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Subversion libraries don't get properly versioned so the library
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names are always "libsvn_foo-1.so.0.0.0". Provide proper 
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versioning information to libtool *without* changing the soname
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for compatibility with upstream, so on-disk filenames are
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unique across different releases.
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--- subversion-1.14.2/configure.ac.soversion
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+++ subversion-1.14.2/configure.ac
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@@ -112,7 +112,12 @@
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   SVN_APR_MAJOR_VERSION=1
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 fi
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 AC_SUBST(SVN_APR_MAJOR_VERSION)
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-SVN_LT_SOVERSION="-version-info $svn_lib_ver"
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+
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+m4_define([svn_ver_minor], m4_bpatsubst(AC_PACKAGE_VERSION, [[0-9]*\.\([0-9]*\)\.[0-9]*], [\1]))
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+m4_define([svn_ver_patch], m4_bpatsubst(AC_PACKAGE_VERSION, [[0-9]*\.[0-9]*\.\([0-9]*\)], [\1]))
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+svn_ver_current="`expr $svn_lib_ver + svn_ver_minor`"
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+
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+SVN_LT_SOVERSION="-version-info $svn_ver_current:svn_ver_patch:svn_ver_minor"
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 AC_SUBST(SVN_LT_SOVERSION)
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 AC_DEFINE_UNQUOTED(SVN_SOVERSION, $svn_lib_ver,
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                    [Subversion library major verson])