The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 1 | #! /bin/sh |
The Android Open Source Project | 893912b | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 2 | # |
Chris Craik | b50c217 | 2013-07-29 15:28:30 -0700 | [diff] [blame^] | 3 | # Run 'autoreconf' to build 'configure', 'Makefile.in' and other configure |
| 4 | # control files. |
| 5 | # |
| 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. |
| 9 | # |
| 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. |
| 14 | # |
| 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. |
| 18 | # |
| 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. |
| 24 | # |
| 25 | clean= |
| 26 | maintainer= |
| 27 | while test $# -gt 0 |
| 28 | do |
| 29 | case "$1" in |
| 30 | --maintainer) |
| 31 | maintainer=1;; |
| 32 | |
| 33 | --clean) |
| 34 | clean=1;; |
| 35 | |
| 36 | *) |
| 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." |
| 63 | fi |
| 64 | exit 1;; |
| 65 | esac |
| 66 | |
| 67 | shift |
| 68 | done |
| 69 | # |
| 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. |
| 74 | # |
| 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" |
| 78 | # |
| 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" |
| 82 | |
| 83 | libpng_autotools_dirs="autom4te.cache" # not required |
| 84 | # |
| 85 | # The configure generated files: |
| 86 | libpng_configure_files="Makefile config.h config.log config.status\ |
| 87 | libpng-config libpng.pc libtool stamp-h1" |
| 88 | |
| 89 | libpng_configure_dirs=".deps" |
| 90 | # |
| 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 |
| 97 | } |
| 98 | |
| 99 | clean_configure(){ |
| 100 | rm -rf $libpng_configure_files $libpng_configure_dirs |
| 101 | } |
| 102 | # |
| 103 | # Clean: remove everything (this is to help with testing) |
| 104 | if test -n "$clean" |
| 105 | then |
| 106 | clean_configure |
| 107 | if test -n "$maintainer" |
| 108 | then |
| 109 | clean_autotools |
| 110 | fi |
| 111 | |
| 112 | exit 0 |
| 113 | fi |
| 114 | # |
| 115 | # Validate the distribution. |
| 116 | libpng_autotools_file_found= |
| 117 | libpng_autotools_file_missing= |
| 118 | for file in $libpng_autotools_files |
| 119 | do |
| 120 | if test -f "$file" |
| 121 | then |
| 122 | libpng_autotools_file_found=1 |
| 123 | else |
| 124 | libpng_autotools_file_missing=1 |
| 125 | fi |
| 126 | done |
| 127 | # |
| 128 | # Presence of one of these does not *invalidate* missing, but absence |
| 129 | # invalidates found. |
| 130 | for file in $libpng_libtool_files |
| 131 | do |
| 132 | if test ! -f "$file" |
| 133 | then |
| 134 | libpng_autotools_file_missing=1 |
| 135 | fi |
| 136 | done |
| 137 | # |
| 138 | # The cache directory doesn't matter - it will be regenerated and does not exist |
| 139 | # anyway in a tarball. |
| 140 | # |
| 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 "$libpng_autotools_file_missing" |
| 149 | then |
| 150 | mode="broken" |
| 151 | else |
| 152 | mode="configure" |
| 153 | fi |
| 154 | fi |
| 155 | # |
| 156 | # So: |
| 157 | case "$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 $libpng_autotools_files |
| 167 | do |
| 168 | test -f "$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 |
| 177 | } |
| 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;; |
| 186 | |
| 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;; |
| 211 | |
| 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 |