camlp4: improve the bootstrapping scripts and recipe

git-svn-id: http://caml.inria.fr/svn/ocaml/version/3.12@10553 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02

3 files changed, 38 insertions, 8 deletions

diff --git a/build/camlp4-bootstrap-recipe.txt b/build/camlp4-bootstrap-recipe.txt
index 5fa5092c63..9f1417a2fa 100644
--- a/build/camlp4-bootstrap-recipe.txt
+++ b/build/camlp4-bootstrap-recipe.txt
@@ -2,16 +2,11 @@
   make clean
   ./build/distclean.sh
   ./configure -prefix `pwd`/_install
-  ./build/world.sh byte
+  ./build/fastworld.sh
   # Go to "Bootstrap camlp4"
 
 === Install the bootstrapping camlp4 processor ===
   ./build/install.sh
-  # Either extend your PATH with _install
-    export PATH=`pwd`/_install:$PATH
-  # Or copy just the needed files (for better understanding)
-    cp _build/camlp4/camlp4boot.byte <somewhereinPATH>/bin/camlp4boot
-    cp _build/camlp4/camlp4o.byte <somewhereinPATH>/bin/camlp4o
 
 === Build camlp4 ===
   # This step is not needed right after a "./build/world.sh byte"
@@ -20,6 +15,8 @@
 === Bootstrap camlp4 ===
   # First "Build camlp4"
   # Then "Install the bootstrapping camlp4 processor"
+  # Indeed the following bootstrapping script
+  # does use the installed version!
   ./build/camlp4-bootstrap.sh
   # If the fixpoint not is reached yet
     # Go to "Bootstrap camlp4"
@@ -27,6 +24,12 @@
     # Have a look at the changes in
     # camlp4/boot it may be a good idea to commit them
 
+=== Generate Camlp4Ast.ml ===
+  # First "Install the bootstrapping camlp4 processor"
+  # Indeed the following bootstrapping script
+  # does use the installed version!
+  ./build/camlp4-mkCamlp4Ast.sh
+
 === Case study "let open M in e" ===
 
  Open the revised parser
@@ -89,7 +92,7 @@
    (* let open i in e *)
  | ExOpI of loc and ident and expr
 
- Then build. Bootstrap once and build again.
+ Then "Generate Camlp4Ast.ml" and build.
 
  We get a single warning in Camlp4/Struct/Camlp4Ast2OCamlAst.ml but
  don't fix it now.
@@ -135,7 +138,7 @@ Add new parsing rules for := but keep the old actions for now.
     (* module i := i *)
     | WcMoS of loc and ident and ident
 
-3/ Build and bootstrap once.
+3/ "Generate Camlp4Ast.ml" and build.
 
 4/ Change the generated camlp4/boot/camlp4boot.ml:
    Look for ":=" and change occurences of
diff --git a/build/camlp4-bootstrap.sh b/build/camlp4-bootstrap.sh
index c594c80e26..ef9a93c01b 100755
--- a/build/camlp4-bootstrap.sh
+++ b/build/camlp4-bootstrap.sh
@@ -5,6 +5,9 @@
 set -e
 cd `dirname $0`/..
 
+. config/config.sh
+export PATH=$BINDIR:$PATH
+
 TMPTARGETS="\
   camlp4/boot/Lexer.ml"
 
diff --git a/build/camlp4-mkCamlp4Ast.sh b/build/camlp4-mkCamlp4Ast.sh
new file mode 100755
index 0000000000..2a30b9ab22
--- /dev/null
+++ b/build/camlp4-mkCamlp4Ast.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+# $Id$
+set -e
+cd `dirname $0`/..
+
+. config/config.sh
+export PATH=$BINDIR:$PATH
+
+CAMLP4AST=camlp4/Camlp4/Struct/Camlp4Ast.ml
+BOOTP4AST=camlp4/boot/Camlp4Ast.ml
+
+[ -f "$BOOTP4AST" ] && mv "$BOOTP4AST" "$BOOTP4AST.old"
+rm -f "_build/$BOOTP4AST"
+rm -f "_build/$CAMLP4AST"
+
+if [ -x ./boot/myocamlbuild.native ]; then
+  OCAMLBUILD=./boot/myocamlbuild.native
+else
+  OCAMLBUILD="./boot/ocamlrun boot/myocamlbuild"
+fi
+$OCAMLBUILD $CAMLP4AST
+
+echo promote $CAMLP4AST
+cp _build/$CAMLP4AST camlp4/boot/`basename $CAMLP4AST`