From 225f50ea9626b9a2813820cf1e03bb82f337f959 Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Wed, 2 Nov 2011 14:07:32 -0700
Subject: [PATCH] Begin remove old LLVM configuration code

---
 configure | 150 +++++++++++++++++++-----------------------------------
 1 file changed, 53 insertions(+), 97 deletions(-)

diff --git a/configure b/configure
index 3a5017a59c7..ebdea8c89be 100755
--- a/configure
+++ b/configure
@@ -306,50 +306,20 @@ fi
 
 if [ ! -z "$CFG_LLVM_ROOT" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
 then
-    CFG_LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
-fi
+    step_msg "using custom LLVM"
 
-if [ ! -z "$CFG_LLVM_ROOT" -a -z "$CFG_LLVM_CONFIG" ]
-then
-    CFG_LLVM_INCDIR="$CFG_LLVM_ROOT/include"
-    CFG_LLVM_BINDIR="$CFG_LLVM_ROOT/bin"
-    CFG_LLVM_LIBDIR="$CFG_LLVM_ROOT/lib"
-    CFG_LLVM_CXXFLAGS="-I$CFG_LLVM_INCDIR"
-    CFG_LLVM_LDFLAGS=""
-    CFG_LLVM_LIBS=$(find "$CFG_LLVM_LIBDIR" \
-                    -name '*.lib' \
-                    -exec echo '\"{}\"' ';' \
-                    | xargs echo)
-    CFG_LLVM_VERSION=$("$CFG_LLVM_BINDIR/llc" \
-                       --version \
-                       | grep version \
-                       | cut -d ' ' -f 5-)
-    CFG_LLVM_TRIPLE=$("$CFG_LLVM_BINDIR/llc" \
-                      --version \
-                      | grep Host: \
-                      | cut -d ' ' -f 4-)
-elif [ ! -z "$CFG_LLVM_CONFIG" ]
-then
-    CFG_LLVM_VERSION=$($CFG_LLVM_CONFIG --version)
-    CFG_LLVM_INCDIR=$($CFG_LLVM_CONFIG --includedir)
-    CFG_LLVM_BINDIR=$($CFG_LLVM_CONFIG --bindir)
-    CFG_LLVM_LIBDIR=$($CFG_LLVM_CONFIG --libdir)
-    CFG_LLVM_CXXFLAGS=$($CFG_LLVM_CONFIG --cxxflags)
-    CFG_LLVM_LDFLAGS=$($CFG_LLVM_CONFIG --ldflags)
-    CFG_LLVM_LIBS=$($CFG_LLVM_CONFIG --libs)
-    CFG_LLVM_TRIPLE=$($CFG_LLVM_CONFIG --host-target)
-else
-    err "no llvm-config found and no --llvm-root specified"
-fi
+    LLVM_CONFIG="$CFG_LLVM_ROOT/bin/llvm-config"
+    LLVM_VERSION=$($CFG_LLVM_CONFIG --version)
 
-case $CFG_LLVM_VERSION in
-    (3.0svn | 3.0 | 3.1svn)
-    step_msg "found ok version of LLVM: $CFG_LLVM_VERSION"
-    ;;
-    (*)
-    err "bad LLVM version: $CFG_LLVM_VERSION, need >=3.0svn"
-    ;;
-esac
+    case $LLVM_VERSION in
+	(3.0svn | 3.0 | 3.1svn)
+	    step_msg "found ok version of LLVM: $CFG_LLVM_VERSION"
+	    ;;
+	(*)
+	    err "bad LLVM version: $CFG_LLVM_VERSION, need >=3.0svn"
+	    ;;
+    esac
+fi
 
 if [ ! -z "$CFG_ENABLE_CLANG" ]
 then
@@ -381,18 +351,6 @@ then
     CFG_PREFIX=/usr/local
 fi
 
-if [ ! -z "$CFG_LLVM_TRIPLE" ]
-then
-    if [ $CFG_HOST_TRIPLE != $CFG_LLVM_TRIPLE ]
-    then
-        warn "LLVM host-triple $CFG_LLVM_TRIPLE differs from"
-        warn "detected host triple $CFG_HOST_TRIPLE"
-        warn "choosing LLVM host-triple instead"
-        msg ""
-        CFG_HOST_TRIPLE=$CFG_LLVM_TRIPLE
-    fi
-fi
-
 if [ -z "$CFG_TARGET_TRIPLES" ]
 then
     CFG_TARGET_TRIPLES="${CFG_HOST_TRIPLE}"
@@ -405,14 +363,6 @@ putvar CFG_C_COMPILER
 putvar CFG_PREFIX
 
 putvar CFG_LLVM_ROOT
-putvar CFG_LLVM_CONFIG
-putvar CFG_LLVM_INCDIR
-putvar CFG_LLVM_BINDIR
-putvar CFG_LLVM_LIBDIR
-putvar CFG_LLVM_CXXFLAGS
-putvar CFG_LLVM_LDFLAGS
-putvar CFG_LLVM_LIBS
-putvar CFG_LLVM_TRIPLE
 
 step_msg "making directories"
 
@@ -494,53 +444,59 @@ msg
 
 
 # Configure llvm. Here we go...
-step_msg "configuring LLVM"
-
 CFG_LLVM_SRC_DIR=${CFG_SRC_DIR}src/llvm
 CFG_LLVM_BUILD_DIR=${CFG_BUILD_DIR}/llvm
 # Just use LLVM straight from its build directory to avoid 'make install' time
 CFG_LLVM_INST_DIR=${CFG_LLVM_BUILD_DIR}/Release+Asserts
 
-LLVM_TARGETS="--enable-targets=x86,x86_64"
-LLVM_BUILD="--build=${CFG_HOST_TRIPLE}"
-LLVM_HOST="--host=${CFG_HOST_TRIPLE}"
-LLVM_TARGET="--target=${CFG_HOST_TRIPLE}"
-LLVM_OPTS="--enable-optimized --disable-docs"
+if [ -z $CFG_LLVM_ROOT ]
+then
+    step_msg "configuring LLVM"
 
-LLVM_CXX_32="g++ -m32"
-LLVM_CC_32="gcc -m32"
-LLVM_CFLAGS_32="-m32"
-LLVM_CXXFLAGS_32="-m32"
-LLVM_LDFLAGS_32="-m32"
+    LLVM_TARGETS="--enable-targets=x86,x86_64"
+    LLVM_BUILD="--build=${CFG_HOST_TRIPLE}"
+    LLVM_HOST="--host=${CFG_HOST_TRIPLE}"
+    LLVM_TARGET="--target=${CFG_HOST_TRIPLE}"
+    LLVM_OPTS="--enable-optimized --disable-docs"
 
-# FIXME: Need to change flags for x64
-LLVM_CXX=$LLVM_CXX_32
-LLVM_CC=$LLVM_CC_32
-LLVM_CFLAGS=$LLVM_CFLAGS_32
-LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
-LLVM_LDFLAGS=$LLVM_LDFLAGS_32
+    LLVM_CXX_32="g++ -m32"
+    LLVM_CC_32="gcc -m32"
+    LLVM_CFLAGS_32="-m32"
+    LLVM_CXXFLAGS_32="-m32"
+    LLVM_LDFLAGS_32="-m32"
 
-CXX=$LLVM_CXX
-CC=$LLVM_CC
-CFLAGS=$LLVM_CFLAGS
-CXXFLAGS=$LLVM_CXXFLAGS
-LDFLAGS=$LLVM_LDFLAGS
+    # FIXME: Need to change flags for x64
+    LLVM_CXX=$LLVM_CXX_32
+    LLVM_CC=$LLVM_CC_32
+    LLVM_CFLAGS=$LLVM_CFLAGS_32
+    LLVM_CXXFLAGS=$LLVM_CXXFLAGS_32
+    LLVM_LDFLAGS=$LLVM_LDFLAGS_32
 
-LLVM_FLAGS="$LLVM_TARGETS $LLVM_OPTS $LLVM_BUILD $LLVM_HOST $LLVM_TARGET"
+    CXX=$LLVM_CXX
+    CC=$LLVM_CC
+    CFLAGS=$LLVM_CFLAGS
+    CXXFLAGS=$LLVM_CXXFLAGS
+    LDFLAGS=$LLVM_LDFLAGS
 
-msg "configuring LLVM with:"
-msg "$LLVM_FLAGS"
+    LLVM_FLAGS="$LLVM_TARGETS $LLVM_OPTS $LLVM_BUILD $LLVM_HOST $LLVM_TARGET"
 
-export CXX
-export CC
-export CFLAGS
-export CXXFLAGS
-export LDFLAGS
+    msg "configuring LLVM with:"
+    msg "$LLVM_FLAGS"
 
-cd $CFG_LLVM_BUILD_DIR
-# FIXME: This won't work if CFG_SRC_DIR is absolute
-${CFG_BUILD_DIR}/${CFG_LLVM_SRC_DIR}/configure $LLVM_FLAGS
-cd $CFG_BUILD_DIR
+    export CXX
+    export CC
+    export CFLAGS
+    export CXXFLAGS
+    export LDFLAGS
+
+    cd $CFG_LLVM_BUILD_DIR
+    # FIXME: This won't work if CFG_SRC_DIR is absolute
+    ${CFG_BUILD_DIR}/${CFG_LLVM_SRC_DIR}/configure $LLVM_FLAGS
+    cd $CFG_BUILD_DIR
+else
+    # The user is using their own LLVM
+    CFG_LLVM_INST_DIR=$CFG_LLVM_ROOT
+fi
 
 putvar CFG_LLVM_SRC_DIR
 putvar CFG_LLVM_BUILD_DIR