5494)
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5664)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2326.10)
 * '''clang''': Apple clang version 1.5 (tags/Apple/clang-60)

=== Xcode 3.2.3 ===
 * '''Xcode''': BuildVersion: 10M2262
 * '''gcc-4.0''': i686-apple-darwin10-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5494)
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5664)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2326.10)
 * '''clang''': Apple clang version 1.5 (tags/Apple/clang-60)

=== Xcode 3.2.2 ===
 * '''Xcode''': BuildVersion: 10M2148
 * '''gcc-4.0''': i686-apple-darwin10-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5493)
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5659)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5646) (LLVM build 2207.5)
 * '''clang''': clang version 1.0.2 (http://llvm.org/svn/llvm-project/cfe/tags/Apple/clang-32 exported)

=== Xcode 3.2.1 ===
 * '''Xcode''': BuildVersion: 10M2003
 * '''gcc-4.0''': i686-apple-darwin10-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5493)
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5646) (dot 1)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5646) (LLVM build 2206)
 * '''clang''': clang version 1.0.1 (http://llvm.org/svn/llvm-project/cfe/tags/Apple/clang-24 exported)

=== Xcode 3.2 ===
 * '''Xcode''': BuildVersion: 10A432
 * '''gcc-4.0''': i686-apple-darwin10-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5493)
 * '''gcc-4.2''': i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5646)
 * '''llvm-gcc''': i686-apple-darwin10-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5646) (LLVM build 2118)
 * '''clang''': clang version 1.0 (http://llvm.org/svn/llvm-project/cfe/tags/Apple/clang-23 exported)

== Mac OS X 10.5 ==
=== Xcode 3.1.4 ===
 * '''Xcode''': BuildVersion: 9M2809
 * '''gcc-4.0''': i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5493)
 * '''gcc-4.2''': i686-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5577)
 * '''llvm-gcc''': i686-apple-darwin9-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5555) (LLVM build 2064.3)

=== Xcode 3.1.3 ===
 * '''Xcode''': BuildVersion: 9M2736
 * '''gcc-4.0''': i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5493)
 * '''gcc-4.2''': i686-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5574)
 * '''llvm-gcc''': i686-apple-darwin9-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5555) (LLVM build 2064.3)

=== Xcode 3.1.2 ===
 * '''Xcode''': BuildVersion: 9M2621
 * '''gcc-4.0''': i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5490)
 * '''gcc-4.2''': i686-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5566)
 * '''llvm-gcc''': i686-apple-darwin9-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5555) (LLVM build 2056)

=== Xcode 3.1.1 ===
 * '''Xcode''': BuildVersion: 9M2517
 * '''gcc-4.0''': i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5488)
 * '''gcc-4.2''': i686-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5564)
 * '''llvm-gcc''': i686-apple-darwin9-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5555) (LLVM build 2056)

=== Xcode 3.1 ===
 * '''Xcode''': BuildVersion: 9M2199
 * '''gcc-4.0''': i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5484)
 * '''gcc-4.2''': i686-apple-darwin9-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5564)
 * '''llvm-gcc''': i686-apple-darwin9-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5555) (LLVM build 2039)

=== Xcode 3.0 ===
 * '''Xcode''': Component versions: DevToolsCore-921.0; DevToolsSupport-893.0
 * '''gcc-4.0''': i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5465)

== Mac OS X 10.4 ==

=== Xcode 2.5 ===
 * '''Xcode''': Component versions: DevToolsCore-798.0; DevToolsSupport-794.0
 * '''gcc-3.3''': gcc-3.3 (GCC) 3.3 20030304 (Apple Computer, Inc. build 1819)
 * '''gcc-4.0''': i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5370)

=== Xcode 2.4.1 ===
 * '''Xcode''': Component versions: DevToolsCore-762.0; DevToolsSupport-764.0
 * '''gcc-3.3''': gcc-3.3 (GCC) 3.3 20030304 (Apple Computer, Inc. build 1819)
 * '''gcc-4.0''': i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5367)

=== Xcode 2.4 ===
 * '''Xcode''': Component versions: DevToolsCore-757.0; DevToolsSupport-733.0
 * '''gcc-3.3''': gcc-3.3 (GCC) 3.3 20030304 (Apple Computer, Inc. build 1819)
 * '''gcc-4.0''': i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5363)

=== Xcode 2.3 ===
 * '''Xcode''': Component versions: DevToolsCore-747.0; DevToolsSupport-733.0
 * '''gcc-3.3''': gcc-3.3 (GCC) 3.3 20030304 (Apple Computer, Inc. build 1819)
 * '''gcc-4.0''': i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5341)

=== Xcode 2.2.1 ===
 * '''Xcode''': Component versions: DevToolsCore-660.0; DevToolsSupport-651.0
 * '''gcc-3.3''': gcc-3.3 (GCC) 3.3 20030304 (Apple Computer, Inc. build 1819)
 * '''gcc-4.0''': i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5250)

=== Xcode 2.2 ===
 * gcc4 is 4.0.1

=== Xcode 2.1 ===
 * gcc4 is 4.0.0

=== Xcode 2.0 ===
 * gcc4 is 4.0.0