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configure.ac
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configure.ac
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#########################################################################
# #
# Author: Copyright (C) 2018, 2021-2024 Mark Grant #
# #
# Released under the GPLv3 only. #
# SPDX-License-Identifier: GPL-3.0-only #
# #
# Purpose: #
# Autoconfigure script file to configure gen-gnulib project. #
# #
# cmd line syntax of standard configure: #
# ./configure --help #
# #
# Layout: (Only relevant sections will exist). #
# SECTION 1: Initialisation & Setup #
# SECTION 2: Architecture, target and host checks #
# SECTION 3: Command line arguments #
# SECTION 4: Compiler setup #
# SECTION 5: Check for programs #
# SECTION 6: Check for libraries #
# SECTION 7: Check for header files #
# SECTION 8: Check for types #
# SECTION 9: Check for structures #
# SECTION 10: Check for compiler characteristics #
# SECTION 11: Check for library functions #
# SECTION 12: Check for pkg-config files #
# SECTION 13: Check for system services #
# SECTION 14: Additional checks & variables #
# SECTION 15: Specify the output files #
# #
#########################################################################
#########################################
# #
# SECTION 1: Initialisation & Setup #
# #
#########################################
AC_COPYRIGHT([Copyright (C) 2018, 2021-2024 Mark Grant
This script is free to copy or distribute under the terms set out
in the package license. See COPYING for details.])
AC_REVISION([$Revision: 1.2.1 $])
AC_PREREQ([2.69])
#
# The following macro uses git, if available, to provide versioning information.
# The logic is as follows:-
# If git is not available, is not initialised or no commit has been made, then
# the local variable pkg_version will be used.
# If git is available but no Tag has been created then just a commit identifier
# will be used.
# If git is available and a tag has been created then the most recent tag, plus
# number of commits since the tag, plus a commit identifier will be used.
# The package version in ac init will be used to create an output variable which
# can be used by ac output and / or the sed setup below to substitute bookmarks
# in source files.
#
# Set pkg_version for a default hard-coded version number.
m4_define(pkg_version, 1.3.0)
AC_INIT([gnulib Install Script], m4_esyscmd([ \
git describe --always 1>/dev/null 2>/dev/null \
&& sed --help 1>/dev/null 2>/dev/null \
&& git describe --always | sed 's/v//' | tr -d '\n' \
|| echo pkg_version | tr -d '\n']),
[[email protected]], [gen-gnulib])
AC_MSG_NOTICE(initialisation and setup)
AC_SUBST(pkgversion, $PACKAGE_VERSION)
# Separate AutoTools generated files from project root.
AC_CONFIG_AUX_DIR([build-aux])
#
# Passes the options to all am files. Puts objects in the sub-directory
# containing the source. Forces tar to use --format=posix in make dist.
# This also checks :- BSD install make variable set mkdir -p
# gawk
#
AM_INIT_AUTOMAKE([-Wall -Werror subdir-objects tar-pax])
#
# Standard macros will be automatically placed in m4.
# Programmer defined macros should be placed in, say, m4extra which allows us
# to exclude the standard macros from being git tracked. This other directory
# must be specified as an include option in the Makefile.am ACLOCAL_AMFLAGS
# e.g.
# ACLOCAL_AMFLAGS = -I m4 -I m4extra
#
AC_CONFIG_MACRO_DIR([m4])
#########################################
# #
# SECTION 5: Check for programs #
# #
#########################################
AC_MSG_NOTICE(checking for basic programs that have AutoConf checks)
#
# The small set of tools you can expect to find on any machine.
#
# awk date grep od
# basename diff join rm
# cat dirname ln rmdir
# cc egrep ls sed
# chgrp expr mkdir sleep
# chown expr (‘|’) mkfifo sort
# chmod expr (‘:’) mknod tar
# cmp fgrep mktemp touch
# cp find mv tr
#
# (For further information including limitations to the above, see Section 11.15
# in the GNU AutoConf Manual).
#
# If using am init automake, gl early or lt init the following programs are
# automatically checked:-
#
# am init automake
# BSD install mkdir -p gawk
#
# gl early
# ar grep egrep ranlib
#
# lt init
# fgrep ranlib sed
#
# Basic and AutoTools program checks.
#
AC_PROG_AWK
AC_PROG_EGREP
AC_PROG_FGREP
AC_PROG_GREP
AC_PROG_LN_S
AC_PROG_MKDIR_P
AC_PROG_SED
AC_MSG_NOTICE(checking for some standard AutoTools required programs)
AC_PROG_INSTALL
AC_MSG_NOTICE(checking for particular programs required by this build)
AC_CHECK_PROG(ECHO, echo, yes, no)
if test "x$ECHO" = "xno" ; then
AC_MSG_ERROR(echo not found - needed at run time)
fi
AC_CHECK_PROG([TAR], [tar], [yes], [no])
if test "x$TAR" = "xno" ; then
AC_MSG_ERROR([tar not found])
fi
AC_CHECK_PROG([TXT2MAN], [txt2man], [yes], [no])
if test "x$TXT2MAN" = "xno" ; then
AC_MSG_ERROR([txt2man not found])
fi
AC_CHECK_PROG([TXT2MANWRAP], [txt2manwrap], [yes], [no])
if test "x$TXT2MANWRAP" = "xno" ; then
AC_MSG_ERROR([txt2manwrap not found])
fi
AC_MSG_NOTICE(checking for particular programs required at build and run time)
AC_PATH_PROG([BASH], [bash], [no])
if test "x$BASH" = "xno" ; then
AC_MSG_ERROR([bash not found])
fi
AC_MSG_NOTICE(checking for particular programs required at run time)
AC_CHECK_PROG(GNULIB_TOOL, gnulib-tool, yes, no)
if test "x$GNULIB_TOOL" = "xno" ; then
AC_MSG_WARN([gnulib-tool not found - needed at run time])
fi
AC_CHECK_PROG([CAT], [cat], [yes], [no])
if test "x$CAT" = "xno" ; then
AC_MSG_WARN(cat not found - needed at run time)
fi
AC_CHECK_PROG([GETOPT], [getopt], [yes], [no])
if test "x$GETOPT" = "xno" ; then
AC_MSG_WARN(getopt not found - needed at run time)
fi
AC_CHECK_PROG(PRINTF, printf, yes, no)
if test "x$PRINTF" = "xno" ; then
AC_MSG_WARN(printf not found - needed at run time)
fi
#################################################
# #
# SECTION 14: Additional checks & variables #
# #
#################################################
AC_MSG_NOTICE(processing additional checks and variables)
#
# Now set up a sed sequence to substitute bookmarks in script files with either
# standard GNU Directory Variables, or with programmer-defined variables set up
# using an AC_SUBST macro above. This sed sequence will be invoked at programmer
# discretion at sub-directory Makefile.am level.
# ----------------------
#
# prefix /usr/local (typically)
# exec_prefix ${prefix}
# bindir ${exec_prefix}/bin user executables
# sbindir ${exec_prefix}/sbin system admin executables
# libexecdir ${exec_prefix}/libexec program executables
# libdir ${exec_prefix}/lib object code libraries
# sysconfdir ${prefix}/etc read-only single-machine data
# sharedstatedir ${prefix}/com modifiable architecture-independent data
# localstatedir ${prefix}/var modifiable single-machine data
# runstatedir ${localstatedir}/run
# includedir ${prefix}/include C header files
# oldincludedir $usr/include C header files
# datarootdir ${prefix}/share read-only arch.-independent data root
# localedir ${datarootdir}/locale locale-dependent data
# datadir ${datarootdir} read-only architecture-independent data
# mandir ${datarootdir}/man man documentation
# infodir ${datarootdir}/info info documentation
# docdir ${datarootdir}/doc/${PACKAGE} documentation root
# htmldir ${docdir} html documentation
# dvidir ${docdir} dvi documentation
# pdfdir ${docdir} pdf documentation
# psdir ${docdir} ps documentation
# lispdir ${datarootdir}/emacs/site-lisp
# pkgdatadir ${datarootdir}/${PACKAGE}
# pkgincludedir ${includedir}/${PACKAGE}
# pkglibdir ${libdir}/${PACKAGE}
# pkglibexecdir ${libexecdir}/${PACKAGE}
#
AC_SUBST([edit], ["sed \
-e 's|@bashlocation[@]|\$(BASH)|g' \
-e 's|@pkgversion[@]|\$(pkgversion)|g' \
-e 's|@prefix[@]|\$(prefix)|g' \
-e 's|@exec_prefix[@]|\$(exec_prefix)|g' \
-e 's|@bindir[@]|\$(bindir)|g' \
-e 's|@sbindir[@]|\$(sbindir)|g' \
-e 's|@libexecdir[@]|\$(libexecdir)|g' \
-e 's|@libdir[@]|\$(libdir)|g' \
-e 's|@sysconfdir[@]|\$(sysconfdir)|g' \
-e 's|@sharedstatedir[@]|\$(sharedstatedir)|g' \
-e 's|@localstatedir[@]|\$(localstatedir)|g' \
-e 's|@runstatedir[@]|\$(runstatedir)|g' \
-e 's|@includedir[@]|\$(includedir)|g' \
-e 's|@oldincludedir[@]|\$(oldincludedir)|g' \
-e 's|@datarootdir[@]|\$(datarootdir)|g' \
-e 's|@localedir[@]|\$(localedir)|g' \
-e 's|@datadir[@]|\$(datadir)|g' \
-e 's|@mandir[@]|\$(mandir)|g' \
-e 's|@infodir[@]|\$(infodir)|g' \
-e 's|@docdir[@]|\$(docdir)|g' \
-e 's|@htmldir[@]|\$(htmldir)|g' \
-e 's|@dvidir[@]|\$(dvidir)|g' \
-e 's|@pdfdir[@]|\$(pdfdir)|g' \
-e 's|@psdir[@]|\$(psdir)|g' \
-e 's|@lispdir[@]|\$(lispdir)|g' \
-e 's|@pkgdatadir[@]|\$(pkgdatadir)|g' \
-e 's|@pkgincludedir[@]|\$(pkgincludedir)|g' \
-e 's|@pkglibdir[@]|\$(pkglibdir)|g' \
-e 's|@pkglibexecdir[@]|\$(pkglibexecdir)|g'"])
#########################################
# #
# SECTION 15: Specify the output files #
# #
#########################################
AC_MSG_NOTICE(processing output files)
#
# Non-Makefile files to generate.
# AC_CONFIG_FILES should not be used to substitute AutoConf Installation
# Directory Variables, (bindir and friends), except in Makefiles and pkg-config
# files. See GNU AutoConf manual section 4.8.2 Installation Directory Variables.
#
# Project Makefiles to create.
AC_CONFIG_FILES([Makefile
src/man/1/Makefile
src/prg/bash/Makefile])
AC_OUTPUT