Tools/Scripts/configure-llvm - WebKit - Git at Google

 #!/bin/sh

 # Copyright (C) 2013 Apple Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 #
 # 1.  Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 # 2.  Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
 #     documentation and/or other materials provided with the distribution.
 #
 # THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 # DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 set -e
 set -x

 if test "x$1" != "x"
 then
     cd $1
 fi

 # Configure LLVM for a Release+Asserts build that only includes the x86_64 backend, uses
 # libcpp (because that's what WebKit uses), and doesn't depend on either zlib or curses.
 # In the future it will be appropriate to parameterize what backends should be built (we
 # only want to build a backend for our current target) and to add more flags to remove
 # dependencies and features.

 # FIXME: We need LLVM to have its own sensible story for hiding symbols. But while we
 # don't have a sensible story, we use a hilarious one: CPPFLAGS=-fvisibility=hidden

 ./configure --enable-optimized=yes --enable-backtraces=no --enable-targets=x86_64 --enable-libcpp=yes --enable-zlib=no --enable-terminfo=no CPPFLAGS=-fvisibility=hidden
	#!/bin/sh

	# Copyright (C) 2013 Apple Inc. All rights reserved.
	#
	# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions
	# are met:
	#
	# 1. Redistributions of source code must retain the above copyright
	# notice, this list of conditions and the following disclaimer.
	# 2. Redistributions in binary form must reproduce the above copyright
	# notice, this list of conditions and the following disclaimer in the
	# documentation and/or other materials provided with the distribution.
	#
	# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
	# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	# DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
	# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	set -e
	set -x

	if test "x$1" != "x"
	then
	cd $1
	fi

	# Configure LLVM for a Release+Asserts build that only includes the x86_64 backend, uses
	# libcpp (because that's what WebKit uses), and doesn't depend on either zlib or curses.
	# In the future it will be appropriate to parameterize what backends should be built (we
	# only want to build a backend for our current target) and to add more flags to remove
	# dependencies and features.

	# FIXME: We need LLVM to have its own sensible story for hiding symbols. But while we
	# don't have a sensible story, we use a hilarious one: CPPFLAGS=-fvisibility=hidden

	./configure --enable-optimized=yes --enable-backtraces=no --enable-targets=x86_64 --enable-libcpp=yes --enable-zlib=no --enable-terminfo=no CPPFLAGS=-fvisibility=hidden