static: remove -Wl,--no-undefined from ldflags. Go 1.17 will have sup…

…port for linking with LLVM lld, but LLD its self doesn't accept --no-undefined (#481)

sdl/sdl_cgo_static.go

@@ -4,11 +4,11 @@ package sdl
 
 //#cgo CFLAGS: -I${SRCDIR}/../.go-sdl2-libs/include -I${SRCDIR}/../.go-sdl2-libs/include/SDL2
 //#cgo LDFLAGS: -L${SRCDIR}/../.go-sdl2-libs
-//#cgo linux,386 LDFLAGS: -lSDL2_linux_386 -Wl,--no-undefined -lm -ldl -lasound -lm -ldl -lpthread -lX11 -lXext -lXcursor -lXinerama -lXi -lXrandr -lXss -lXxf86vm -lpthread -lrt
-//#cgo linux,amd64 LDFLAGS: -lSDL2_linux_amd64 -Wl,--no-undefined -lm -ldl -lasound -lm -ldl -lpthread -lX11 -lXext -lXcursor -lXinerama -lXi -lXrandr -lXss -lXxf86vm -lpthread -lrt
-//#cgo windows,386 LDFLAGS: -lSDL2_windows_386 -lSDL2main_windows_386 -mwindows -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -static-libgcc
-//#cgo windows,amd64 LDFLAGS: -lSDL2_windows_amd64 -lSDL2main_windows_amd64 -mwindows -Wl,--no-undefined -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lversion -luuid -lsetupapi -static-libgcc
+//#cgo linux,386 LDFLAGS: -lSDL2_linux_386 -lm -ldl -lasound -lm -ldl -lpthread -lX11 -lXext -lXcursor -lXinerama -lXi -lXrandr -lXss -lXxf86vm -lpthread -lrt
+//#cgo linux,amd64 LDFLAGS: -lSDL2_linux_amd64 -lm -ldl -lasound -lm -ldl -lpthread -lX11 -lXext -lXcursor -lXinerama -lXi -lXrandr -lXss -lXxf86vm -lpthread -lrt
+//#cgo windows,386 LDFLAGS: -lSDL2_windows_386 -lSDL2main_windows_386 -mwindows -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lsetupapi -lversion -luuid -static-libgcc
+//#cgo windows,amd64 LDFLAGS: -lSDL2_windows_amd64 -lSDL2main_windows_amd64 -mwindows -lm -ldinput8 -ldxguid -ldxerr8 -luser32 -lgdi32 -lwinmm -limm32 -lole32 -loleaut32 -lshell32 -lversion -luuid -lsetupapi -static-libgcc
 //#cgo darwin,amd64 LDFLAGS: -lSDL2_darwin_amd64 -lm -liconv -Wl,-framework,OpenGL -Wl,-framework,CoreAudio -Wl,-framework,AudioToolbox -Wl,-framework,ForceFeedback -lobjc -Wl,-framework,CoreVideo -Wl,-framework,Cocoa -Wl,-framework,Carbon -Wl,-framework,IOKit -Wl,-framework,Metal
-//#cgo android,arm LDFLAGS: -lSDL2_android_arm -Wl,--no-undefined -lm -ldl -llog -landroid -lGLESv2 -lGLESv1_CM
-//#cgo linux,arm,!android LDFLAGS: -L/opt/vc/lib -L/opt/vc/lib64 -lSDL2_linux_arm -Wl,--no-undefined -lm -ldl -liconv -lbcm_host -lvcos -lvchiq_arm -pthread
+//#cgo android,arm LDFLAGS: -lSDL2_android_arm -lm -ldl -llog -landroid -lGLESv2 -lGLESv1_CM
+//#cgo linux,arm,!android LDFLAGS: -L/opt/vc/lib -L/opt/vc/lib64 -lSDL2_linux_arm -lm -ldl -liconv -lbcm_host -lvcos -lvchiq_arm -pthread
 import "C"