| #! /bin/sh |
| # |
| # 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 config.h.in~" |
| # |
| # 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 |
