Check for SYS/GL during library init. Reason is that
[AROS.git] / workbench / libs / png / autogen.sh
blobdecf0f56f8b7704e860dd2f881a79ca245673903
1 #! /bin/sh
3 # Run 'autoreconf' to build 'configure', 'Makefile.in' and other configure
4 # control files.
6 # The first time this is run on a GIT checkout the only files that exist are
7 # configure.ac and Makefile.am; all of the autotools support scripts are
8 # missing. They are instantiated with autoreconf --force --install.
10 # For regular ("tarball") distributions all the files should exist. We do not
11 # want them to be updated *under any circumstances*. It should never be
12 # necessary to rune autogen.sh because ./configure --enable-maintainer-mode says
13 # what to do if Makeile.am or configure.ac are changed.
15 # It is *probably* OK to update the files on a GIT checkout, because they have
16 # come from the local tools, but leave that to the user who is assumed to know
17 # whether it is ok or required.
19 # This script is intended to work without arguments, there are, however, hidden
20 # arguments for (a) use while testing the script and (b) to fix up systems that
21 # have been broken. If (b) is required the script prompts for the correct
22 # options. For this reason the options are *NOT* documented in the help; this
23 # is deliberate; UTSL.
25 clean=
26 maintainer=
27 while test $# -gt 0
29 case "$1" in
30 --maintainer)
31 maintainer=1;;
33 --clean)
34 clean=1;;
37 exec >&2
38 echo "$0: usage: ./autogen.sh"
39 if test -d .git
40 then
41 echo " ./autogen.sh generates the configure script and"
42 echo " Makefile.in, or refreshes them after changes to Makefile.am"
43 echo " or configure.ac. You may prefer to just run autoreconf."
44 elif test -z "$maintainer"
45 then
46 echo " DO NOT RUN THIS SCRIPT."
47 echo " If you need to change Makefile.am or configure.ac then you"
48 echo " also need to run ./configure --enable-maintainer-mode and"
49 echo " use the appropriate autotools, *NOT* this script, to update"
50 echo " everything, please check the documentation of autoreconf."
51 echo " WARNING: libpng is intentionally generated with a known,"
52 echo " fixed, set of autotools. It is known *NOT* to work with"
53 echo " the collection of autotools distributed on highly reputable"
54 echo " operating systems."
55 echo " Remember: autotools is GNU software, you are expected to"
56 echo " pay for support."
57 else
58 echo " You have run autogen.sh with --maintainer enabled and you"
59 echo " are not using a GIT distribution, then you have given an"
60 echo " unrecognized argument. This is not good. --maintainer"
61 echo " switches off any assumptions that you might not know what"
62 echo " you are doing."
64 exit 1;;
65 esac
67 shift
68 done
70 # First check for a set of the autotools files; if absent then this is assumed
71 # to be a GIT version and the local autotools must be used. If present this
72 # is a tarball distribution and the script should not be used. If partially
73 # present bad things are happening.
75 # The autotools generated files:
76 libpng_autotools_files="Makefile.in aclocal.m4 config.guess config.h.in\
77 config.sub configure depcomp install-sh ltmain.sh missing test-driver"
79 # These are separate because 'maintainer-clean' does not remove them.
80 libpng_libtool_files="scripts/libtool.m4 scripts/ltoptions.m4\
81 scripts/ltsugar.m4 scripts/ltversion.m4 scripts/lt~obsolete.m4"
83 libpng_autotools_dirs="autom4te.cache" # not required
85 # The configure generated files:
86 libpng_configure_files="Makefile config.h config.log config.status\
87 libpng-config libpng.pc libtool stamp-h1"
89 libpng_configure_dirs=".deps"
91 # We must remove the configure generated files as well as the autotools
92 # generated files if autotools are regenerated because otherwise if configure
93 # has been run without "--enable-maintainer-mode" make can do a partial update
94 # of Makefile. These functions do the two bits of cleaning.
95 clean_autotools(){
96 rm -rf $libpng_autotools_files $libpng_libtool_files $libpng_autotools_dirs
99 clean_configure(){
100 rm -rf $libpng_configure_files $libpng_configure_dirs
103 # Clean: remove everything (this is to help with testing)
104 if test -n "$clean"
105 then
106 clean_configure
107 if test -n "$maintainer"
108 then
109 clean_autotools
112 exit 0
115 # Validate the distribution.
116 libpng_autotools_file_found=
117 libpng_autotools_file_missing=
118 for file in $libpng_autotools_files
120 if test -f "$file"
121 then
122 libpng_autotools_file_found=1
123 else
124 libpng_autotools_file_missing=1
126 done
128 # Presence of one of these does not *invalidate* missing, but absence
129 # invalidates found.
130 for file in $libpng_libtool_files
132 if test ! -f "$file"
133 then
134 libpng_autotools_file_missing=1
136 done
138 # The cache directory doesn't matter - it will be regenerated and does not exist
139 # anyway in a tarball.
141 # Either everything is missing or everything is there, the --maintainer option
142 # just changes this so that the mode is set to generate all the files.
143 mode=
144 if test -z "$libpng_autotools_file_found" -o -n "$maintainer"
145 then
146 mode="autoreconf"
147 else
148 if test -n "$libpng_autotools_file_missing"
149 then
150 mode="broken"
151 else
152 mode="configure"
156 # So:
157 case "$mode" in
158 autoreconf)
159 # Clean in case configure files exist
160 clean_configure
161 clean_autotools
162 # Everything must be initialized, so use --force
163 if autoreconf --warnings=all --force --install
164 then
165 missing=
166 for file in $libpng_autotools_files
168 test -f "$file" || missing=1
169 done
170 # ignore the cache directory
171 test -z "$missing" || {
172 exec >&2
173 echo "autoreconf was run, but did not produce all the expected"
174 echo "files. It is likely that your autotools installation is"
175 echo "not compatible with that expected by libpng."
176 exit 1
178 else
179 exec >&2
180 echo "autoreconf failed: your version of autotools is incompatible"
181 echo "with this libpng version. Please use a distributed archive"
182 echo "(which includes the autotools generated files) and run configure"
183 echo "instead."
184 exit 1
185 fi;;
187 configure)
188 if test -d .git
189 then
190 exec >&2
191 echo "ERROR: running autoreconf on an initialized sytem"
192 echo " This is not necessary; it is only necessary to remake the"
193 echo " autotools generated files if Makefile.am or configure.ac"
194 echo " change and make does the right thing with:"
195 echo
196 echo " ./configure --enable-maintainer-mode."
197 echo
198 echo " You can run autoreconf yourself if you don't like maintainer"
199 echo " mode and you can also just run autoreconf -f -i to initialize"
200 echo " everything in the first place; this script is only for"
201 echo " compatiblity with prior releases."
202 exit 1
203 else
204 exec >&2
205 echo "autogen.sh is intended only to generate 'configure' on systems"
206 echo "that do not have it. You have a complete 'configure', if you"
207 echo "need to change Makefile.am or configure.ac you also need to"
208 echo "run configure with the --enable-maintainer-mode option."
209 exit 1
210 fi;;
212 broken)
213 exec >&2
214 echo "Your system has a partial set of autotools generated files."
215 echo "autogen.sh is unable to proceed. The full set of files is"
216 echo "contained in the libpng 'tar' distribution archive and you do"
217 echo "not need to run autogen.sh if you use it."
218 exit 1;;
219 esac