Multilib support.

This is useful when packaging for multiple target architectures.

Signed-off-by: Jan Kratochvil <jan.kratochvil@redhat.com>

Makefile.am

@@ -59,6 +59,6 @@ EXTRA_DIST = include/dwarf.h include/dwarf_i.h include/dwarf-eh.h	\
 	include/tdep-x86_64/jmpbuf.h include/tdep-x86_64/dwarf-config.h \
 	include/libunwind-ppc64.h include/tdep-ppc64/dwarf-config.h     \
 	include/tdep-ppc32/jmpbuf.h include/tdep-ppc32/libunwind_i.h	\
-	include/tdep-ppc64/jmpbuf.h include/tdep-ppc64/libunwind_i.h
+	include/tdep-ppc64/jmpbuf.h include/tdep-ppc64/libunwind_i.h	\
-
+	include/libunwind.h include/tdep/libunwind_i.h			\
-DISTCLEANFILES = include/libunwind.h include/tdep
+	include/tdep/jmpbuf.h include/tdep/dwarf-config.h

configure.in

@@ -109,8 +109,6 @@ fi
 if test x$target_arch != x$host_arch; then
   CPPFLAGS="${CPPFLAGS} -DUNW_REMOTE_ONLY"
 fi
-AC_CONFIG_LINKS(include/libunwind.h:include/libunwind-$target_arch.h
-		include/tdep:include/tdep-$target_arch)
 
 AC_ARG_ENABLE(debug,
 [  --enable-debug          turn on debug support (slows down execution)],

include/libunwind.h

@@ -0,0 +1,22 @@
+/* Provide a real file - not a symlink - as it would cause multiarch conflicts
+   when multiple different arch releases are installed simultaneously.  */
+
+#if defined __arm__
+# include "libunwind-arm.h"
+#elif defined __hppa__
+# include "libunwind-hppa.h"
+#elif defined __ia64__
+# include "libunwind-ia64.h"
+#elif defined __mips__
+# include "libunwind-mips.h"
+#elif defined __powerpc__ && !defined __powerpc64__
+# include "libunwind-ppc32.h"
+#elif defined __powerpc64__
+# include "libunwind-ppc64.h"
+#elif defined __i386__
+# include "libunwind-x86.h"
+#elif defined __x86_64__
+# include "libunwind-x86_64.h"
+#else
+# error "Unsupported arch"
+#endif

include/tdep/dwarf-config.h

@@ -0,0 +1,22 @@
+/* Provide a real file - not a symlink - as it would cause multiarch conflicts
+   when multiple different arch releases are installed simultaneously.  */
+
+#if defined __arm__
+# include "tdep-arm/dwarf-config.h"
+#elif defined __hppa__
+# include "tdep-hppa/dwarf-config.h"
+#elif defined __ia64__
+# include "tdep-ia64/dwarf-config.h"
+#elif defined __mips__
+# include "tdep-mips/dwarf-config.h"
+#elif defined __powerpc__ && !defined __powerpc64__
+# include "tdep-ppc32/dwarf-config.h"
+#elif defined __powerpc64__
+# include "tdep-ppc64/dwarf-config.h"
+#elif defined __i386__
+# include "tdep-x86/dwarf-config.h"
+#elif defined __x86_64__
+# include "tdep-x86_64/dwarf-config.h"
+#else
+# error "Unsupported arch"
+#endif

include/tdep/jmpbuf.h

@@ -0,0 +1,22 @@
+/* Provide a real file - not a symlink - as it would cause multiarch conflicts
+   when multiple different arch releases are installed simultaneously.  */
+
+#if defined __arm__
+# include "tdep-arm/jmpbuf.h"
+#elif defined __hppa__
+# include "tdep-hppa/jmpbuf.h"
+#elif defined __ia64__
+# include "tdep-ia64/jmpbuf.h"
+#elif defined __mips__
+# include "tdep-mips/jmpbuf.h"
+#elif defined __powerpc__ && !defined __powerpc64__
+# include "tdep-ppc32/jmpbuf.h"
+#elif defined __powerpc64__
+# include "tdep-ppc64/jmpbuf.h"
+#elif defined __i386__
+# include "tdep-x86/jmpbuf.h"
+#elif defined __x86_64__
+# include "tdep-x86_64/jmpbuf.h"
+#else
+# error "Unsupported arch"
+#endif

include/tdep/libunwind_i.h

@@ -0,0 +1,22 @@
+/* Provide a real file - not a symlink - as it would cause multiarch conflicts
+   when multiple different arch releases are installed simultaneously.  */
+
+#if defined __arm__
+# include "tdep-arm/libunwind_i.h"
+#elif defined __hppa__
+# include "tdep-hppa/libunwind_i.h"
+#elif defined __ia64__
+# include "tdep-ia64/libunwind_i.h"
+#elif defined __mips__
+# include "tdep-mips/libunwind_i.h"
+#elif defined __powerpc__ && !defined __powerpc64__
+# include "tdep-ppc32/libunwind_i.h"
+#elif defined __powerpc64__
+# include "tdep-ppc64/libunwind_i.h"
+#elif defined __i386__
+# include "tdep-x86/libunwind_i.h"
+#elif defined __x86_64__
+# include "tdep-x86_64/libunwind_i.h"
+#else
+# error "Unsupported arch"
+#endif