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https://git.code.sf.net/p/libpng/code.git
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0e9cd91609
"libpng_autotools_extra" list in autogen.sh because it was causing a false positive for missing files (bug report by Robert C. Seacord).
226 lines
7.8 KiB
Bash
Executable File
226 lines
7.8 KiB
Bash
Executable File
#! /bin/sh
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#
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# Run 'autoreconf' to build 'configure', 'Makefile.in' and other configure
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# control files.
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#
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# The first time this is run on a GIT checkout the only files that exist are
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# configure.ac and Makefile.am; all of the autotools support scripts are
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# missing. They are instantiated with autoreconf --force --install.
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#
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# For regular ("tarball") distributions all the files should exist. We do not
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# want them to be updated *under any circumstances*. It should never be
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# necessary to run autogen.sh because ./configure --enable-maintainer-mode says
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# what to do if Makefile.am or configure.ac are changed.
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#
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# It is *probably* OK to update the files on a GIT checkout, because they have
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# come from the local tools, but leave that to the user who is assumed to know
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# whether it is ok or required.
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#
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# This script is intended to work without arguments, there are, however, hidden
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# arguments (a) for use while testing the script and (b) to fix up systems that
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# have been broken. If (b) is required the script prompts for the correct
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# options. For this reason the options are *NOT* documented in the help; this
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# is deliberate; UTSL.
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#
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clean=
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maintainer=
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while test $# -gt 0
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do
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case "$1" in
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--maintainer)
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maintainer=1;;
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--clean)
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clean=1;;
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*)
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exec >&2
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echo "$0: usage: ./autogen.sh"
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if test -d .git
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then
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echo " ./autogen.sh generates the configure script and"
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echo " Makefile.in, or refreshes them after changes to Makefile.am"
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echo " or configure.ac. You may prefer to just run autoreconf."
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elif test -z "$maintainer"
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then
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echo " DO NOT RUN THIS SCRIPT."
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echo " If you need to change Makefile.am or configure.ac then you"
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echo " also need to run ./configure --enable-maintainer-mode and"
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echo " use the appropriate autotools, *NOT* this script, to update"
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echo " everything, please check the documentation of autoreconf."
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echo " WARNING: libpng is intentionally generated with a known,"
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echo " fixed, set of autotools. It is known *NOT* to work with"
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echo " the collection of autotools distributed on highly reputable"
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echo " operating systems."
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echo " Remember: autotools is GNU software, you are expected to"
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echo " pay for support."
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else
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echo " You have run autogen.sh with --maintainer enabled and you"
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echo " are not using a GIT distribution, then you have given an"
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echo " unrecognized argument. This is not good. --maintainer"
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echo " switches off any assumptions that you might not know what"
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echo " you are doing."
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fi
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exit 1;;
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esac
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shift
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done
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#
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# First check for a set of the autotools files; if absent then this is assumed
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# to be a GIT version and the local autotools must be used. If present this
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# is a tarball distribution and the script should not be used. If partially
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# present bad things are happening.
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#
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# The autotools generated files:
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libpng_autotools_files="Makefile.in aclocal.m4 config.guess config.h.in
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config.sub configure depcomp install-sh ltmain.sh missing\
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test-driver"
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#
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# Files generated by versions of configue >2.68 or automake >1.13 (i.e. later
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# versions than those required by configure.ac):
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libpng_autotools_extra="compile config.h.in~"
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#
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# These are separate because 'maintainer-clean' does not remove them.
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libpng_libtool_files="scripts/libtool.m4 scripts/ltoptions.m4\
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scripts/ltsugar.m4 scripts/ltversion.m4 scripts/lt~obsolete.m4"
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libpng_autotools_dirs="autom4te.cache" # not required
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#
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# The configure generated files:
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libpng_configure_files="Makefile config.h config.log config.status\
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libpng-config libpng.pc libtool stamp-h1"
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libpng_configure_dirs=".deps"
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#
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# We must remove the configure generated files as well as the autotools
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# generated files if autotools are regenerated because otherwise if configure
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# has been run without "--enable-maintainer-mode" make can do a partial update
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# of Makefile. These functions do the two bits of cleaning.
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clean_autotools(){
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rm -rf $libpng_autotools_files $libpng_libtool_files $libpng_autotools_dirs
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rm -rf $libpng_autotools_extra
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}
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clean_configure(){
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rm -rf $libpng_configure_files $libpng_configure_dirs
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}
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#
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# Clean: remove everything (this is to help with testing)
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if test -n "$clean"
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then
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clean_configure
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if test -n "$maintainer"
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then
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clean_autotools
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fi
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exit 0
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fi
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#
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# Validate the distribution.
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libpng_autotools_file_found=
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libpng_autotools_file_missing=
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for file in $libpng_autotools_files
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do
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if test -f "$file"
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then
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libpng_autotools_file_found=1
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else
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libpng_autotools_file_missing=1
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fi
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done
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#
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# Presence of one of these does not *invalidate* missing, but absence
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# invalidates found.
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for file in $libpng_libtool_files
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do
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if test ! -f "$file"
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then
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libpng_autotools_file_missing=1
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fi
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done
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#
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# The cache directory doesn't matter - it will be regenerated and does not exist
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# anyway in a tarball.
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#
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# Either everything is missing or everything is there, the --maintainer option
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# just changes this so that the mode is set to generate all the files.
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mode=
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if test -z "$libpng_autotools_file_found" -o -n "$maintainer"
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then
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mode="autoreconf"
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else
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if test -n "$libpng_autotools_file_missing"
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then
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mode="broken"
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else
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mode="configure"
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fi
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fi
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#
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# So:
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case "$mode" in
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autoreconf)
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# Clean in case configure files exist
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clean_configure
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clean_autotools
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# Everything must be initialized, so use --force
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if autoreconf --warnings=all --force --install
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then
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missing=
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for file in $libpng_autotools_files
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do
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test -f "$file" || missing=1
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done
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# ignore the cache directory
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test -z "$missing" || {
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exec >&2
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echo "autoreconf was run, but did not produce all the expected"
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echo "files. It is likely that your autotools installation is"
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echo "not compatible with that expected by libpng."
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exit 1
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}
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else
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exec >&2
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echo "autoreconf failed: your version of autotools is incompatible"
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echo "with this libpng version. Please use a distributed archive"
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echo "(which includes the autotools generated files) and run configure"
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echo "instead."
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exit 1
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fi;;
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configure)
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if test -d .git
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then
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exec >&2
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echo "ERROR: running autoreconf on an initialized sytem"
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echo " This is not necessary; it is only necessary to remake the"
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echo " autotools generated files if Makefile.am or configure.ac"
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echo " change and make does the right thing with:"
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echo
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echo " ./configure --enable-maintainer-mode."
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echo
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echo " You can run autoreconf yourself if you don't like maintainer"
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echo " mode and you can also just run autoreconf -f -i to initialize"
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echo " everything in the first place; this script is only for"
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echo " compatibility with prior releases."
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exit 1
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else
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exec >&2
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echo "autogen.sh is intended only to generate 'configure' on systems"
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echo "that do not have it. You have a complete 'configure', if you"
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echo "need to change Makefile.am or configure.ac you also need to"
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echo "run configure with the --enable-maintainer-mode option."
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exit 1
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fi;;
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broken)
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exec >&2
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echo "Your system has a partial set of autotools generated files."
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echo "autogen.sh is unable to proceed. The full set of files is"
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echo "contained in the libpng 'tar' distribution archive and you do"
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echo "not need to run autogen.sh if you use it."
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exit 1;;
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esac
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