From 66746cb86340aceb1fa5dec197bafbc70158c020 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 17 Jun 2015 11:13:53 +0200
Subject: Update bootstrap process with libbutl dependency

---
 INSTALL   | 23 +++++++++++++++++++++++
 bootstrap | 52 ++++++++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 71 insertions(+), 4 deletions(-)

diff --git a/INSTALL b/INSTALL
index 9669735..b37563e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -8,6 +8,13 @@ it. To accomplish this, use the 'bootstrap' shell script found in the
 root directory of the build2 project. The following is a recommended
 sequence of steps:
 
+0. Get libbutl unless one is already present in the build2 directory
+   (whether one is bundled depends on how you obtained build2 source
+   code). Place it next to build2, so that you have:
+
+   libbutl/ (or libbutl-x.y.z/)
+   build2/  (or build2-x.y.z/)
+
 1. Execute 'bootstrap' specifying the C++ compiler to be used if necessary
    (default is 'g++'). For example:
 
@@ -21,6 +28,11 @@ sequence of steps:
 
    $ build/b-boot config.cxx=clang++-3.5
 
+   If you had to obtain libbutl at step 0, then you will also have to
+   specify its location, for example:
+
+   $ build/b-boot config.import.libbutl=../libbutl ...
+
    The result of this command is saved as 'build/b'.
 
 3. Finally, rebuild the build2 binary using the binary built at step 2
@@ -30,3 +42,14 @@ sequence of steps:
    $ build/b-prev config.cxx=clang++-3.5 clean
    $ build/b-prev config.cxx=clang++-3.5 configure update
    $ diff -b build/b build/b-prev
+
+   If you had to obtain libbutl, then this becomes ('...' stands for
+   any extra configuration you may have, like the C++ compiler above):
+
+   $ mv build/b build/b-prev
+   $ build/b-prev config.import.libbutl=../libbutl ... clean
+   $ cd ../libbutl
+   $ ../build2/build/b-prev ... configure
+   $ cd ../build2
+   $ build/b-prev config.import.libbutl=../libbutl ... configure update
+   $ diff build/b build/b-prev
diff --git a/bootstrap b/bootstrap
index 86dcc78..e36d079 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1,8 +1,7 @@
 #!/bin/sh
 
-src="build/*.cxx build/config/*.cxx build/bin/*.cxx build/cxx/*.cxx"
-
 cxx=g++
+libbutl=
 
 while test $# -ne 0; do
   case $1 in
@@ -20,6 +19,19 @@ while test $# -ne 0; do
       cxx=$1
       shift
       ;;
+    --libbutl)
+      shift
+      if test $# -eq 0; then
+	echo "error: libbutl path expected after --libbutl" 1>&2
+	exit 1
+      fi
+      if test ! -d "$1"; then
+	echo "error: libbutl directory '$1' does not exist" 1>&2
+	exit 1
+      fi
+      libbutl=$1
+      shift
+      ;;
     *)
       echo "error: unknown option $1" 1>&2
       exit 1
@@ -27,5 +39,37 @@ while test $# -ne 0; do
   esac
 done
 
-echo $cxx -std=c++14 -I. -o build/b-boot $src 1>&2
-exec $cxx -std=c++14 -I. -o build/b-boot $src
+# See if there is libbutl or libbutl-* in the current directory and
+# one directory up.
+#
+if test -z "$libbutl"; then
+  if test -d libbutl; then
+    libbutl=libbutl
+  else
+    libbutl=`echo libbutl-*`
+    if test ! -d "$libbutl"; then
+      libbutl=
+    fi
+  fi
+fi
+
+if test -z "$libbutl"; then
+  if test -d ../libbutl; then
+    libbutl=../libbutl
+  else
+    libbutl=`echo ../libbutl-*`
+    if test ! -d "$libbutl"; then
+      libbutl=
+    fi
+  fi
+fi
+
+if test -z "$libbutl"; then
+  echo "error: unable to find libbutl, use --libbutl to specify its location" 1>&2
+  exit 1
+fi
+
+src="build/*.cxx build/config/*.cxx build/bin/*.cxx build/cxx/*.cxx $libbutl/butl/*.cxx"
+
+echo $cxx -std=c++1y -I$libbutl -I. -o build/b-boot $src 1>&2
+exec $cxx -std=c++1y -I$libbutl -I. -o build/b-boot $src
-- 
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