diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1c4a46b..1ad29f0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,8 +34,8 @@
 message(STATUS "VERSION = ${VERSION}, BUILD = ${BUILD}")
 
 option(WITH_SIMD "Include SIMD extensions" TRUE)
-option(WITH_ARITH_ENC "Include arithmetic encoding support" TRUE)
-option(WITH_ARITH_DEC "Include arithmetic decoding support" TRUE)
+option(WITH_ARITH_ENC "Include arithmetic encoding support when emulating the libjpeg v6b API/ABI" TRUE)
+option(WITH_ARITH_DEC "Include arithmetic decoding support when emulating the libjpeg v6b API/ABI" TRUE)
 option(WITH_JPEG7 "Emulate libjpeg v7 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b)" FALSE)
 option(WITH_JPEG8 "Emulate libjpeg v8 API/ABI (this makes libjpeg-turbo backward incompatible with libjpeg v6b)" FALSE)
 option(WITH_MEM_SRCDST "Include in-memory source/destination manager functions when emulating the libjpeg v6b or v7 API/ABI" TRUE)
@@ -57,6 +57,14 @@
   set(BITS_IN_JSAMPLE 8)
 endif()
 
+if(WITH_JPEG8 OR WITH_JPEG7)
+  set(WITH_ARITH_ENC 1)
+  set(WITH_ARITH_DEC 1)
+endif()
+if(WITH_JPEG8)
+  set(WITH_MEM_SRCDST 1)
+endif()
+
 if(WITH_ARITH_ENC)
   set(C_ARITH_CODING_SUPPORTED 1)
   message(STATUS "Arithmetic encoding support enabled")
diff --git a/configure.ac b/configure.ac
index d6a3e33..9b2c573 100644
--- a/configure.ac
+++ b/configure.ac
@@ -279,10 +279,13 @@
 AC_MSG_CHECKING([whether to include arithmetic encoding support])
 AC_ARG_WITH([arith-enc],
   AC_HELP_STRING([--without-arith-enc],
-    [Do not include arithmetic encoding support]))
+    [Do not include arithmetic encoding support when emulating the libjpeg v6b API/ABI]))
 if test "x$with_12bit" = "xyes"; then
   with_arith_enc=no
 fi
+if test "x${with_jpeg8}" = "xyes" -o "x${with_jpeg7}" = "xyes"; then
+  with_arith_enc=yes
+fi
 if test "x$with_arith_enc" = "xno"; then
   AC_MSG_RESULT(no)
   RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-enc"
@@ -295,10 +298,13 @@
 AC_MSG_CHECKING([whether to include arithmetic decoding support])
 AC_ARG_WITH([arith-dec],
   AC_HELP_STRING([--without-arith-dec],
-    [Do not include arithmetic decoding support]))
+    [Do not include arithmetic decoding support when emulating the libjpeg v6b API/ABI]))
 if test "x$with_12bit" = "xyes"; then
   with_arith_dec=no
 fi
+if test "x${with_jpeg8}" = "xyes" -o "x${with_jpeg7}" = "xyes"; then
+  with_arith_dec=yes
+fi
 if test "x$with_arith_dec" = "xno"; then
   AC_MSG_RESULT(no)
   RPM_CONFIG_ARGS="$RPM_CONFIG_ARGS --without-arith-dec"