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-rw-r--r--CMakeLists.txt2
1 files changed, 1 insertions, 1 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7306179c25..d0552ce0f2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -72,7 +72,7 @@ endif(WITH_COVERAGE)
set(CMAKE_CONFIGURATION_TYPES Debug Release RelWithDebugInfo Sanitize)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -ftemplate-depth=1024 -fPIC -fvisibility=hidden -Wall -Wextra -Wshadow -Wnon-virtual-dtor -Wno-variadic-macros -Wno-unknown-pragmas")
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC -fvisibility=hidden -Wall -Wextra -Wshadow -Wno-variadic-macros -Wno-unknown-pragmas")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -fPIC -fvisibility=hidden -Wall -Wextra -Wshadow -Wno-variadic-macros -Wno-unknown-pragmas")
if (WITH_ERROR)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")