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hdf5/bin/genparser

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#! /bin/bash
#
# Copyright by The HDF Group.
# All rights reserved.
#
# This file is part of HDF5. The full HDF5 copyright notice, including
# terms governing use, modification, and redistribution, is contained in
# the COPYING file, which can be found at the root of the source code
# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
# If you do not have access to either file, you may request a copy from
# help@hdfgroup.org.
#
# This script runs flex/lex and bison/yacc to generate parser code for
# the high-level library. It used to be a part of autogen.sh, but many
# people encountered problems with installing flex and bison on their
# system and the parser code rarely changes, so those parts of the
# script were moved to their own file.
#
# NOTE CAREFULLY!
#
# There is NO dependency in either the autotools or CMake to regenerate
# the parser code. If you modify H5LT analyze.l or H5LTparse.y, you
# will need to run this scrpit manually on a system with a suitable
# lexer and parser generator.
#
# IMPORTANT OS X NOTE
#
# If you are using OS X, you will probably not have flex or bison
# installed. In addtion, even if you do have bison installed, the bison
# version you have installed may also have a bug that makes it unable to
# process our input files.
#
# The easiest way to fix this is to install everything via Homebrew:
#
# http://brew.sh/
#
# After you install the base packages, install flex/bison.
#
# brew install flex
# brew install bison
#
# END IMPORTANT OS X NOTE
#
# If you want to use a particular version of flex or bison, the paths
# to each tool can be overridden using the following environment
# variables:
#
# HDF5_FLEX
# HDF5_BISON
#
# This script takes two potential options:
#
# -p
#
# When this is selected, the flex/bison versions are set to the paths
# and versions used by The HDF Group to produce the released versions
# of the library.
#
# NOTE: This is probably temporary. Once we update our dev machines
# to have recent versions of the autotools this option will probably
# be removed.
#
# -v
#
# This emits some extra information, mainly tool versions.
echo
echo "*******************************************"
echo "* HDF5 high-level parser generator script *"
echo "*******************************************"
echo
# Default is not verbose output
verbose=false
optspec=":hpv-"
while getopts "$optspec" optchar; do
case "${optchar}" in
h)
echo "usage: $0 [OPTIONS] /path/to/hl/src/directory"
echo
echo " -h Print this help message."
echo
echo " -p Used by THG to use hard-codes flex/bison"
echo " paths on THG machines. Not for non-HDF-Group"
echo " users!"
echo
echo " -v Show more verbose output."
echo
echo " NOTE: Each tool can be set via an environment variable."
echo " These are documented inside this script."
echo
exit 0
;;
p)
echo "Setting THG production mode..."
echo
production=true
;;
v)
echo "Setting verbosity: high"
echo
verbose=true
;;
*)
if [ "$OPTERR" != 1 ] || [ "${optspec:0:1}" = ":" ]; then
echo "Non-option argument: '-${OPTARG}'" >&2
fi
;;
esac
done
# Get the path to the hl src directory
shift $(($OPTIND - 1))
path_to_hl_src=$1
if test -z ${path_to_hl_src}; then
echo "*** ERROR *** - Path to hl/src not set"
echo "Please add the path to the hl/src directory as a parameter"
echo "See $0 -h for more help."
echo
exit -1
fi
if [ "$production" = true ] ; then
# Production mode
#
# Hard-code canonical HDF Group tool locations.
# If paths to tools are not specified, assume they are
# located in /usr/hdf/bin/AUTOTOOLS and set paths accordingly.
if test -z ${HDF5_BISON}; then
HDF5_BISON=/usr/hdf/bin/AUTOTOOLS/bison
fi
if test -z ${HDF5_FLEX}; then
HDF5_FLEX=/usr/hdf/bin/AUTOTOOLS/flex
fi
else
# Not in production mode
#
# If paths to autotools are not specified, use whatever the system
# has installed as the default. We use 'which <tool>' to
# show exactly what's being used.
if test -z ${HDF5_BISON}; then
HDF5_BISON=$(which bison)
fi
if test -z ${HDF5_FLEX}; then
HDF5_FLEX=$(which flex)
fi
fi # production
# Make sure that these versions of the tools are in the path
BISON_DIR=`dirname ${HDF5_BISON}`
FLEX_DIR=`dirname ${HDF5_FLEX}`
PATH=${FLEX_DIR}:${BISON_DIR}:$PATH
# Run flex and bison
# automatically generates hl/src/H5LTanalyze.c and hl/src/H5LTparse.c
# Note that, as of Xcode 6.1 (2015), the default bison version on OS X
# is old enough to have the circular dependency bug. You'll have
# to install a later version of bison. See the OS X note at the top
# of this script.
echo
echo "Generating H5LT parser code (requires yacc/bison):"
echo "Generate hl/src/H5LTparse.c from hl/src/H5LTparse.y"
# HDF5_BISON is set via the environment or 'which bison', above
if test -z ${HDF5_BISON}; then
echo
echo "*************************"
echo " ERROR - bison not found"
echo "*************************"
echo "bison is required to generate parser code in H5LT"
echo
exit 127
fi
if [ "$verbose" = true ] ; then
${HDF5_BISON} --version
fi
${HDF5_BISON} -pH5LTyy -o ${path_to_hl_src}/H5LTparse.c -d ${path_to_hl_src}/H5LTparse.y
echo
echo "Generating H5LT lexer code (requires lex/flex):"
echo "Generate hl/src/H5LTanalyze.c from hl/src/H5LTanalyze.l"
# HDF5_FLEX is set via the environment or 'which flex', above
if test -z ${HDF5_FLEX}; then
echo
echo "************************"
echo " ERROR - flex not found"
echo "************************"
echo "flex is required to generate lexer code in H5LT"
echo
exit 127
fi
if [ "$verbose" = true ] ; then
${HDF5_FLEX} --version
fi
${HDF5_FLEX} --nounistd -PH5LTyy -o ${path_to_hl_src}/H5LTanalyze.c ${path_to_hl_src}/H5LTanalyze.l
# fix H5LTparse.c to declare H5LTyyparse return type as an hid_t
# instead of int. Currently the generated function H5LTyyparse is
# generated with a return value of type int, which is a mapping to the
# flex yyparse function. The return value in the HL library should be
# an hid_t.
# I propose to not use flex to generate this function, but for now I am
# adding a perl command to find and replace this function declaration in
# H5LTparse.c.
perl -0777 -pi -e 's/int yyparse/hid_t yyparse/igs' ${path_to_hl_src}/H5LTparse.c
perl -0777 -pi -e 's/int\nyyparse/hid_t\nyyparse/igs' ${path_to_hl_src}/H5LTparse.c
perl -0777 -pi -e 's/int H5LTyyparse/hid_t H5LTyyparse/igs' ${path_to_hl_src}/H5LTparse.c
# Add code that disables warnings in the flex/bison-generated code.
#
# Note that the GCC pragmas did not exist until gcc 4.2. Earlier versions
# will simply ignore them, but we want to avoid those warnings.
for f in ${path_to_hl_src}/H5LTparse.c ${path_to_hl_src}/H5LTanalyze.c
do
echo '#if defined __GNUC__ && 402 <= __GNUC__ * 100 + __GNUC_MINOR__ ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wconversion" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wimplicit-function-declaration" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wlarger-than=" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wmissing-prototypes" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wnested-externs" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wold-style-definition" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wredundant-decls" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wsign-compare" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wsign-conversion" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wstrict-overflow" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wstrict-prototypes" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wsuggest-attribute=pure" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wswitch-default" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wunused-function" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wunused-macros" ' >> tmp.out
echo '#pragma GCC diagnostic ignored "-Wunused-parameter" ' >> tmp.out
echo '#elif defined __SUNPRO_CC ' >> tmp.out
echo '#pragma disable_warn ' >> tmp.out
echo '#elif defined _MSC_VER ' >> tmp.out
echo '#pragma warning(push, 1) ' >> tmp.out
echo '#endif ' >> tmp.out
cat $f >> tmp.out
mv tmp.out $f
done
echo
exit 0
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