scripts/configure.ac - third_party/opencircuitdesign.com/open_pdks - Git at Google


            
            AC_INIT([open_pdks], [1.0], [github.com/RTimothyEdwards/open_pdks])


            # AC_PREFIX_DEFAULT(/usr)

            
            AC_CONFIG_MACRO_DIR(m4)


            ## REQUIRES: https://www.gnu.org/software/autoconf-archive/ax_python_module.html#ax_python_module

            
            AM_PATH_PYTHON([3.4])

            
            AX_PYTHON_MODULE([distutils],[])


            # Check for Mac OS X gsed vs. sed

            
            m4_ifndef([AC_PROG_SED],

            
                [AC_DEFUN([AC_PROG_SED],[AC_ARG_VAR([SED])

            
            	AC_CHECK_PROGS([SED],[gsed sed])])])


            AC_PROG_SED

            
            AC_SUBST(SED)


            realpath() {

            
                # Cross-platform, handles empty argument, and ~

            
                if @<:@ "$#" != "1" @:>@ ; then return ; fi

            
                python3 -c 'import os,sys;print(os.path.realpath(os.path.expanduser(sys.argv@<:@1@:>@)))' $1

            
            }


            ENABLED_TECHS=


            # Export the open_pdks top level directory

            
            OPENPDKS_TOP=`cd .. && pwd`


            # detect PDKs based on directories that include Makefile.in files

            
            m4_define([M4_GET_TECHS], [m4_normalize(m4_esyscmd(cd .. && find -H * -mindepth 1 -maxdepth 1 -name "Makefile.in" -exec dirname {} \; | tr "\n" " "))])


            # define tools

            
            # define tools to install setup files for.  This does not imply that the tools are

            
            # available on the system;  just that open_pdks will install the setup files for them.

            
            m4_define([M4_GET_TOOLS], [m4_normalize(m4_esyscmd(cat ./tools.txt | tr "\n" " "))])


            # check for the source and install paths for each PDK.

            
            AC_DEFUN([M4_GEN_WITH_PDK_ARGS], [


                # --enable-pdk-[pdk]=/path/to/pdk

            
                m4_foreach_w(pdk, $1, [

            
                    echo "Checking technology pdk..."

            
                    m4_define([pdkvar], [m4_normalize(m4_esyscmd(echo pdk | tr "a-z-" "A-Z_"))])


                    pdkvar[]_ENABLED_VARIANTS="all"

            
                    pdkvar[]_SOURCE_PATH=""

            
                    pdkvar[]_LINK_TARGETS="none"

            
                    pdkvar[]_AUTO="0"


                    AC_ARG_ENABLE(pdk-[pdk],

            
                        [AS_HELP_STRING([--enable-pdk-[pdk]=@<:@/path/to/pdk/@:>@ --disable-pdk-[pdk]], "location of the source files for the pdk (pdks with a [pdk]_url file can automatically download them if the path is omitted)")],

            
                        [

            
                            if test "$enableval" == "yes" -o "$enableval" == "YES"; then

            
                                export pdkvar[]_SOURCE_PATH=../sources/pdk-[pdk]

            
                        	    pdkvar[]_AUTO="1"

            
            		    ENABLED_TECHS="$ENABLED_TECHS pdk"

            
                            elif test "$enableval" == "no" -o "$enableval" == "NO"; then

            
                                echo "Disabling pdk..."

            
                            else

            
                                pdkvar[]_SOURCE_PATH=$enableval

            
            		    ENABLED_TECHS="$ENABLED_TECHS pdk"

            
                            fi

            
                        ], [

            
                        ]

            
                    )


                    if @<:@ "$[]pdkvar[]_SOURCE_PATH" != "" @:>@; then

            
                        pdkvar[]_SOURCE_PATH=`realpath $[]pdkvar[]_SOURCE_PATH`

            
                        pdkvar[]_BASENAME=`basename $[]pdkvar[]_SOURCE_PATH`

            
            	    if @<:@ "$[]pdkvar[]_BASENAME" = "libraries" @:>@; then

            
            		pdkvar[]_SOURCE_PATH=`dirname $[]pdkvar[]_SOURCE_PATH`

            
            	    fi

            
                        # Basic check that the PDK path exists, unless depending on Makefile

            
            	    # to download it automatically.

            
                        if @<:@ "$[]pdkvar[]_AUTO" = "0" @:>@; then

            
                            AC_MSG_NOTICE([Checking specified path for 'pdk' at $[]pdkvar[]_SOURCE_PATH])

            
                            AC_CHECK_FILE($pdkvar[]_SOURCE_PATH,[

            
                                AC_MSG_NOTICE(['pdk' source path found at $pdkvar[]_SOURCE_PATH])

            
                            ], [

            
                                AC_MSG_ERROR([Specified path for 'pdk' at $pdkvar[]_SOURCE_PATH not found])

            
                            ])

            
            	    else

            
            		AC_MSG_NOTICE([PDK 'pdk' will be downloaded automatically during make.])

            
            	    fi


                        # --with-pdk-link-targets=PDK_LINK_TARGETS

            
                        AC_ARG_WITH(pdk-link-targets,

            
                            [AS_HELP_STRING([--with-pdk-link-targets=none|source], "make symbolic links to existing files @<:@default=none@:>@")],

            
                            [[]pdkvar[]_LINK_TARGETS=$with_[]pdk[]_link_targets]

            
                        )

            
                        AC_SUBST([]pdkvar[]_LINK_TARGETS)

            
                        AC_MSG_NOTICE([Link targets set to $pdkvar[]_LINK_TARGETS])


                        # --with-pdk-variants=PDK_ENABLED_VARIANTS

            
                        AC_ARG_WITH(pdk-variants,

            
                            [AS_HELP_STRING([--with-pdk-variants=all|A|B|...], "compile/install specified PDK variants only @<:@default=all@:>@")],

            
                            [[]pdkvar[]_ENABLED_VARIANTS=$with_[]pdk[]_variants]

            
                        )

            
                        AC_SUBST([]pdkvar[]_ENABLED_VARIANTS)

            
                        AC_MSG_NOTICE([Enabled variants set to $pdkvar[]_ENABLED_VARIANTS])

            
                    fi


                    AC_SUBST(pdkvar[]_SOURCE_PATH)

            
                    AC_SUBST(pdkvar[]_LINK_TARGETS)

            
                    AC_SUBST(pdkvar[]_ENABLED_VARIANTS)

            
                ])

            
            ])


            AC_MSG_NOTICE([Found technology directories: M4_GET_TECHS()])


            M4_GEN_WITH_PDK_ARGS(M4_GET_TECHS())


            # Export the list of known technologies to the Makefile

            
            ALL_TECHS="M4_GET_TECHS()"

            
            AC_SUBST(ALL_TECHS)


            # Set variables for tool setups

            
            AC_DEFUN([M4_GEN_WITH_TOOLS], [

            
                m4_foreach_w(tool, $1, [

            
                    m4_define([toolvar], [m4_normalize(m4_esyscmd(echo tool | tr "a-z-" "A-Z_"))])


                    toolvar[]_DISABLED=0

            
                    AC_ARG_ENABLE(tool,

            
                        AS_HELP_STRING(

            
                            --enable-tool

            
                            Enable or disable tool setup @<:@default=enabled@:>@

            
                        ), [

            
                            if test "$enableval" == "no" -o "$enableval" == "NO"; then

            
                                toolvar[]_DISABLED=1

            
                            fi

            
                        ]

            
                    )

            
                    AC_SUBST(toolvar[]_DISABLED)

            
                ])

            
            ])


            AC_MSG_NOTICE([Found tools: M4_GET_TOOLS()])


            M4_GEN_WITH_TOOLS(M4_GET_TOOLS())


            # Magic

            
            AC_PATH_PROG(MAGIC, magic)

            
            if test -z "$MAGIC"; then

            
               AC_MSG_ERROR([You need 'magic' to generate the needed various cell views.])

            
            fi

            
            AC_PATH_PROG(PATCH, patch)

            
            if test -z "$PATCH"; then

            
               AC_MSG_ERROR([You need 'patch' to apply patches.])

            
            fi


            # Other installations (libraries or tools if applicable)

            
            AC_DEFUN([M4_GEN_INSTALLATION], [

            
                m4_define([target], $1)

            
                m4_define([targetvar], [m4_normalize(m4_esyscmd(echo target | tr "a-z-" "A-Z_"))])

            
                m4_define([flag], $2)

            
                m4_define([location], $3)


                # echo target targetvar flag location


                targetvar[]_PATH=""


                AC_ARG_ENABLE(

            
                    flag,

            
                    AS_HELP_STRING(

            
                        [--enable-flag@<:@=path@:>@],

            
                        [Install target. If path is omitted, the repository will be downloaded. @<:@default=enabled@:>@]

            
                    ), [

            
                        if test "$enableval" == "yes" -o "$enableval" == "YES"; then

            
                            AC_MSG_NOTICE([Package 'target' will be installed automatically during make.])

            
                    	export targetvar[]_PATH=location/target

            
                        elif test "$enableval" == "no" -o "$enableval" == "NO"; then

            
                            AC_MSG_NOTICE([Disabling package 'target'])

            
                		export targetvar[]_PATH=""

            
                        else

            
                            targetvar[]_PATH=$enableval

            
                            AC_MSG_NOTICE([Enabling package 'target' at $[]targetvar[]_PATH])

            
                        fi

            
                        targetvar[]_PATH=`realpath $[]targetvar[]_PATH`

            
                    ],[

            
                        AC_MSG_NOTICE([Package 'target' will be installed automatically during make.])

            
            	    targetvar[]_PATH=location/target

            
            	]

            
                )


                $4


                AC_SUBST(targetvar[]_PATH)

            
            ])


            # Optional installations (like the above, but disabled by default)

            
            AC_DEFUN([M4_OPT_INSTALLATION], [

            
                m4_define([target], $1)

            
                m4_define([targetvar], [m4_normalize(m4_esyscmd(echo target | tr "a-z-" "A-Z_"))])

            
                m4_define([flag], $2)

            
                m4_define([location], $3)


                # echo target targetvar flag location


                targetvar[]_PATH=""


                AC_ARG_ENABLE(

            
                    flag,

            
                    AS_HELP_STRING(

            
                        [--enable-flag@<:@=path@:>@],

            
                        [Install target. If path is omitted, the repository will be downloaded. @<:@default=disabled@:>@]

            
                    ), [

            
                        if test "$enableval" == "yes" -o "$enableval" == "YES"; then

            
                            AC_MSG_NOTICE([Package 'target' will be installed automatically during make.])

            
                    	export targetvar[]_PATH=location/target

            
                        elif test "$enableval" == "no" -o "$enableval" == "NO"; then

            
                            AC_MSG_NOTICE([Disabling package 'target'])

            
                		export targetvar[]_PATH=""

            
                        else

            
                            targetvar[]_PATH=$enableval

            
                            AC_MSG_NOTICE([Enabling package 'target' at $[]targetvar[]_PATH])

            
                        fi

            
                        targetvar[]_PATH=`realpath $[]targetvar[]_PATH`

            
                    ],[

            
                        AC_MSG_NOTICE([Package 'target' will not be installed.])

            
            	]

            
                )


                $4


                AC_SUBST(targetvar[]_PATH)

            
            ])


            # NOTE:  This part of the configuration should be based off of the

            
            # contents of a file with a predetermined name existing in each of

            
            # the open PDK directories.


            # SkyWater sky130 essential

            
            M4_GEN_INSTALLATION(sky130_fd_pr, primitive-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_fd_io, io-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_fd_sc_hs, sc-hs-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_fd_sc_ms, sc-ms-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_fd_sc_ls, sc-ls-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_fd_sc_lp, sc-lp-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_fd_sc_hd, sc-hd-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_fd_sc_hdll, sc-hdll-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_fd_sc_hvl, sc-hvl-sky130, ../sources)

            
            M4_GEN_INSTALLATION(sky130_ml_xx_hd, alpha-sky130, ../sources)

            
            M4_GEN_INSTALLATION(xschem_sky130, xschem-sky130, ../sources)

            
            M4_GEN_INSTALLATION(klayout_sky130, klayout-sky130, ../sources)

            
            M4_GEN_INSTALLATION(precheck_sky130, precheck-sky130, ../sources)


            # SkyWater sky130 optional

            
            M4_OPT_INSTALLATION(sky130_sram_macros, sram-sky130, ../sources)

            
            M4_OPT_INSTALLATION(sky130_fd_bd_sram, sram-space-sky130, ../sources)

            
            M4_OPT_INSTALLATION(sky130_fd_pr_reram, reram-sky130, ../sources)

            
            M4_OPT_INSTALLATION(sky130_osu_t12, osu-t12-sky130, ../sources)

            
            M4_OPT_INSTALLATION(sky130_osu_t15, osu-t15-sky130, ../sources)

            
            M4_OPT_INSTALLATION(sky130_osu_t18, osu-t18-sky130, ../sources)


            # GlobalFoundries gf180mcu essential

            
            M4_GEN_INSTALLATION(gf180mcu_fd_pr, primitive-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_fd_pv, verification-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_fd_io, io-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_fd_sc_mcu7t5v0, sc-7t5v0-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_fd_sc_mcu9t5v0, sc-9t5v0-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_fd_ip_sram, sram-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_ocd_alpha, alpha-gf180mcu, ../sources)


            # GlobalFoundries gf180mcu optional

            
            M4_GEN_INSTALLATION(gf180mcu_osu_sc, osu-sc-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_as_sc, avalon-sc-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_re_efuse, re-efuse-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_ocd_io, ocd-io-gf180mcu, ../sources)

            
            M4_GEN_INSTALLATION(gf180mcu_ocd_ip_sram, ocd-sram-gf180mcu, ../sources)


            AC_DEFUN([M4_GEN_WITH_TOOLS], [

            
                m4_foreach_w(tool, $1, [

            
                    m4_define([toolvar], [m4_normalize(m4_esyscmd(echo tool | tr "a-z-" "A-Z_"))])


                    toolvar[]_DISABLED=0

            
                    AC_ARG_ENABLE(tool,

            
                        AS_HELP_STRING(

            
                            --enable-tool --disable-tool,

            
                            Enable or disable tool setup @<:@default=enabled@:>@

            
                        ),

            
                        [

            
                            if test "$enableval" == "no" -o "$enableval" == "NO"; then

            
                                toolvar[]_DISABLED=1

            
                            fi

            
                        ],

            
                    )

            
                    AC_SUBST(toolvar[]_DISABLED)

            
                ])

            
            ])


            AC_MSG_NOTICE([Tools enabled for PDK setup installation: M4_GET_TOOLS()])


            # Check for "--with-reference"

            
            USE_REFERENCE=0

            
            AC_ARG_WITH(

            
                [reference],

            
                AS_HELP_STRING(

            
                    [--with-reference],

            
                    [Use PDK JSON file reference commit values for sources @<:@default=no@:>@]

            
                ), [

            
                    pdks_reference=$withval

            
                    if test "$withval" == "yes" -o "$withval" == "YES"; then

            
                        USE_REFERENCE=1

            
            	else

            
                        USE_REFERENCE="$pdks_reference"

            
                    fi

            
                ],

            
            )

            
            AC_SUBST(USE_REFERENCE)


            # Check for "--with-ef-style"

            
            EF_STYLE=0

            
            AC_ARG_WITH(

            
                [ef-style],

            
                AS_HELP_STRING(

            
                    [--with-ef-style],

            
                    [Use efabless style file system structure @<:@default=no@:>@]

            
                ), [

            
                    pdks_ef_style=$withval

            
                    if test "$withval" == "yes" -o "$withval" == "YES"; then

            
                        EF_STYLE=1

            
                    fi

            
                ],

            
            )

            
            AC_SUBST(EF_STYLE)


            # Export the list of enabled technologies to the Makefile

            
            AC_SUBST(ENABLED_TECHS)

            
            # Export the top level directory of open_pdks

            
            AC_SUBST(OPENPDKS_TOP)


            MAKEFILES=$(find -L .. -name "Makefile.in" | sed 's/\(.*\)\.in/\1/g')

            
            AC_CONFIG_FILES($MAKEFILES)


            AC_OUTPUT


            AC_MSG_RESULT(Build configured successfully)
	AC_INIT([open_pdks], [1.0], [github.com/RTimothyEdwards/open_pdks])

	# AC_PREFIX_DEFAULT(/usr)
	AC_CONFIG_MACRO_DIR(m4)

	## REQUIRES: https://www.gnu.org/software/autoconf-archive/ax_python_module.html#ax_python_module
	AM_PATH_PYTHON([3.4])
	AX_PYTHON_MODULE([distutils],[])

	# Check for Mac OS X gsed vs. sed
	m4_ifndef([AC_PROG_SED],
	[AC_DEFUN([AC_PROG_SED],[AC_ARG_VAR([SED])
	AC_CHECK_PROGS([SED],[gsed sed])])])

	AC_PROG_SED
	AC_SUBST(SED)

	realpath() {
	# Cross-platform, handles empty argument, and ~
	if @<:@ "$#" != "1" @:>@ ; then return ; fi
	python3 -c 'import os,sys;print(os.path.realpath(os.path.expanduser(sys.argv@<:@1@:>@)))' $1
	}

	ENABLED_TECHS=

	# Export the open_pdks top level directory
	OPENPDKS_TOP=`cd .. && pwd`

	# detect PDKs based on directories that include Makefile.in files
	m4_define([M4_GET_TECHS], [m4_normalize(m4_esyscmd(cd .. && find -H * -mindepth 1 -maxdepth 1 -name "Makefile.in" -exec dirname {} \; \| tr "\n" " "))])

	# define tools
	# define tools to install setup files for. This does not imply that the tools are
	# available on the system; just that open_pdks will install the setup files for them.
	m4_define([M4_GET_TOOLS], [m4_normalize(m4_esyscmd(cat ./tools.txt \| tr "\n" " "))])

	# check for the source and install paths for each PDK.
	AC_DEFUN([M4_GEN_WITH_PDK_ARGS], [

	# --enable-pdk-[pdk]=/path/to/pdk
	m4_foreach_w(pdk, $1, [
	echo "Checking technology pdk..."
	m4_define([pdkvar], [m4_normalize(m4_esyscmd(echo pdk \| tr "a-z-" "A-Z_"))])

	pdkvar[]_ENABLED_VARIANTS="all"
	pdkvar[]_SOURCE_PATH=""
	pdkvar[]_LINK_TARGETS="none"
	pdkvar[]_AUTO="0"

	AC_ARG_ENABLE(pdk-[pdk],
	[AS_HELP_STRING([--enable-pdk-[pdk]=@<:@/path/to/pdk/@:>@ --disable-pdk-[pdk]], "location of the source files for the pdk (pdks with a [pdk]_url file can automatically download them if the path is omitted)")],
	[
	if test "$enableval" == "yes" -o "$enableval" == "YES"; then
	export pdkvar[]_SOURCE_PATH=../sources/pdk-[pdk]
	pdkvar[]_AUTO="1"
	ENABLED_TECHS="$ENABLED_TECHS pdk"
	elif test "$enableval" == "no" -o "$enableval" == "NO"; then
	echo "Disabling pdk..."
	else
	pdkvar[]_SOURCE_PATH=$enableval
	ENABLED_TECHS="$ENABLED_TECHS pdk"
	fi
	], [
	]
	)

	if @<:@ "$[]pdkvar[]_SOURCE_PATH" != "" @:>@; then
	pdkvar[]_SOURCE_PATH=`realpath $[]pdkvar[]_SOURCE_PATH`
	pdkvar[]_BASENAME=`basename $[]pdkvar[]_SOURCE_PATH`
	if @<:@ "$[]pdkvar[]_BASENAME" = "libraries" @:>@; then
	pdkvar[]_SOURCE_PATH=`dirname $[]pdkvar[]_SOURCE_PATH`
	fi
	# Basic check that the PDK path exists, unless depending on Makefile
	# to download it automatically.
	if @<:@ "$[]pdkvar[]_AUTO" = "0" @:>@; then
	AC_MSG_NOTICE([Checking specified path for 'pdk' at $[]pdkvar[]_SOURCE_PATH])
	AC_CHECK_FILE($pdkvar[]_SOURCE_PATH,[
	AC_MSG_NOTICE(['pdk' source path found at $pdkvar[]_SOURCE_PATH])
	], [
	AC_MSG_ERROR([Specified path for 'pdk' at $pdkvar[]_SOURCE_PATH not found])
	])
	else
	AC_MSG_NOTICE([PDK 'pdk' will be downloaded automatically during make.])
	fi

	# --with-pdk-link-targets=PDK_LINK_TARGETS
	AC_ARG_WITH(pdk-link-targets,
	[AS_HELP_STRING([--with-pdk-link-targets=none\|source], "make symbolic links to existing files @<:@default=none@:>@")],
	[[]pdkvar[]_LINK_TARGETS=$with_[]pdk[]_link_targets]
	)
	AC_SUBST([]pdkvar[]_LINK_TARGETS)
	AC_MSG_NOTICE([Link targets set to $pdkvar[]_LINK_TARGETS])

	# --with-pdk-variants=PDK_ENABLED_VARIANTS
	AC_ARG_WITH(pdk-variants,
	[AS_HELP_STRING([--with-pdk-variants=all\|A\|B\|...], "compile/install specified PDK variants only @<:@default=all@:>@")],
	[[]pdkvar[]_ENABLED_VARIANTS=$with_[]pdk[]_variants]
	)
	AC_SUBST([]pdkvar[]_ENABLED_VARIANTS)
	AC_MSG_NOTICE([Enabled variants set to $pdkvar[]_ENABLED_VARIANTS])
	fi

	AC_SUBST(pdkvar[]_SOURCE_PATH)
	AC_SUBST(pdkvar[]_LINK_TARGETS)
	AC_SUBST(pdkvar[]_ENABLED_VARIANTS)
	])
	])

	AC_MSG_NOTICE([Found technology directories: M4_GET_TECHS()])

	M4_GEN_WITH_PDK_ARGS(M4_GET_TECHS())

	# Export the list of known technologies to the Makefile
	ALL_TECHS="M4_GET_TECHS()"
	AC_SUBST(ALL_TECHS)

	# Set variables for tool setups
	AC_DEFUN([M4_GEN_WITH_TOOLS], [
	m4_foreach_w(tool, $1, [
	m4_define([toolvar], [m4_normalize(m4_esyscmd(echo tool \| tr "a-z-" "A-Z_"))])

	toolvar[]_DISABLED=0
	AC_ARG_ENABLE(tool,
	AS_HELP_STRING(
	--enable-tool
	Enable or disable tool setup @<:@default=enabled@:>@
	), [
	if test "$enableval" == "no" -o "$enableval" == "NO"; then
	toolvar[]_DISABLED=1
	fi
	]
	)
	AC_SUBST(toolvar[]_DISABLED)
	])
	])

	AC_MSG_NOTICE([Found tools: M4_GET_TOOLS()])

	M4_GEN_WITH_TOOLS(M4_GET_TOOLS())

	# Magic
	AC_PATH_PROG(MAGIC, magic)
	if test -z "$MAGIC"; then
	AC_MSG_ERROR([You need 'magic' to generate the needed various cell views.])
	fi
	AC_PATH_PROG(PATCH, patch)
	if test -z "$PATCH"; then
	AC_MSG_ERROR([You need 'patch' to apply patches.])
	fi

	# Other installations (libraries or tools if applicable)
	AC_DEFUN([M4_GEN_INSTALLATION], [
	m4_define([target], $1)
	m4_define([targetvar], [m4_normalize(m4_esyscmd(echo target \| tr "a-z-" "A-Z_"))])
	m4_define([flag], $2)
	m4_define([location], $3)

	# echo target targetvar flag location

	targetvar[]_PATH=""

	AC_ARG_ENABLE(
	flag,
	AS_HELP_STRING(
	[--enable-flag@<:@=path@:>@],
	[Install target. If path is omitted, the repository will be downloaded. @<:@default=enabled@:>@]
	), [
	if test "$enableval" == "yes" -o "$enableval" == "YES"; then
	AC_MSG_NOTICE([Package 'target' will be installed automatically during make.])
	export targetvar[]_PATH=location/target
	elif test "$enableval" == "no" -o "$enableval" == "NO"; then
	AC_MSG_NOTICE([Disabling package 'target'])
	export targetvar[]_PATH=""
	else
	targetvar[]_PATH=$enableval
	AC_MSG_NOTICE([Enabling package 'target' at $[]targetvar[]_PATH])
	fi
	targetvar[]_PATH=`realpath $[]targetvar[]_PATH`
	],[
	AC_MSG_NOTICE([Package 'target' will be installed automatically during make.])
	targetvar[]_PATH=location/target
	]
	)

	$4

	AC_SUBST(targetvar[]_PATH)
	])

	# Optional installations (like the above, but disabled by default)
	AC_DEFUN([M4_OPT_INSTALLATION], [
	m4_define([target], $1)
	m4_define([targetvar], [m4_normalize(m4_esyscmd(echo target \| tr "a-z-" "A-Z_"))])
	m4_define([flag], $2)
	m4_define([location], $3)

	# echo target targetvar flag location

	targetvar[]_PATH=""

	AC_ARG_ENABLE(
	flag,
	AS_HELP_STRING(
	[--enable-flag@<:@=path@:>@],
	[Install target. If path is omitted, the repository will be downloaded. @<:@default=disabled@:>@]
	), [
	if test "$enableval" == "yes" -o "$enableval" == "YES"; then
	AC_MSG_NOTICE([Package 'target' will be installed automatically during make.])
	export targetvar[]_PATH=location/target
	elif test "$enableval" == "no" -o "$enableval" == "NO"; then
	AC_MSG_NOTICE([Disabling package 'target'])
	export targetvar[]_PATH=""
	else
	targetvar[]_PATH=$enableval
	AC_MSG_NOTICE([Enabling package 'target' at $[]targetvar[]_PATH])
	fi
	targetvar[]_PATH=`realpath $[]targetvar[]_PATH`
	],[
	AC_MSG_NOTICE([Package 'target' will not be installed.])
	]
	)

	$4

	AC_SUBST(targetvar[]_PATH)
	])

	# NOTE: This part of the configuration should be based off of the
	# contents of a file with a predetermined name existing in each of
	# the open PDK directories.

	# SkyWater sky130 essential
	M4_GEN_INSTALLATION(sky130_fd_pr, primitive-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_fd_io, io-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_fd_sc_hs, sc-hs-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_fd_sc_ms, sc-ms-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_fd_sc_ls, sc-ls-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_fd_sc_lp, sc-lp-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_fd_sc_hd, sc-hd-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_fd_sc_hdll, sc-hdll-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_fd_sc_hvl, sc-hvl-sky130, ../sources)
	M4_GEN_INSTALLATION(sky130_ml_xx_hd, alpha-sky130, ../sources)
	M4_GEN_INSTALLATION(xschem_sky130, xschem-sky130, ../sources)
	M4_GEN_INSTALLATION(klayout_sky130, klayout-sky130, ../sources)
	M4_GEN_INSTALLATION(precheck_sky130, precheck-sky130, ../sources)

	# SkyWater sky130 optional
	M4_OPT_INSTALLATION(sky130_sram_macros, sram-sky130, ../sources)
	M4_OPT_INSTALLATION(sky130_fd_bd_sram, sram-space-sky130, ../sources)
	M4_OPT_INSTALLATION(sky130_fd_pr_reram, reram-sky130, ../sources)
	M4_OPT_INSTALLATION(sky130_osu_t12, osu-t12-sky130, ../sources)
	M4_OPT_INSTALLATION(sky130_osu_t15, osu-t15-sky130, ../sources)
	M4_OPT_INSTALLATION(sky130_osu_t18, osu-t18-sky130, ../sources)

	# GlobalFoundries gf180mcu essential
	M4_GEN_INSTALLATION(gf180mcu_fd_pr, primitive-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_fd_pv, verification-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_fd_io, io-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_fd_sc_mcu7t5v0, sc-7t5v0-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_fd_sc_mcu9t5v0, sc-9t5v0-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_fd_ip_sram, sram-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_ocd_alpha, alpha-gf180mcu, ../sources)

	# GlobalFoundries gf180mcu optional
	M4_GEN_INSTALLATION(gf180mcu_osu_sc, osu-sc-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_as_sc, avalon-sc-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_re_efuse, re-efuse-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_ocd_io, ocd-io-gf180mcu, ../sources)
	M4_GEN_INSTALLATION(gf180mcu_ocd_ip_sram, ocd-sram-gf180mcu, ../sources)

	AC_DEFUN([M4_GEN_WITH_TOOLS], [
	m4_foreach_w(tool, $1, [
	m4_define([toolvar], [m4_normalize(m4_esyscmd(echo tool \| tr "a-z-" "A-Z_"))])

	toolvar[]_DISABLED=0
	AC_ARG_ENABLE(tool,
	AS_HELP_STRING(
	--enable-tool --disable-tool,
	Enable or disable tool setup @<:@default=enabled@:>@
	),
	[
	if test "$enableval" == "no" -o "$enableval" == "NO"; then
	toolvar[]_DISABLED=1
	fi
	],
	)
	AC_SUBST(toolvar[]_DISABLED)
	])
	])

	AC_MSG_NOTICE([Tools enabled for PDK setup installation: M4_GET_TOOLS()])

	# Check for "--with-reference"
	USE_REFERENCE=0
	AC_ARG_WITH(
	[reference],
	AS_HELP_STRING(
	[--with-reference],
	[Use PDK JSON file reference commit values for sources @<:@default=no@:>@]
	), [
	pdks_reference=$withval
	if test "$withval" == "yes" -o "$withval" == "YES"; then
	USE_REFERENCE=1
	else
	USE_REFERENCE="$pdks_reference"
	fi
	],
	)
	AC_SUBST(USE_REFERENCE)

	# Check for "--with-ef-style"
	EF_STYLE=0
	AC_ARG_WITH(
	[ef-style],
	AS_HELP_STRING(
	[--with-ef-style],
	[Use efabless style file system structure @<:@default=no@:>@]
	), [
	pdks_ef_style=$withval
	if test "$withval" == "yes" -o "$withval" == "YES"; then
	EF_STYLE=1
	fi
	],
	)
	AC_SUBST(EF_STYLE)

	# Export the list of enabled technologies to the Makefile
	AC_SUBST(ENABLED_TECHS)
	# Export the top level directory of open_pdks
	AC_SUBST(OPENPDKS_TOP)

	MAKEFILES=$(find -L .. -name "Makefile.in" \| sed 's/\(.*\)\.in/\1/g')
	AC_CONFIG_FILES($MAKEFILES)

	AC_OUTPUT

	AC_MSG_RESULT(Build configured successfully)