[libxslt] configure.ac: Conditionally determine whether xml2-config should pass shared libraries or static lib

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 3028eaeae9d139074824a719bcb35733958a4f5c
Author: Hugh McMaster <hugh mcmaster outlook com>
Date:   Thu Aug 1 20:49:43 2019 +1000

    configure.ac: Conditionally determine whether xml2-config should pass shared libraries or static libraries

 configure.ac | 73 ++++++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 49 insertions(+), 24 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3e28813a..b55ccb49 100644
--- a/configure.ac
+++ b/configure.ac
@@ -485,24 +485,45 @@ else
     esac
 fi
 
+dnl
+dnl Check which type of library to build. Default to building shared and static.
+dnl
+
+build_shared_libs="yes"
+build_static_libs="yes"
+
+if test "$enable_shared" = "no"; then
+    build_shared_libs="no"
+fi
+
+if test "$enable_static" = "no"; then
+    build_static_libs="no"
+fi
+
+if test "$build_shared_libs" = "no" -a "$build_static_libs" = "no"; then
+    build_static_libs="yes"
+fi
+
 dnl
 dnl Override other variables if LIBXML_SRC is set
 dnl
 
-if test "x$LIBXML_SRC" != "x"
-then
-       CWD=`pwd`
-       if cd $LIBXML_SRC
-       then
-               LIBXML_SRC=`pwd`
-               XML_CONFIG="${LIBXML_SRC}/xml2-config"
-               LIBXML_CFLAGS="-I${LIBXML_SRC}/include"
-               LIBXML_LIBS="-L${LIBXML_SRC} `$XML_CONFIG --libs`"
-                WITH_MODULES="`$XML_CONFIG --modules`"
-               cd $CWD
-       else
-               AC_MSG_ERROR([libxml source dir not found (${LIBXML_SRC}), typo?])
-       fi
+if test "x$LIBXML_SRC" != "x"; then
+    CWD=`pwd`
+    if cd $LIBXML_SRC; then
+        LIBXML_SRC=`pwd`
+        XML_CONFIG="${LIBXML_SRC}/xml2-config"
+        LIBXML_CFLAGS="-I${LIBXML_SRC}/include"
+        if test "$build_static_libs" = "no"; then
+            LIBXML_LIBS="-L${LIBXML_SRC} `$XML_CONFIG --libs --dynamic`"
+        else
+            LIBXML_LIBS="-L${LIBXML_SRC} `$XML_CONFIG --libs`"
+        fi
+        WITH_MODULES="`$XML_CONFIG --modules`"
+        cd $CWD
+    else
+        AC_MSG_ERROR([libxml source dir not found (${LIBXML_SRC}), typo?])
+    fi
 fi
 
 dnl
@@ -523,15 +544,19 @@ dnl
 
 if test "x$LIBXML_LIBS" = "x" && ${XML_CONFIG} --libs print > /dev/null 2>&1
 then
-        AC_MSG_CHECKING(for libxml libraries >= $LIBXML_REQUIRED_VERSION)
-       XMLVERS=`$XML_CONFIG --version`
-       if test VERSION_TO_NUMBER(echo $XMLVERS) -ge VERSION_TO_NUMBER(echo $LIBXML_REQUIRED_VERSION)
-       then
-               AC_MSG_RESULT($XMLVERS found)
-       else
-               AC_MSG_ERROR(Version $XMLVERS found. You need at least libxml2 $LIBXML_REQUIRED_VERSION for 
this version of libxslt)
-       fi
-       LIBXML_LIBS="`$XML_CONFIG --libs`"
+    AC_MSG_CHECKING(for libxml libraries >= $LIBXML_REQUIRED_VERSION)
+    XMLVERS=`$XML_CONFIG --version`
+    if test VERSION_TO_NUMBER(echo $XMLVERS) -ge VERSION_TO_NUMBER(echo $LIBXML_REQUIRED_VERSION); then
+        AC_MSG_RESULT($XMLVERS found)
+    else
+        AC_MSG_ERROR(Version $XMLVERS found. You need at least libxml2 $LIBXML_REQUIRED_VERSION for this 
version of libxslt)
+    fi
+
+    if test "$build_static_libs" = "no"; then
+        LIBXML_LIBS="`$XML_CONFIG --libs --dynamic`"
+    else
+        LIBXML_LIBS="`$XML_CONFIG --libs`"
+    fi
        LIBXML_CFLAGS="`$XML_CONFIG --cflags`"
         WITH_MODULES="`$XML_CONFIG --modules`"
 fi
@@ -554,7 +579,7 @@ then
 fi
 
 AC_MSG_CHECKING([whether shared libraries will be built (required for plugins)])
-if test "$enable_shared" = "no" -a "$with_plugins" = "yes"; then
+if test "$build_shared_libs" = "no" -a "$with_plugins" = "yes"; then
         AC_MSG_RESULT(no)
         AC_MSG_WARN([Disabling plugin support.])
         AC_MSG_WARN([Plugins require that shared libraries be built.])