Fix PowerMac compile on G4's and G5's

1 files changed, 14 insertions, 2 deletions

diff --git a/darn.cpp b/darn.cpp
index 0cc05687..87640a25 100644
--- a/darn.cpp
+++ b/darn.cpp
@@ -16,8 +16,10 @@
 

 // Inline assembler available in GCC 3.2 or above. For practical

 // purposes we check for GCC 4.0 or above. GCC imposters claim

-// to be GCC 4.2.1 so it will capture them, too.

-#if (__GNUC__ >= 4) || defined(__IBM_GCC_ASM)

+// to be GCC 4.2.1 so it will capture them, too. We exclude the

+// Apple machines because they are not Power9 and use a slightly

+// different syntax in their assembler.

+#if ((__GNUC__ >= 4) || defined(__IBM_GCC_ASM)) && !defined(__APPLE__)

 # define GCC_DARN_ASM_AVAILABLE 1

 #endif

 

@@ -60,7 +62,12 @@ inline void DARN32(void* output)
     // This is probably going to break some platforms.

     // We will deal with them as we encounter them.

     *ptr = __builtin_darn_32();

+#elif defined(__APPLE__)

+    // Nop. Apple G4 and G5 machines are too old. They will

+    // avoid this code path because HasPower9() returns false.

+    CRYPTOPP_ASSERT(0);

 #else

+    // Catch other compile breaks

     int XXX[-1];

 #endif

 }

@@ -97,7 +104,12 @@ inline void DARN64(void* output)
     // This is probably going to break some platforms.

     // We will deal with them as we encounter them.

     *ptr = __builtin_darn();

+#elif defined(__APPLE__)

+    // Nop. Apple G4 and G5 machines are too old. They will

+    // avoid this code path because HasPower9() returns false.

+    CRYPTOPP_ASSERT(0);

 #else

+    // Catch other compile breaks

     int XXX[-1];

 #endif

 }