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#######################################################################
# #
# The Compcert verified compiler #
# #
# François Pottier, INRIA Paris-Rocquencourt #
# #
# Copyright Institut National de Recherche en Informatique et en #
# Automatique. All rights reserved. This file is distributed #
# under the terms of the INRIA Non-Commercial License Agreement. #
# #
#######################################################################
# This is a Makefile fragment for Menhir-specific aspects.
# Executable.
MENHIR = menhir
# This flag can be set to true or false. It controls whether we use
# Menhir's table back-end or code back-end. The table back-end is a
# bit slower, but supports more features, including advanced error
# reporting.
MENHIR_TABLE = true
# To pass or not to pass --table.
ifeq ($(MENHIR_TABLE),true)
MENHIR_MODE = --table
else
MENHIR_MODE =
endif
# Options.
MENHIR_FLAGS = -v --no-stdlib -la 1
# Using Menhir in --table mode requires MenhirLib.
ifeq ($(MENHIR_TABLE),true)
MENHIR_LIBS = menhirLib.cmx
else
MENHIR_LIBS =
endif
# The compilation rule.
%.ml %.mli: %.mly
$(MENHIR) $(MENHIR_MODE) $(MENHIR_FLAGS) $<
# Note 1: finding where MenhirLib has been installed would be easier if we
# could depend on ocamlfind, but as far as I understand and as of today,
# CompCert can be compiled and linked even in the absence of ocamlfind.
# So, we should not require ocamlfind.
# Note 2: Menhir has options --suggest-comp-flags and --suggest-link-flags
# which we are supposed to help solve this difficulty. However, they don't
# work for us out of the box, because if Menhir has been installed using
# ocamlfind, then Menhir will suggest using ocamlfind (i.e. it will suggest
# -package and -linkpkg options), which we don't want to do.
# Solution: Ask Menhir first. If Menhir answers "-package menhirLib", then
# Menhir was installed with ocamlfind, so we should not ask Menhir, but we
# can instead ask ocamlfind where Menhir's library was installed. Otherwise,
# Menhir answers directly with a "-I ..." directive, which we use.
ifeq ($(MENHIR_TABLE),true)
MENHIR_SUGGESTION = $(MENHIR) $(MENHIR_MODE) --suggest-comp-flags
MENHIR_INCLUDES := $(shell \
if $(MENHIR_SUGGESTION) | grep -e "-package" >/dev/null ; then \
echo "-I `ocamlfind query menhirLib`" ; \
else \
$(MENHIR_SUGGESTION) ; \
fi)
else
MENHIR_INCLUDES =
endif
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