#! /bin/sh
-# a quick hack script to generate necessary files from
-# auto* tools.
-#
-# WARNING: if you run this you will change the versions
-# of the tools which are used and, maybe, required!
- touch Makefile.am configure.ac
-{
- echo "running libtoolize" >&2
- libtoolize --force --copy --automake
-} && {
- echo "running aclocal" >&2
- aclocal
-} && {
- echo "running autoheader [ignore the warnings]" >&2
- autoheader
-} && {
- echo "running automake" >&2
- automake --force-missing --foreign -a -c
-} && {
- echo "running autoconf" >&2
- autoconf
-} &&
- echo "autogen complete" >&2 ||
- echo "ERROR: autogen.sh failed, autogen is incomplete" >&2
+#
+# Run 'autoreconf' to build 'configure', 'Makefile.in' and other configure
+# control files.
+#
+# The first time this is run on a GIT checkout the only files that exist are
+# configure.ac and Makefile.am; all of the autotools support scripts are
+# missing. They are instantiated with autoreconf --force --install.
+#
+# For regular ("tarball") distributions all the files should exist. We do not
+# want them to be updated *under any circumstances*. It should never be
+# necessary to run autogen.sh because ./configure --enable-maintainer-mode says
+# what to do if Makefile.am or configure.ac are changed.
+#
+# It is *probably* OK to update the files on a GIT checkout, because they have
+# come from the local tools, but leave that to the user who is assumed to know
+# whether it is ok or required.
+#
+# This script is intended to work without arguments, there are, however, hidden
+# arguments (a) for use while testing the script and (b) to fix up systems that
+# have been broken. If (b) is required the script prompts for the correct
+# options. For this reason the options are *NOT* documented in the help; this
+# is deliberate; UTSL.
+#
+clean=
+maintainer=
+while test $# -gt 0
+do
+ case "$1" in
+ --maintainer)
+ maintainer=1;;
+
+ --clean)
+ clean=1;;
+
+ *)
+ exec >&2
+ echo "$0: usage: ./autogen.sh"
+ if test -d .git
+ then
+ echo " ./autogen.sh generates the configure script and"
+ echo " Makefile.in, or refreshes them after changes to Makefile.am"
+ echo " or configure.ac. You may prefer to just run autoreconf."
+ elif test -z "$maintainer"
+ then
+ echo " DO NOT RUN THIS SCRIPT."
+ echo " If you need to change Makefile.am or configure.ac then you"
+ echo " also need to run ./configure --enable-maintainer-mode and"
+ echo " use the appropriate autotools, *NOT* this script, to update"
+ echo " everything, please check the documentation of autoreconf."
+ echo " WARNING: libpng is intentionally generated with a known,"
+ echo " fixed, set of autotools. It is known *NOT* to work with"
+ echo " the collection of autotools distributed on highly reputable"
+ echo " operating systems."
+ echo " Remember: autotools is GNU software, you are expected to"
+ echo " pay for support."
+ else
+ echo " You have run autogen.sh with --maintainer enabled and you"
+ echo " are not using a GIT distribution, then you have given an"
+ echo " unrecognized argument. This is not good. --maintainer"
+ echo " switches off any assumptions that you might not know what"
+ echo " you are doing."
+ fi
+ exit 1;;
+ esac
+
+ shift
+done
+#
+# First check for a set of the autotools files; if absent then this is assumed
+# to be a GIT version and the local autotools must be used. If present this
+# is a tarball distribution and the script should not be used. If partially
+# present bad things are happening.
+#
+# The autotools generated files:
+libpng_autotools_files="Makefile.in aclocal.m4 config.guess config.h.in\
+ config.sub configure depcomp install-sh ltmain.sh missing test-driver"
+#
+# Files generated by versions of configue >2.68 or automake >1.13 (i.e. later
+# versions than those required by configure.ac):
+libpng_autotools_extra="compile"
+#
+# These are separate because 'maintainer-clean' does not remove them.
+libpng_libtool_files="scripts/libtool.m4 scripts/ltoptions.m4\
+ scripts/ltsugar.m4 scripts/ltversion.m4 scripts/lt~obsolete.m4"
+
+libpng_autotools_dirs="autom4te.cache" # not required
+#
+# The configure generated files:
+libpng_configure_files="Makefile config.h config.log config.status\
+ libpng-config libpng.pc libtool stamp-h1"
+
+libpng_configure_dirs=".deps"
+#
+# We must remove the configure generated files as well as the autotools
+# generated files if autotools are regenerated because otherwise if configure
+# has been run without "--enable-maintainer-mode" make can do a partial update
+# of Makefile. These functions do the two bits of cleaning.
+clean_autotools(){
+ rm -rf $libpng_autotools_files $libpng_libtool_files $libpng_autotools_dirs
+ rm -rf $libpng_autotools_extra
+}
+
+clean_configure(){
+ rm -rf $libpng_configure_files $libpng_configure_dirs
+}
+#
+# Clean: remove everything (this is to help with testing)
+if test -n "$clean"
+then
+ clean_configure
+ if test -n "$maintainer"
+ then
+ clean_autotools
+ fi
+
+ exit 0
+fi
+#
+# Validate the distribution.
+libpng_autotools_file_found=
+libpng_autotools_file_missing=
+for file in $libpng_autotools_files
+do
+ if test -f "$file"
+ then
+ libpng_autotools_file_found=1
+ else
+ libpng_autotools_file_missing=1
+ fi
+done
+#
+# Presence of one of these does not *invalidate* missing, but absence
+# invalidates found.
+for file in $libpng_libtool_files
+do
+ if test ! -f "$file"
+ then
+ libpng_autotools_file_missing=1
+ fi
+done
+#
+# The cache directory doesn't matter - it will be regenerated and does not exist
+# anyway in a tarball.
+#
+# Either everything is missing or everything is there, the --maintainer option
+# just changes this so that the mode is set to generate all the files.
+mode=
+if test -z "$libpng_autotools_file_found" -o -n "$maintainer"
+then
+ mode="autoreconf"
+else
+ if test -n "$libpng_autotools_file_missing"
+ then
+ mode="broken"
+ else
+ mode="configure"
+ fi
+fi
+#
+# So:
+case "$mode" in
+ autoreconf)
+ # Clean in case configure files exist
+ clean_configure
+ clean_autotools
+ # Everything must be initialized, so use --force
+ if autoreconf --warnings=all --force --install
+ then
+ missing=
+ for file in $libpng_autotools_files
+ do
+ test -f "$file" || missing=1
+ done
+ # ignore the cache directory
+ test -z "$missing" || {
+ exec >&2
+ echo "autoreconf was run, but did not produce all the expected"
+ echo "files. It is likely that your autotools installation is"
+ echo "not compatible with that expected by libpng."
+ exit 1
+ }
+ else
+ exec >&2
+ echo "autoreconf failed: your version of autotools is incompatible"
+ echo "with this libpng version. Please use a distributed archive"
+ echo "(which includes the autotools generated files) and run configure"
+ echo "instead."
+ exit 1
+ fi;;
+
+ configure)
+ if test -d .git
+ then
+ exec >&2
+ echo "ERROR: running autoreconf on an initialized sytem"
+ echo " This is not necessary; it is only necessary to remake the"
+ echo " autotools generated files if Makefile.am or configure.ac"
+ echo " change and make does the right thing with:"
+ echo
+ echo " ./configure --enable-maintainer-mode."
+ echo
+ echo " You can run autoreconf yourself if you don't like maintainer"
+ echo " mode and you can also just run autoreconf -f -i to initialize"
+ echo " everything in the first place; this script is only for"
+ echo " compatibility with prior releases."
+ exit 1
+ else
+ exec >&2
+ echo "autogen.sh is intended only to generate 'configure' on systems"
+ echo "that do not have it. You have a complete 'configure', if you"
+ echo "need to change Makefile.am or configure.ac you also need to"
+ echo "run configure with the --enable-maintainer-mode option."
+ exit 1
+ fi;;
+
+ broken)
+ exec >&2
+ echo "Your system has a partial set of autotools generated files."
+ echo "autogen.sh is unable to proceed. The full set of files is"
+ echo "contained in the libpng 'tar' distribution archive and you do"
+ echo "not need to run autogen.sh if you use it."
+ exit 1;;
+esac
projects / platform / upstream / libpng.git / blobdiff