Fix version numbers for v7/v8 shared libs

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@242 632fc199-4ca6-4c93-a231-07263d6284db

Makefile.am

@@ -1,5 +1,5 @@
 lib_LTLIBRARIES = libjpeg.la libturbojpeg.la
-libjpeg_la_LDFLAGS = -version-number ${JPEG_LIB_VERSION}:0:0 -no-undefined
+libjpeg_la_LDFLAGS = -version-info ${JPEG_LIB_VERSION} -no-undefined
 libturbojpeg_la_LDFLAGS = -avoid-version -no-undefined
 include_HEADERS = jerror.h jmorecfg.h jpeglib.h turbojpeg.h
 nodist_include_HEADERS = jconfig.h

configure.ac

@@ -135,20 +135,23 @@ AC_ARG_WITH([jpeg7],
     AC_HELP_STRING([--with-jpeg7], [Emulate libjpeg v7 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
 AC_ARG_WITH([jpeg8],
     AC_HELP_STRING([--with-jpeg8], [Emulate libjpeg v8b API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b.)]))
+AC_MSG_CHECKING([libjpeg version number])
 if test "x${with_jpeg8}" == "xyes"; then
     JPEG_LIB_VERSION=80
     AC_DEFINE([JPEG_LIB_VERSION], [80], [Version 8.0])
-    AC_MSG_NOTICE([libjpeg v8b API/ABI emulation enabled])
+    [JPEG_LIB_VERSION="`expr $JPEG_LIB_VERSION / 10`:2"]
 else
     if test "x${with_jpeg7}" == "xyes"; then
         JPEG_LIB_VERSION=70
         AC_DEFINE([JPEG_LIB_VERSION], [70], [Version 7.0])
-        AC_MSG_NOTICE([libjpeg v7 API/ABI emulation enabled])
+        [JPEG_LIB_VERSION="`expr $JPEG_LIB_VERSION / 10`:`expr $JPEG_LIB_VERSION % 10`"]
     else
         JPEG_LIB_VERSION=62
         AC_DEFINE([JPEG_LIB_VERSION], [62], [Version 6b])
+        [JPEG_LIB_VERSION="$JPEG_LIB_VERSION:0:0"]
     fi
 fi
+AC_MSG_RESULT([$JPEG_LIB_VERSION])
 AC_SUBST(JPEG_LIB_VERSION)
 
 # SIMD is optional