From 295084718d1b9307d7adac59f6396b740807155a Mon Sep 17 00:00:00 2001
From: Tristan Gingold <tgingold@free.fr>
Date: Sat, 17 Sep 2016 13:59:41 +0200
Subject: Add suport for llvm 3.6 - 3.9

---
 configure | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

(limited to 'configure')

diff --git a/configure b/configure
index 49ce69380..fed905e2e 100755
--- a/configure
+++ b/configure
@@ -25,7 +25,7 @@ PIC_FLAGS=-fPIC
 show_help=no
 progname=$0
 
-subst_vars="CC GNATMAKE CFLAGS LDFLAGS build srcdir prefix backend libdirsuffix libdirreverse gcc_src_dir llvm_config llvm_be backtrace_lib build_mode EXEEXT SOEXT PIC_FLAGS"
+subst_vars="CC GNATMAKE CFLAGS LDFLAGS build srcdir prefix backend libdirsuffix libdirreverse gcc_src_dir llvm_config llvm_be llvm_be_ver backtrace_lib build_mode EXEEXT SOEXT PIC_FLAGS"
 
 # Find srcdir
 srcdir=`dirname $progname`
@@ -46,9 +46,6 @@ fi
 gcc_version=`grep '^gcc version' $srcdir/BUILD.txt |
  sed -e 's/gcc version \([0-9.]*\) \[.*\]\.$/\1/'`
 
-# Read required llvm version from BUILD.txt file
-llvm_version=`grep '^llvm version' $srcdir/BUILD.txt | cut -d ' ' -f 3`
-
 # Check $1 is a prefix of $2
 check_version()
 {
@@ -94,7 +91,7 @@ Options [defaults in brackets]:
   --prefix=PREFIX             install in PREFIX [$prefix]
   --srcdir=SRCDIR             source code path [$srcdir]
   --with-gcc=DIR              use gcc backend from DIR (needs gcc $gcc_version)
-  --with-llvm-config=PATH     use llvm from PATH (needs llvm $llvm_version)
+  --with-llvm-config=PATH     use llvm from PATH (needs llvm 3.5 - 3.9)
   --with-backtrace-lib=LIB.a  link with libbacktrace LIB.a to display a
                               backtrace on errors (only for llvm).
 EOF
@@ -159,15 +156,28 @@ fi
 
 # For llvm backend, check llvm-config
 if test $backend = llvm; then
-    llvm_ver=`"$llvm_config" --version 2>/dev/null`
+    llvm_version=`"$llvm_config" --version 2>/dev/null`
     if [ $? != 0 ]; then
 	echo "cannot run $llvm_config"
 	exit 1
     fi
-    if ! check_version $llvm_version $llvm_ver; then
-	echo "Mismatch llvm version $llvm_ver from $llvm_config"
-	echo "Debugging is not enabled"
+    if check_version 3.5 $llvm_version; then
+	llvm_be=llvm
+    elif check_version 3.6 $llvm_version || 
+	 check_version 3.7 $llvm_version ||
+         check_version 3.8 $llvm_version;
+    then
+	echo "Debugging is not enabled with llvm $llvm_version"
+	llvm_be=llvm-nodebug
+	# Tested with llvm 3.5, so assume 3.6, 3.7 and 3.8
+	llvm_be_ver=35
+    elif check_version 3.9 $llvm_version; then
+	echo "Debugging is not enabled with llvm $llvm_version"
 	llvm_be=llvm-nodebug
+	llvm_be_ver=39
+    else
+	echo "Unhandled version llvm $llvm_version"
+	exit 1
     fi
     # For llvm, the c++ compiler is used for linking so that the standard c++
     # library is included.  However, the linker needs the no_compact_unwind
-- 
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