pkg html/template, const ErrPredefinedEscaper = 11
pkg html/template, const ErrPredefinedEscaper ErrorCode
pkg image/png, type Encoder struct, BufferPool EncoderBufferPool
pkg image/png, type EncoderBuffer struct
pkg image/png, type EncoderBufferPool interface { Get, Put }
pkg image/png, type EncoderBufferPool interface, Get() *EncoderBuffer
pkg image/png, type EncoderBufferPool interface, Put(*EncoderBuffer)
pkg math/big, method (*Int) IsInt64() bool

	// #cgo CFLAGS: -DPNG_DEBUG=1
	// #cgo amd64 386 CFLAGS: -DX86=1
	// #cgo LDFLAGS: -lpng
	// #include <png.h>
	import "C"

Alternatively, CPPFLAGS and LDFLAGS may be obtained via the pkg-config tool
using a '#cgo pkg-config:' directive followed by the package names.
For example:

	// #cgo pkg-config: png cairo
	// #include <png.h>
	import "C"

The default pkg-config tool may be changed by setting the PKG_CONFIG environment variable.

# CL 129190043 png: make the encoder configurable, Jeff R. Allen <******@****.***>
pkg image/png, const BestCompression = -3
pkg image/png, const BestCompression CompressionLevel
pkg image/png, const BestSpeed = -2
pkg image/png, const BestSpeed CompressionLevel
pkg image/png, const DefaultCompression = 0
pkg image/png, const DefaultCompression CompressionLevel
pkg image/png, const NoCompression = -1