+++ /dev/null
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -12,6 +12,9 @@
- #set(MathGL_VERSION_MINOR 2.2)
- set(MathGL_SOVERSION 7.3.0)
-
-+set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-z,relro")
-+set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,relro")
-+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,relro")
-
- MACRO(MGL_DEPENDENT_OPTION option doc default depends1 force1 depends2 force2)
- IF(${option}_ISSET MATCHES "^${option}_ISSET$")
-@@ -59,7 +62,7 @@
- set(MGL_LIB_INSTALL_DIR "lib" CACHE STRING "Set library install directory")
-
- option(enable-double "Enable double precision in MathGL library" ON)
--option(enable-mpi "Enable mpi")
-+option(enable-mpi "Enable mpi" ON)
- option(enable-opengl "Enable OpenGL support" ON)
- option(enable-all-docs "Enable all documentation building")
- #option(enable-doc "Enable documentation building")
-@@ -92,7 +95,7 @@
- CMAKE_DEPENDENT_OPTION(enable-glut "Enable glut support" OFF "NOT enable-all-widgets" ON)
- CMAKE_DEPENDENT_OPTION(enable-fltk "Enable fltk widget" OFF "NOT enable-all-widgets" ON)
- CMAKE_DEPENDENT_OPTION(enable-wx "Enable wxWidget widget" OFF "NOT enable-all-widgets" ON)
--CMAKE_DEPENDENT_OPTION(enable-qt4 "Enable Qt4 widget" OFF "NOT enable-all-widgets" ON)
-+CMAKE_DEPENDENT_OPTION(enable-qt4 "Enable Qt4 widget" ON "NOT enable-all-widgets" ON)
- CMAKE_DEPENDENT_OPTION(enable-qt5 "Enable Qt5 widget" OFF "NOT enable-all-widgets" ON)
- CMAKE_DEPENDENT_OPTION(enable-qt5asqt "Set Qt5 as default libmgl-qt" ON "enable-qt5" OFF)
-