CMake: Allow building as static lib in MSVC

Set the LIBIIO_STATIC define when compiling a static library, which then causes the __api to be resolved as empty. This fixes building statically under MSVC. Fixes #616. Signed-off-by: Paul Cercueil <[email protected]>
analogdevicesinc · Apr 7, 2021 · 365108d · 365108d
1 parent fdb2ae9
commit 365108d
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diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -35,6 +35,10 @@ endif()
 
 set(BUILD_SHARED_LIBS ON CACHE BOOL "Build shared libraries")
 
+if (NOT BUILD_SHARED_LIBS)
+	add_definitions(-DLIBIIO_STATIC=1)
+endif()
+
 if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
 	option(OSX_PACKAGE "Create a OSX package" ON)
 

diff --git a/iio.h b/iio.h
@@ -72,7 +72,9 @@ typedef ptrdiff_t ssize_t;
 #endif
 
 #ifdef _WIN32
-#   ifdef LIBIIO_EXPORTS
+#   ifdef LIBIIO_STATIC
+#	define __api
+#   elif defined(LIBIIO_EXPORTS)
 #	define __api __declspec(dllexport)
 #   else
 #	define __api __declspec(dllimport)