refactor(cmake): selectively remove sources on win32

Signed-off-by: Roberto Scolaro <roberto.scolaro21@gmail.com>

userspace/falco/CMakeLists.txt

@@ -53,9 +53,7 @@ set(
   logger.cpp
   falco_outputs.cpp
   outputs_file.cpp
-  outputs_program.cpp
   outputs_stdout.cpp
-  outputs_syslog.cpp
   event_drops.cpp
   stats_writer.cpp
   versions_info.cpp
@@ -90,6 +88,14 @@ if(USE_BUNDLED_DEPS)
   list(APPEND FALCO_DEPENDENCIES yamlcpp)
 endif()
 
+if(NOT WIN32)
+  list(
+    APPEND FALCO_SOURCES
+	outputs_program.cpp
+	outputs_syslog.cpp
+)
+endif()
+
 if(CMAKE_SYSTEM_NAME MATCHES "Linux" AND NOT MINIMAL_BUILD)
   list(
     APPEND FALCO_SOURCES

userspace/falco/falco_outputs.cpp

@@ -27,9 +27,11 @@ limitations under the License.
 #include "watchdog.h"
 
 #include "outputs_file.h"
-#include "outputs_program.h"
 #include "outputs_stdout.h"
+#if !defined(_WIN32)
+#include "outputs_program.h"
 #include "outputs_syslog.h"
+#endif
 #if !defined(_WIN32) && !defined(__EMSCRIPTEN__) && !defined(MINIMAL_BUILD)
 #include "outputs_http.h"
 #include "outputs_grpc.h"
@@ -100,10 +102,12 @@ void falco_outputs::add_output(falco::outputs::config oc)
 	{
 		oo = new falco::outputs::output_stdout();
 	}
+#ifndef _WIN32
 	else if(oc.name == "syslog")
 	{
 		oo = new falco::outputs::output_syslog();
 	}
+#endif
 #if !defined(_WIN32) && !defined(__EMSCRIPTEN__) && !defined(MINIMAL_BUILD)
 	else if(oc.name == "http")
 	{

userspace/falco/outputs_program.cpp

@@ -20,7 +20,6 @@ limitations under the License.
 
 void falco::outputs::output_program::open_pfile()
 {
-#ifndef _WIN32
 	if(m_pfile == nullptr)
 	{
 		m_pfile = popen(m_oc.options["program"].c_str(), "w");
@@ -30,7 +29,6 @@ void falco::outputs::output_program::open_pfile()
 			setvbuf(m_pfile, NULL, _IONBF, 0);
 		}
 	}
-#endif
 }
 
 void falco::outputs::output_program::output(const message *msg)
@@ -47,13 +45,11 @@ void falco::outputs::output_program::output(const message *msg)
 
 void falco::outputs::output_program::cleanup()
 {
-#ifndef _WIN32
 	if(m_pfile != nullptr)
 	{
 		pclose(m_pfile);
 		m_pfile = nullptr;
 	}
-#endif
 }
 
 void falco::outputs::output_program::reopen()

userspace/falco/outputs_syslog.cpp

@@ -16,14 +16,10 @@ limitations under the License.
 */
 
 #include "outputs_syslog.h"
-#ifndef _WIN32
 #include <syslog.h>
-#endif
 
 void falco::outputs::output_syslog::output(const message *msg)
 {
-#ifndef _WIN32
 	// Syslog output should not have any trailing newline
 	::syslog(msg->priority, "%s", msg->msg.c_str());
-#endif
 }