[96425] | 1 | #! /bin/sh
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| 2 | #
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| 3 | # Run 'autoreconf' to build 'configure', 'Makefile.in' and other configure
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| 4 | # control files.
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| 5 | #
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| 6 | # The first time this is run on a GIT checkout the only files that exist are
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| 7 | # configure.ac and Makefile.am; all of the autotools support scripts are
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| 8 | # missing. They are instantiated with autoreconf --force --install.
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| 9 | #
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| 10 | # For regular ("tarball") distributions all the files should exist. We do not
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| 11 | # want them to be updated *under any circumstances*. It should never be
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| 12 | # necessary to run autogen.sh because ./configure --enable-maintainer-mode says
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| 13 | # what to do if Makefile.am or configure.ac are changed.
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| 14 | #
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| 15 | # It is *probably* OK to update the files on a GIT checkout, because they have
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| 16 | # come from the local tools, but leave that to the user who is assumed to know
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| 17 | # whether it is ok or required.
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| 18 | #
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| 19 | # This script is intended to work without arguments, there are, however, hidden
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| 20 | # arguments (a) for use while testing the script and (b) to fix up systems that
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| 21 | # have been broken. If (b) is required the script prompts for the correct
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| 22 | # options. For this reason the options are *NOT* documented in the help; this
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| 23 | # is deliberate; UTSL.
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| 24 | #
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| 25 | clean=
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| 26 | maintainer=
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| 27 | while test $# -gt 0
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| 28 | do
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| 29 | case "$1" in
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| 30 | --maintainer)
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| 31 | maintainer=1;;
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| 32 |
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| 33 | --clean)
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| 34 | clean=1;;
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| 35 |
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| 36 | *)
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| 37 | exec >&2
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| 38 | echo "$0: usage: ./autogen.sh"
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| 39 | if test -d .git
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| 40 | then
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| 41 | echo " ./autogen.sh generates the configure script and"
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| 42 | echo " Makefile.in, or refreshes them after changes to Makefile.am"
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| 43 | echo " or configure.ac. You may prefer to just run autoreconf."
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| 44 | elif test -z "$maintainer"
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| 45 | then
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| 46 | echo " DO NOT RUN THIS SCRIPT."
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| 47 | echo " If you need to change Makefile.am or configure.ac then you"
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| 48 | echo " also need to run ./configure --enable-maintainer-mode and"
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| 49 | echo " use the appropriate autotools, *NOT* this script, to update"
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| 50 | echo " everything, please check the documentation of autoreconf."
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| 51 | echo " WARNING: libpng is intentionally generated with a known,"
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| 52 | echo " fixed, set of autotools. It is known *NOT* to work with"
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| 53 | echo " the collection of autotools distributed on highly reputable"
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| 54 | echo " operating systems."
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| 55 | echo " Remember: autotools is GNU software, you are expected to"
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| 56 | echo " pay for support."
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| 57 | else
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| 58 | echo " You have run autogen.sh with --maintainer enabled and you"
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| 59 | echo " are not using a GIT distribution, then you have given an"
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| 60 | echo " unrecognized argument. This is not good. --maintainer"
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| 61 | echo " switches off any assumptions that you might not know what"
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| 62 | echo " you are doing."
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| 63 | fi
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| 64 | exit 1;;
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| 65 | esac
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| 66 |
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| 67 | shift
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| 68 | done
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| 69 | #
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| 70 | # First check for a set of the autotools files; if absent then this is assumed
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| 71 | # to be a GIT version and the local autotools must be used. If present this
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| 72 | # is a tarball distribution and the script should not be used. If partially
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| 73 | # present bad things are happening.
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| 74 | #
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| 75 | # The autotools generated files:
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| 76 | libpng_autotools_files="Makefile.in aclocal.m4 config.guess config.h.in
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| 77 | config.sub configure depcomp install-sh ltmain.sh missing\
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| 78 | test-driver"
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| 79 | #
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[103316] | 80 | # Files generated by versions of autoconf >2.68 or automake >1.13 (i.e. later
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[96425] | 81 | # versions than those required by configure.ac):
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| 82 | libpng_autotools_extra="compile config.h.in~"
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| 83 | #
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| 84 | # These are separate because 'maintainer-clean' does not remove them.
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[103316] | 85 | libpng_libtool_files="scripts/autoconf/libtool.m4 scripts/autoconf/ltoptions.m4\
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| 86 | scripts/autoconf/ltsugar.m4 scripts/autoconf/ltversion.m4\
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| 87 | scripts/autoconf/lt~obsolete.m4"
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[96425] | 88 |
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| 89 | libpng_autotools_dirs="autom4te.cache" # not required
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| 90 | #
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| 91 | # The configure generated files:
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| 92 | libpng_configure_files="Makefile config.h config.log config.status\
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| 93 | libpng-config libpng.pc libtool stamp-h1"
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| 94 |
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| 95 | libpng_configure_dirs=".deps"
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| 96 | #
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| 97 | # We must remove the configure generated files as well as the autotools
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| 98 | # generated files if autotools are regenerated because otherwise if configure
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| 99 | # has been run without "--enable-maintainer-mode" make can do a partial update
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| 100 | # of Makefile. These functions do the two bits of cleaning.
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| 101 | clean_autotools(){
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| 102 | rm -rf $libpng_autotools_files $libpng_libtool_files $libpng_autotools_dirs
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| 103 | rm -rf $libpng_autotools_extra
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| 104 | }
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| 105 |
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| 106 | clean_configure(){
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| 107 | rm -rf $libpng_configure_files $libpng_configure_dirs
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| 108 | }
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| 109 | #
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| 110 | # Clean: remove everything (this is to help with testing)
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| 111 | if test -n "$clean"
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| 112 | then
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| 113 | clean_configure
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| 114 | if test -n "$maintainer"
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| 115 | then
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| 116 | clean_autotools
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| 117 | fi
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| 118 |
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| 119 | exit 0
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| 120 | fi
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| 121 | #
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| 122 | # Validate the distribution.
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| 123 | libpng_autotools_file_found=
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| 124 | libpng_autotools_file_missing=
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| 125 | for file in $libpng_autotools_files
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| 126 | do
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| 127 | if test -f "$file"
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| 128 | then
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| 129 | libpng_autotools_file_found=1
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| 130 | else
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| 131 | libpng_autotools_file_missing=1
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| 132 | fi
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| 133 | done
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| 134 | #
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| 135 | # Presence of one of these does not *invalidate* missing, but absence
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| 136 | # invalidates found.
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| 137 | for file in $libpng_libtool_files
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| 138 | do
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| 139 | if test ! -f "$file"
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| 140 | then
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| 141 | libpng_autotools_file_missing=1
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| 142 | fi
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| 143 | done
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| 144 | #
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| 145 | # The cache directory doesn't matter - it will be regenerated and does not exist
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| 146 | # anyway in a tarball.
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| 147 | #
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| 148 | # Either everything is missing or everything is there, the --maintainer option
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| 149 | # just changes this so that the mode is set to generate all the files.
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| 150 | mode=
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| 151 | if test -z "$libpng_autotools_file_found" -o -n "$maintainer"
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| 152 | then
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| 153 | mode="autoreconf"
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| 154 | else
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| 155 | if test -n "$libpng_autotools_file_missing"
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| 156 | then
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| 157 | mode="broken"
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| 158 | else
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| 159 | mode="configure"
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| 160 | fi
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| 161 | fi
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| 162 | #
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| 163 | # So:
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| 164 | case "$mode" in
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| 165 | autoreconf)
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| 166 | # Clean in case configure files exist
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| 167 | clean_configure
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| 168 | clean_autotools
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| 169 | # Everything must be initialized, so use --force
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| 170 | if autoreconf --warnings=all --force --install
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| 171 | then
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| 172 | missing=
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| 173 | for file in $libpng_autotools_files
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| 174 | do
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| 175 | test -f "$file" || missing=1
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| 176 | done
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| 177 | # ignore the cache directory
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| 178 | test -z "$missing" || {
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| 179 | exec >&2
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| 180 | echo "autoreconf was run, but did not produce all the expected"
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| 181 | echo "files. It is likely that your autotools installation is"
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| 182 | echo "not compatible with that expected by libpng."
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| 183 | exit 1
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| 184 | }
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| 185 | else
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| 186 | exec >&2
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| 187 | echo "autoreconf failed: your version of autotools is incompatible"
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| 188 | echo "with this libpng version. Please use a distributed archive"
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| 189 | echo "(which includes the autotools generated files) and run configure"
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| 190 | echo "instead."
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| 191 | exit 1
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| 192 | fi;;
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| 193 |
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| 194 | configure)
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| 195 | if test -d .git
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| 196 | then
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| 197 | exec >&2
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| 198 | echo "ERROR: running autoreconf on an initialized system"
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| 199 | echo " This is not necessary; it is only necessary to remake the"
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| 200 | echo " autotools generated files if Makefile.am or configure.ac"
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| 201 | echo " change and make does the right thing with:"
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| 202 | echo
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| 203 | echo " ./configure --enable-maintainer-mode."
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| 204 | echo
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| 205 | echo " You can run autoreconf yourself if you don't like maintainer"
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| 206 | echo " mode and you can also just run autoreconf -f -i to initialize"
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| 207 | echo " everything in the first place; this script is only for"
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| 208 | echo " compatibility with prior releases."
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| 209 | exit 1
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| 210 | else
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| 211 | exec >&2
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| 212 | echo "autogen.sh is intended only to generate 'configure' on systems"
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| 213 | echo "that do not have it. You have a complete 'configure', if you"
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| 214 | echo "need to change Makefile.am or configure.ac you also need to"
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| 215 | echo "run configure with the --enable-maintainer-mode option."
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| 216 | exit 1
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| 217 | fi;;
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| 218 |
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| 219 | broken)
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| 220 | exec >&2
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| 221 | echo "Your system has a partial set of autotools generated files."
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| 222 | echo "autogen.sh is unable to proceed. The full set of files is"
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| 223 | echo "contained in the libpng 'tar' distribution archive and you do"
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| 224 | echo "not need to run autogen.sh if you use it."
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| 225 | exit 1;;
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| 226 | esac
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