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autotools: relax soname pattern for dynamic loading 

SDL makes assumption that each dynamically loaded library must have
SONAME matching pattern <libname>.so.<digit>+ hence it discards any file
that has two (or more) digits after ".so". in practice however SONAME
might be in the form of ie <libname>.so.<major>.<minor>.

as a solution keep requirement for dynamically loaded files to be named
<libname>.so.* but consider all the possibilities and prefer the shortest
one.
This commit is contained in:
Jan Palus 2022-07-10 18:02:46 +02:00 committed by Sam Lantinga
parent 6e712d2440
commit 8553632827
1 changed files with 6 additions and 1 deletions
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7
configure.ac
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@ -64,6 +64,11 @@ AC_PROG_EGREP
AC_PROG_INSTALL
AC_PROG_MAKE_SET
PKG_PROG_PKG_CONFIG
AC_PROG_AWK
if test -z "$AWK"; then
AC_MSG_ERROR([*** Required awk tool not found!])
fi
dnl 64-bit file offsets if possible unless --disable-largefile is specified
AC_SYS_LARGEFILE
@ -181,7 +186,7 @@ find_lib()
host_lib_path="/usr/$base_libdir /usr/local/$base_libdir"
fi
for path in $env_lib_path $gcc_bin_path $gcc_lib_path $host_lib_path; do
lib=[`ls -- $path/$1 2>/dev/null | sed -e '/\.so\..*\./d' -e 's,.*/,,' | sort | tail -1`]
lib=[`ls -- $path/$1 2>/dev/null | sed -e 's,.*/,,' | $AWK '{print length() " " $0;}' | sort -n -r | tail -1 | sed 's/^[0-9]\+ //'`]
if test x$lib != x; then
echo $lib
return