fix analogdevicesinc#336, remove warnings on FreeBSD

Previously, building libiio on FreeBSD would warn with: network.c:240:8: warning: implicit declaration of function 'pipe2' is invalid in C99 This fixes that for all BSDs, since pipe2 (inside <unistd.h>) is protected by __BSD_VISIBLE. On Linux, it's protected by _GNU_SOURCE (which is already defined in the cmake). Signed-off-by: Robin Getz <[email protected]>
cristi-iacob · Jan 17, 2020 · 100f910 · 100f910
1 parent a904cd2
commit 100f910
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -98,6 +98,12 @@ IF(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 	add_definitions(-D_GNU_SOURCE=1)
 endif()
 
+# For BSD variants
+if(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD|DragonFly|OpenBSD|NetBSD")
+	set(CMAKE_REQUIRED_DEFINITIONS "-D__BSD_VISIBLE")
+	add_definitions(-D__BSD_VISIBLE=1)
+endif()
+
 option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
 if (ENABLE_IPV6)
 	check_symbol_exists(in6addr_any "netinet/in.h" HAVE_IPV6)