Fix compilation for ARM/uClibc

src/platform-linux.cc

Index: src/platform-linux.cc
diff --git a/src/platform-linux.cc b/src/platform-linux.cc
index 9028fd0238a9d5b1cae6672c7cb10cf77c05046a..adcfe6c53dac95e1ed2890794d9f8d5416203d29 100644
--- a/src/platform-linux.cc
+++ b/src/platform-linux.cc
@@ -1025,7 +1025,8 @@ static void ProfilerSignalHandler(int signal, siginfo_t* info, void* context) {
   sample->fp = reinterpret_cast<Address>(mcontext.gregs[REG_RBP]);
 #elif V8_HOST_ARCH_ARM
 // An undefined macro evaluates to 0, so this applies to Android's Bionic also.
-#if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
+#if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3) && \
+    (__UCLIBC__ != 1))

[digit1, 2012/07/13 08:33:22]

fwiw, I'm working on a similar patch for Android (which will provide ucontext_t
soon).

What about just using this instead:

  #if defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__
<= 3))

Does UCLibc defines __GLIBC__ ?

[remi.duraffort, 2012/07/16 08:43:23]

uClibc does defines __GLIBC__ for compatibility reasons.
I will update my patch to be a "defined(__UCLIBC__)"

   sample->pc = reinterpret_cast<Address>(mcontext.gregs[R15]);
   sample->sp = reinterpret_cast<Address>(mcontext.gregs[R13]);
   sample->fp = reinterpret_cast<Address>(mcontext.gregs[R11]);