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225 lines
7.8 KiB
225 lines
7.8 KiB
#! /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 system" |
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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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