diff --git a/CMakeLists.txt b/CMakeLists.txt
index 86d76fa..2090ece 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -159,6 +159,11 @@ if (READLINE_FOUND)
 	set(HAVE_READLINE_HISTORY_H 1)
 endif()
 
+find_package(LibDL)
+if (LIBDL_FOUND)
+    set(HAVE_LIBDL 1)
+endif()
+
 find_program(MAKEINFO makeinfo)
 find_program(FIG2DEV fig2dev)
 
diff --git a/cmake/modules/FindLibDL.cmake b/cmake/modules/FindLibDL.cmake
new file mode 100644
index 0000000..7aee0cd
--- /dev/null
+++ b/cmake/modules/FindLibDL.cmake
@@ -0,0 +1,30 @@
+# - Find libdl
+# Find the native LIBDL includes and library
+#
+#  LIBDL_INCLUDE_DIR - where to find dlfcn.h, etc.
+#  LIBDL_LIBRARIES   - List of libraries when using libdl.
+#  LIBDL_FOUND       - True if libdl found.
+
+
+IF (LIBDL_INCLUDE_DIR)
+  # Already in cache, be silent
+  SET(LIBDL_FIND_QUIETLY TRUE)
+ENDIF (LIBDL_INCLUDE_DIR)
+
+FIND_PATH(LIBDL_INCLUDE_DIR dlfcn.h)
+
+SET(LIBDL_NAMES dl libdl ltdl libltdl)
+FIND_LIBRARY(LIBDL_LIBRARY NAMES ${LIBDL_NAMES} )
+
+# handle the QUIETLY and REQUIRED arguments and set LIBDL_FOUND to TRUE if
+# all listed variables are TRUE
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibDL DEFAULT_MSG LIBDL_LIBRARY LIBDL_INCLUDE_DIR)
+
+IF(LIBDL_FOUND)
+  SET( LIBDL_LIBRARIES ${LIBDL_LIBRARY} )
+ELSE(LIBDL_FOUND)
+  SET( LIBDL_LIBRARIES )
+ENDIF(LIBDL_FOUND)
+
+MARK_AS_ADVANCED( LIBDL_LIBRARY LIBDL_INCLUDE_DIR )
diff --git a/config.cmake.in b/config.cmake.in
index 73fca28..b2589ee 100644
--- a/config.cmake.in
+++ b/config.cmake.in
@@ -3,3 +3,4 @@
 #cmakedefine HAVE_LIBREADLINE
 #cmakedefine HAVE_READLINE_READLINE_H
 #cmakedefine HAVE_READLINE_HISTORY_H
+#cmakedefine HAVE_LIBDL
diff --git a/excompiler.patch b/excompiler.patch
new file mode 100644
index 0000000..81f2814
--- /dev/null
+++ b/excompiler.patch
@@ -0,0 +1,85 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 86d76fa..2090ece 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -159,6 +159,11 @@ if (READLINE_FOUND)
+ 	set(HAVE_READLINE_HISTORY_H 1)
+ endif()
+ 
++find_package(LibDL)
++if (LIBDL_FOUND)
++    set(HAVE_LIBDL 1)
++endif()
++
+ find_program(MAKEINFO makeinfo)
+ find_program(FIG2DEV fig2dev)
+ 
+diff --git a/cmake/modules/FindLibDL.cmake b/cmake/modules/FindLibDL.cmake
+new file mode 100644
+index 0000000..7aee0cd
+--- /dev/null
++++ b/cmake/modules/FindLibDL.cmake
+@@ -0,0 +1,30 @@
++# - Find libdl
++# Find the native LIBDL includes and library
++#
++#  LIBDL_INCLUDE_DIR - where to find dlfcn.h, etc.
++#  LIBDL_LIBRARIES   - List of libraries when using libdl.
++#  LIBDL_FOUND       - True if libdl found.
++
++
++IF (LIBDL_INCLUDE_DIR)
++  # Already in cache, be silent
++  SET(LIBDL_FIND_QUIETLY TRUE)
++ENDIF (LIBDL_INCLUDE_DIR)
++
++FIND_PATH(LIBDL_INCLUDE_DIR dlfcn.h)
++
++SET(LIBDL_NAMES dl libdl ltdl libltdl)
++FIND_LIBRARY(LIBDL_LIBRARY NAMES ${LIBDL_NAMES} )
++
++# handle the QUIETLY and REQUIRED arguments and set LIBDL_FOUND to TRUE if
++# all listed variables are TRUE
++INCLUDE(FindPackageHandleStandardArgs)
++FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibDL DEFAULT_MSG LIBDL_LIBRARY LIBDL_INCLUDE_DIR)
++
++IF(LIBDL_FOUND)
++  SET( LIBDL_LIBRARIES ${LIBDL_LIBRARY} )
++ELSE(LIBDL_FOUND)
++  SET( LIBDL_LIBRARIES )
++ENDIF(LIBDL_FOUND)
++
++MARK_AS_ADVANCED( LIBDL_LIBRARY LIBDL_INCLUDE_DIR )
+diff --git a/config.cmake.in b/config.cmake.in
+index 73fca28..b2589ee 100644
+--- a/config.cmake.in
++++ b/config.cmake.in
+@@ -3,3 +3,4 @@
+ #cmakedefine HAVE_LIBREADLINE
+ #cmakedefine HAVE_READLINE_READLINE_H
+ #cmakedefine HAVE_READLINE_HISTORY_H
++#cmakedefine HAVE_LIBDL
+diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
+index 8ad8a07..b0628ee 100644
+--- a/tools/CMakeLists.txt
++++ b/tools/CMakeLists.txt
+@@ -4,4 +4,11 @@ add_definitions(-DIN_GINAC)
+ add_executable(viewgar viewgar.cpp)
+ target_link_libraries(viewgar ginac)
+ install(TARGETS viewgar RUNTIME DESTINATION "${BIN_INSTALL_DIR}")
++set (CC gcc)
+ 
++configure_file (
++    "${CMAKE_CURRENT_SOURCE_DIR}/ginac-excompiler.in"
++    "${CMAKE_CURRENT_BINARY_DIR}/ginac-excompiler"
++)
++
++install(PROGRAMS ginac-excompiler DESTINATION "${BIN_INSTALL_DIR}")
+diff --git a/tools/ginac-excompiler.in b/tools/ginac-excompiler.in
+index 0bd0c97..89e0a0c 100644
+--- a/tools/ginac-excompiler.in
++++ b/tools/ginac-excompiler.in
+@@ -1,2 +1,2 @@
+ #!/bin/sh
+-@CC@ -x c -fPIC -shared -o $1.so $1
++@CC@ -x c -fPIC -shared $GINAC_EXCOMPILER_FLAGS -o $1.so $1
diff --git a/scripts/yaptu.pyc b/scripts/yaptu.pyc
new file mode 100644
index 0000000..4fc1b3d
Binary files /dev/null and b/scripts/yaptu.pyc differ
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 8ad8a07..7c516ed 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -5,3 +5,12 @@ add_executable(viewgar viewgar.cpp)
 target_link_libraries(viewgar ginac)
 install(TARGETS viewgar RUNTIME DESTINATION "${BIN_INSTALL_DIR}")
 
+if (CMAKE_COMPILER_IS_GNUCC)
+    set (CC gcc)
+    configure_file (
+        "${CMAKE_CURRENT_SOURCE_DIR}/ginac-excompiler.in"
+        "${CMAKE_CURRENT_BINARY_DIR}/ginac-excompiler"
+    )
+
+    install(PROGRAMS ginac-excompiler DESTINATION "${BIN_INSTALL_DIR}")
+endif  (CMAKE_COMPILER_IS_GNUCC)
diff --git a/tools/ginac-excompiler.in b/tools/ginac-excompiler.in
index 0bd0c97..89e0a0c 100644
--- a/tools/ginac-excompiler.in
+++ b/tools/ginac-excompiler.in
@@ -1,2 +1,2 @@
 #!/bin/sh
-@CC@ -x c -fPIC -shared -o $1.so $1
+@CC@ -x c -fPIC -shared $GINAC_EXCOMPILER_FLAGS -o $1.so $1