Restore V8_LIBC_UCLIBC as a libc option.

include/v8config.h

Index: include/v8config.h
diff --git a/include/v8config.h b/include/v8config.h
index fabf13b61a7e5d58b9db4f8e634d741f2d09e588..a0d9b5c967d4679d9129ac5b083f759b981ac778 100644
--- a/include/v8config.h
+++ b/include/v8config.h
@@ -124,6 +124,7 @@
 //  V8_LIBC_BIONIC  - Bionic libc
 //  V8_LIBC_BSD     - BSD libc derivate
 //  V8_LIBC_GLIBC   - GNU C library
+//  V8_LIBC_UCLIBC  - uClibc

[smcgruer2, 2015/04/13 16:41:25]

I'm on the fence about reintroducing this, as it's not actually used anywhere in
the code. It's main purpose is to stop uClibc from pretending to be glibc, which
could also be done by changing the V8_LIBC_GLIBC check to:

#elif (defined(__GLIBC__) || defined(__GNU_LIBRARY__)) && !defined(__UCLIBC__)

 //
 // Note that testing for libc must be done using #if not #ifdef. For example,
 // to test for the GNU C library, use:
@@ -136,6 +137,9 @@
 #elif defined(__BIONIC__)
 # define V8_LIBC_BIONIC 1
 # define V8_LIBC_BSD 1
+#elif defined(__UCLIBC__)
+// Must test for UCLIBC before GLIBC, as UCLIBC pretends to be GLIBC.
+# define V8_LIBC_UCLIBC 1
 #elif defined(__GLIBC__) || defined(__GNU_LIBRARY__)
 # define V8_LIBC_GLIBC 1
 #else