From d4cbe99effc5f4a42897b00d0f6a8dc65fccc269 Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Thu, 10 Dec 2015 19:33:16 +0000
Subject: [PATCH] Checking for availability of LIBBURN_ARCH_LIBS

---
 acinclude.m4             | 33 +++++++++++++++++++++++++++++++++
 configure.ac             |  3 +++
 xorriso/configure_ac.txt |  3 +++
 3 files changed, 39 insertions(+)

diff --git a/acinclude.m4 b/acinclude.m4
index 85a6418a..e55c36d5 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -334,4 +334,37 @@ AC_DEFUN([LIBBURNIA_TRY_TIMEZONE],
     echo "$LIBBURNIA_TIMEZONE"
 ])
 
+dnl LIBBURNIA_CHECK_ARCH_LIBS is by Thomas Schmitt, libburnia project
+dnl It tests whether the OS dependent libraries are available.
+dnl With libisoburn they are needed only for the case that indirect linking
+dnl does not work. So it is worth a try to omit them.
+dnl $1 = "mandatory" or "optional" define the action if test linking fails.
+AC_DEFUN([LIBBURNIA_CHECK_ARCH_LIBS],
+[
+    libburnia_save_LIBS="$LIBS"
+    if test "x$LIBBURN_ARCH_LIBS" = x
+    then
+      dummy=dummy
+    else
+      LIBS="$LIBS $LIBBURN_ARCH_LIBS"
+      AC_TRY_LINK([#include <stdio.h>], [printf("Hello\n");],
+                  [archlibs_test="yes"], [archlibs_test="no"])
+      LIBS="$libburnia_save_LIBS"
+      if test x$archlibs_test = xno
+      then
+        if test x"$1" = xmandatory
+        then
+          echo >&2
+          echo "FATAL: Test linking with mandatory library options failed: $LIBBURN_ARCH_LIBS" >&2
+          echo >&2
+          (exit 1); exit 1;
+        else
+          echo "disabled linking with $LIBBURN_ARCH_LIBS (because not found)"
+          LIBBURN_ARCH_LIBS=""
+        fi
+      else
+        echo "enabled  linking with $LIBBURN_ARCH_LIBS"
+      fi
+    fi
+])
 
diff --git a/configure.ac b/configure.ac
index b9561b9f..39563bce 100644
--- a/configure.ac
+++ b/configure.ac
@@ -124,6 +124,9 @@ AC_SUBST(ARCH)
 AC_SUBST(LIBBURNIA_PKGCONFDIR)
 AC_SUBST(LIBBURN_ARCH_LIBS)
 
+# Do not link libcam or libvolmgt if not available.
+# (They are indirect dependency on FreeBSD or Solaris.)
+LIBBURNIA_CHECK_ARCH_LIBS(optional)
 
 dnl Determine target directory for libisoburn-*.pc
 dnl Important: Must be performed _after_ TARGET_SHIZZLE
diff --git a/xorriso/configure_ac.txt b/xorriso/configure_ac.txt
index c214efd0..edf239c2 100644
--- a/xorriso/configure_ac.txt
+++ b/xorriso/configure_ac.txt
@@ -477,6 +477,9 @@ then
     AC_DEFINE([Libburn_read_o_direcT], [])
 fi
 
+# Check for system dependent mandatory libraries (LIBBURN_ARCH_LIBS)
+LIBBURNIA_CHECK_ARCH_LIBS(mandatory)
+
 
 # ------- Visible mark in configure : Start of library check