[PATCH 1/3] build: Check for madvise syscall

[Cyrill Gorcunov]

Need to check if madvise is present in the system

Part of #3509
---
https://github.com/tarantool/tarantool/issues/3509

 CMakeLists.txt       | 11 +++++++++++
 small/config.h.cmake |  9 +++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 small/config.h.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ad27423..97d25bc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,8 @@
 project(small C CXX)
 cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
 
+include(CheckFunctionExists)
+
 if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE Debug)
 endif()
@@ -15,10 +17,19 @@ endif()
 # Enable GNU glibc extentions.
 add_definitions("-D_GNU_SOURCE")
 
+check_function_exists(madvise TARANTOOL_SMALL_HAS_MADVISE)
+
+configure_file(
+    "small/config.h.cmake"
+    "small/config.h"
+    )
+message (STATUS "")
+
 # Valgrind
 include_directories(third_party)
 
 set(lib_headers
+    small/config.h
     small/ibuf.h
     small/lf_lifo.h
     small/lifo.h
diff --git a/small/config.h.cmake b/small/config.h.cmake
new file mode 100644
index 0000000..1c9db10
--- /dev/null
+++ b/small/config.h.cmake
@@ -0,0 +1,9 @@
+#ifndef TARANTOOL_SMALL_CONFIG_H_INCLUDED
+#define TARANTOOL_SMALL_CONFIG_H_INCLUDED
+
+/*
+ * Defined if this platform has madvise(..).
+ */
+ #cmakedefine TARANTOOL_SMALL_HAS_MADVISE 1
+
+#endif /* TARANTOOL_SMALL_CONFIG_H_INCLUDED */
-- 
2.20.1