Make sure we get C99

The compiler might default to something older, so make sure we get
the features we need.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ca1e85b68f0af013f109e64c9cba6eb840d0ab83..a63288a374055bfa93b5af42bf8efd18b5fbb713 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -68,6 +68,9 @@ set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -UNDEBUG")
 set(CMAKE_C_FLAGS_MINSIZEREL "${CMAKE_C_FLAGS_MINSIZEREL} -UNDEBUG")
 set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -UNDEBUG")
 
+# Make sure we get a sane C version
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
+
 # Tell the compiler to be stringent
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wformat=2")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wformat=2")