#599: improve reliability of LLVM build instructions
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Reporter: jordan.breed...@… | Owner: lsansone...@…
Type: defect | Status: new
Priority: blocker | Milestone:
Component: MacRuby | Keywords:
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Since MacRuby currently depends on specific LLVM revisions it is a good
idea to make sure the build instructions work in as many conditions as
possible.
Prior to Jan 27th when Xcode 3.2.2 got put into beta this was fairly easy.
You could just trim things like /usr/local and /Developer/usr/bin from
your path long enough to build LLVM with these instructions:
{{{
./configure --enable-bindings=none
UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" ENABLE_OPTIMIZED=1 make
sudo env UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" ENABLE_OPTIMIZED=1 make
install
}}}
As of Xcode 3.2.2 it looks like the Xcode team is fixing up some things,
rather than some compilers only being in /Developer (or /Developer-BETA,
etc.) and gcc being in /usr/bin, all of them are put into /usr/bin.
{{{
-rwxrwxr-x 1 root admin 819K Jan 9 23:04 /usr/bin/clang*
lrwxr-xr-x 1 root wheel 7B Jan 27 19:46 /usr/bin/g++@ -> g++-4.2
-rwxr-xr-x 1 root wheel 95K Nov 25 06:47 /usr/bin/g++-4.0*
-rwxr-xr-x 1 root wheel 162K Dec 22 22:12 /usr/bin/g++-4.2*
lrwxr-xr-x 1 root wheel 7B Jan 27 19:46 /usr/bin/gcc@ -> gcc-4.2
-rwxr-xr-x 1 root wheel 95K Nov 25 06:47 /usr/bin/gcc-4.0*
-rwxr-xr-x 1 root wheel 162K Dec 22 22:12 /usr/bin/gcc-4.2*
lrwxr-xr-x 1 root admin 32B Jan 27 19:46 /usr/bin/llvm-g++@ ->
../llvm-gcc-4.2/bin/llvm-g++-4.2
lrwxr-xr-x 1 root admin 32B Jan 27 19:46 /usr/bin/llvm-g++-4.2@ ->
../llvm-gcc-4.2/bin/llvm-g++-4.2
lrwxr-xr-x 1 root admin 32B Jan 27 19:46 /usr/bin/llvm-gcc@ ->
../llvm-gcc-4.2/bin/llvm-gcc-4.2
lrwxr-xr-x 1 root admin 32B Jan 27 19:46 /usr/bin/llvm-gcc-4.2@ ->
../llvm-gcc-4.2/bin/llvm-gcc-4.2
}}}
So, LLVM is now much more likely to fail to build with UNIVERSAL enabled
because it is almost guaranteed to find llvm-gcc and llvm-g++ since it
finds them by search PATH, and /usr/bin needs to be in PATH.
This does work though (setting the compiler specifically as well as
telling it to look in a place where llvm-gcc and llvm-g++ are unlikely to
exist):
{{{
env UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" CC=/usr/bin/gcc
CXX=/usr/bin/g++ ./configure --enable-bindings=none --enable-optimzed
--with-llvmgccdir=/tmp
env UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" CC=/usr/bin/gcc
CXX=/usr/bin/g++ make -j2
sudo env UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" CC=/usr/bin/gcc
CXX=/usr/bin/g++ make install
}}}
--
Ticket URL: <http://www.macruby.org/trac/ticket/599>
MacRuby <http://macruby.org/>
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