INSTALL: Document C++11 compiler support requirement.

diff --git a/INSTALL b/INSTALL
index 4a93e081738a503c86e0d9a2a1b365abda84dbc1..35e2a520932228549ea05500c6fba19771dc027e 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -6,7 +6,9 @@ Requirements
 ------------
 
  - git
- - g++
+ - A C++ compiler with C++11 support (-std=c++11 option), e.g.
+   - g++ (>= 4.7)
+   - clang++ (>= 3.1)
  - make
  - libtool
  - pkg-config >= 0.22