add D_XOPEN_SOURCE flag for compile on mac, linux

scipopt · Aug 13, 2021 · 5d5bd88 · 5d5bd88
1 parent 518622c
commit 5d5bd88
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diff --git a/CHANGELOG b/CHANGELOG
@@ -47,6 +47,8 @@ Build system
 
 ### Cmake
 
+- add -D_XOPEN_SOURCE=600 cflag for compilation on systems other than windows
+
 ### Makefile
 
 Fixed bugs

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
@@ -9,6 +9,11 @@ endfunction(setLibProperties)
 
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_STANDARD_REQUIRED on)
+set(CMAKE_C_EXTENSIONS OFF)
+
+if(NOT WIN32)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=600")
+endif()
 
 #configure the scipbuildflags.c source file for the build tree
 configure_file(${PROJECT_SOURCE_DIR}/src/scipbuildflags.c.in