Unify additional languages support

Author: Growl1234

CMakeLists.txt

@@ -244,8 +244,8 @@ if(NOT DEFINED CMAKE_CXX_STANDARD)
 endif()
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-# Enable DFT-D4 languages before finding OpenMP.
-if(ENABLE_DFTD4)
+# Enable additional languages support for some dependencies
+if(ENABLE_DFTD4 OR ENABLE_PEXSI)
   enable_language(C)
   enable_language(Fortran)
 endif()
@@ -323,8 +323,6 @@ if(ENABLE_LCAO)
   endif()
 
   if(ENABLE_PEXSI)
-    enable_language(C)
-    enable_language(Fortran)
     find_package(PEXSI REQUIRED CONFIG)
     if(PEXSI_VERSION VERSION_LESS "2.0.0")
       message(FATAL_ERROR "PEXSI >= 2.0.0 is required")