diff --git a/README.md b/README.md
index 23cf1fd..7b7194e 100644
--- a/README.md
+++ b/README.md
@@ -459,10 +459,10 @@ construction variables can be overridden by the user.
 | SHCC | String | Shared object C compiler | "${CC}" |
 | SHCCCMD | Array | Shared object C compiler command line | ["${SHCC}", "-c", "-o", "${_TARGET}", "${CCDEPGEN}", "${INCPREFIX}${CPPPATH}", "${CPPFLAGS}", "${SHCFLAGS}", "${SHCCFLAGS}", "${_SOURCES}"] |
 | SHCCFLAGS | Array | Shared object C and C++ compiler flags | Windows: ["${CCFLAGS}"], POSIX: ["${CCFLAGS}", -fPIC"] |
-| SHCFLAGS | Array | Shared object C compiler flags | [] |
+| SHCFLAGS | Array | Shared object C compiler flags | ["${CFLAGS}"] |
 | SHCXX | String | Shared object C++ compiler | "${CXX}" |
 | SHCXXCMD | Array | Shared object C++ compiler command line | ["${SHCXX}", "-c", "-o", "${_TARGET}", "${CXXDEPGEN}", "${INCPREFIX}${CPPPATH}", "${CPPFLAGS}", "${SHCXXFLAGS}", "${SHCCFLAGS}", "${_SOURCES}"] |
-| SHCXXFLAGS | Array | Shared object C++ compiler flags | [] |
+| SHCXXFLAGS | Array | Shared object C++ compiler flags | ["${CXXFLAGS}"] |
 | SHDC | String | Shared object D compiler | "gdc" |
 | SHDCCMD | Array | Shared object D compiler command line | ["${SHDC}", "-c", "-o", "${_TARGET}", "${INCPREFIX}${D_IMPORT_PATH}", "${SHDFLAGS}", "${_SOURCES}"] |
 | SHDFLAGS | Array | Shared object D compiler flags | Windows: ["${DFLAGS}"], POSIX: ["${DFLAGS}", "-fPIC"] |
diff --git a/lib/rscons/builders/shared_object.rb b/lib/rscons/builders/shared_object.rb
index 701ad77..9dbbcf6 100644
--- a/lib/rscons/builders/shared_object.rb
+++ b/lib/rscons/builders/shared_object.rb
@@ -24,11 +24,11 @@ module Rscons
           'SHCCFLAGS' => ['${CCFLAGS}'] + pic_flags,
 
           'SHCC' => '${CC}',
-          'SHCFLAGS' => [],
+          'SHCFLAGS' => ['${CFLAGS}'],
           'SHCCCMD' => ['${SHCC}', '-c', '-o', '${_TARGET}', '${CCDEPGEN}', '${INCPREFIX}${CPPPATH}', '${CPPFLAGS}', '${SHCFLAGS}', '${SHCCFLAGS}', '${_SOURCES}'],
 
           'SHCXX' => '${CXX}',
-          'SHCXXFLAGS' => [],
+          'SHCXXFLAGS' => ['${CXXFLAGS}'],
           'SHCXXCMD' => ['${SHCXX}', '-c', '-o', '${_TARGET}', '${CXXDEPGEN}', '${INCPREFIX}${CPPPATH}', '${CPPFLAGS}', '${SHCXXFLAGS}', '${SHCCFLAGS}', '${_SOURCES}'],
 
           'SHDC' => 'gdc',