Merge branch 'fix-cmake' into 'master'

fix cmake build without elfio

See merge request !4

CMakeLists.txt

@@ -13,8 +13,10 @@ set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 
 option(USE_ELFIO "Use the elfio library to parse elf files" OFF)
 if(USE_ELFIO)
-   add_definitions(-DUSE_ELFIO)
+   add_definitions(-DUSE_ELFIO=1)
    include_directories(${CMAKE_CURRENT_SOURCE_DIR}/third-party/elfio-code/)
+ else()
+   add_definitions(-DUSE_ELFIO=0)
 endif()
 
 # Use C++17
@@ -44,4 +46,4 @@ file(
             )
         "
     )
-export(PACKAGE ehp)
\ No newline at end of file
+export(PACKAGE ehp)