# ~~~
# Find the dependencies of libpluginprocess to determine if plugins
# which depend on it can be included or not.
#
#  HAVE_MKFIFO                  - True if mkfifo is available on the platform
#  HAVE_FORK                    - True if fork is available on the platform
#  HAVE_PLUGINPROCESS	        - True if the pluginprocess library can be built
#  PLUGINPROCESS_NOTFOUND_INFO	- A string describing which pluginprocess dependency is missing
#
# ~~~
include (SafeCheckSymbolExists)

safe_check_symbol_exists (mkfifo "sys/types.h;sys/stat.h" HAVE_MKFIFO)
safe_check_symbol_exists (fork "sys/types.h;unistd.h" HAVE_FORK)

if (HAVE_MKFIFO)
	if (HAVE_FORK)
		if (ENABLE_ASAN AND CMAKE_SYSTEM_NAME MATCHES FreeBSD)
			set (PLUGINPROCESS_NOTFOUND_INFO "pluginprocess library does not work with enabled AddressSanitizer on FreeBSD")
		else (ENABLE_ASAN AND CMAKE_SYSTEM_NAME MATCHES FreeBSD)
			set (PLUGINPROCESS_FOUND 1)
		endif (ENABLE_ASAN AND CMAKE_SYSTEM_NAME MATCHES FreeBSD)
	else (HAVE_FORK)
		set (PLUGINPROCESS_NOTFOUND_INFO "fork does not exist on the target platform, excluding pluginprocess library")
	endif (HAVE_FORK)
else (HAVE_MKFIFO)
	set (PLUGINPROCESS_NOTFOUND_INFO "mkfifo does not exist on the target platform, excluding pluginprocess library")
endif (HAVE_MKFIFO)

mark_as_advanced (HAVE_MKFIFO HAVE_FORK PLUGINPROCESS_FOUND PLUGINPROCESS_NOTFOUND_INFO)