Issue SimonKagstrom#83: build: Look for bintuils to make it optional

cmake/FindBfd.cmake

@@ -0,0 +1,85 @@
+# - Try to find libbfd
+# Once done this will define
+#
+#  LIBBFD_FOUND - system has libbfd
+#  LIBBFD_INCLUDE_DIRS - the libbfd include directory
+#  LIBBFD_LIBRARIES - Link these to use libbfd
+#  LIBBFD_DEFINITIONS - Compiler switches required for using libbfd
+#
+# Based on:
+#
+#  Copyright (c) 2008 Bernhard Walle <[email protected]>
+#
+#  Redistribution and use is allowed according to the terms of the New
+#  BSD license.
+#  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+
+
+if (LIBBFD_LIBRARIES AND LIBBFD_INCLUDE_DIRS)
+  set (LIBBFD_FIND_QUIETLY TRUE)
+endif (LIBBFD_LIBRARIES AND LIBBFD_INCLUDE_DIRS)
+
+find_path (LIBBFD_INCLUDE_DIRS
+    NAMES
+      bfd.h
+      dis-asm.h
+    PATHS
+      /usr/include
+      /usr/local/include
+      /opt/local/include
+      /opt/include
+      ENV CPATH)
+
+# Ugly, yes ugly...
+find_library (LIBBFD_BFD_LIBRARY
+    NAMES
+      bfd
+    PATHS
+      /usr/lib
+      /usr/lib64
+      /usr/local/lib
+      /usr/local/lib64
+      /opt/local/lib
+      /opt/usr/lib64
+      ENV LIBRARY_PATH
+      ENV LD_LIBRARY_PATH)
+
+find_library (LIBBFD_IBERTY_LIBRARY
+    NAMES
+      iberty
+    PATHS
+      /usr/lib
+      /usr/lib64
+      /usr/local/lib
+      /usr/local/lib64
+      /opt/local/lib
+      /opt/usr/lib64
+      ENV LIBRARY_PATH
+      ENV LD_LIBRARY_PATH)
+
+find_library (LIBBFD_OPCODES_LIBRARY
+    NAMES
+      opcodes
+    PATHS
+      /usr/lib
+      /usr/lib64
+      /usr/local/lib
+      /usr/local/lib64
+      /opt/local/lib
+      /opt/usr/lib64
+      ENV LIBRARY_PATH
+      ENV LD_LIBRARY_PATH)
+
+
+include (FindPackageHandleStandardArgs)
+
+
+# handle the QUIETLY and REQUIRED arguments and set LIBBFD_FOUND to TRUE if all listed variables are TRUE
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LIBBFD DEFAULT_MSG
+    LIBBFD_BFD_LIBRARY
+    LIBBFD_IBERTY_LIBRARY
+    LIBBFD_OPCODES_LIBRARY
+    LIBBFD_INCLUDE_DIRS)
+
+mark_as_advanced(LIBBFD_INCLUDE_DIRS LIBBFD_LIBRARIES)

src/CMakeLists.txt

@@ -5,6 +5,7 @@ set (CMAKE_MODULE_PATH  ${CMAKE_MODULE_PATH}
                         ${CMAKE_CURRENT_SOURCE_DIR}/../../cmake)
 find_package (LibElf REQUIRED)
 find_package (Elfutils REQUIRED)
+find_package (Bfd)
 
 include(TargetArch)
 target_architecture(CMAKE_TARGET_ARCHITECTURES)
@@ -32,14 +33,16 @@ set (ADDRESS_VERIFIER_SRCS
 )
 
 if("${CMAKE_TARGET_ARCHITECTURES}" STREQUAL "i386" OR "${CMAKE_TARGET_ARCHITECTURES}" STREQUAL "x86_64")
-	set (ADDRESS_VERIFIER_SRCS
-		parsers/bfd-address-verifier.cc
-	)
-	set (ADDRESS_VERIFIER_LIBRARIES
-		bfd
-		iberty
-		opcodes
-	)
+	if(LIBBFD_FOUND)
+		set (ADDRESS_VERIFIER_SRCS
+			parsers/bfd-address-verifier.cc
+		)
+		set (ADDRESS_VERIFIER_LIBRARIES
+			${LIBBFD_BFD_LIBRARY}
+			${LIBBFD_IBERTY_LIBRARY}
+			${LIBBFD_OPCODES_LIBRARY}
+		)
+	endif()
 endif()
 
 set (LINUX_SRCS