从 go 构建 vips 库的问题

Question

我正在尝试 run/build 使用 vips 的 GoLang 包。当我尝试编译程序时出现此错误： go build gopkg.in/h2non/bimg.v1: invalid flag in pkg-config --cflags: -Xpreprocessor

这是我的规格：

macOS Mojave Version 10.14.3
vips Version 8.7.4
go Version 1.11.5 darwin/amd64

我读到一些添加 CGOALLOWEDFLAGS 的问题我也试过了，但没有成功。

Answer 1

CFLAGS 是给 C 编译器的额外标志。（常用于make，见：https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html）

gopkg.in/h2non/bimg.v1/vips.go uses pkg-config to generate the extra flags. It has -Xpreprocessor 标志，CGo 不允许（在撰写本文时默认情况下）。

For security reasons, only a limited set of flags are allowed, notably -D, -I, and -l. To allow additional flags, set CGO_CFLAGS_ALLOW to a regular expression matching the new flags. To disallow flags that would otherwise be allowed, set CGO_CFLAGS_DISALLOW to a regular expression matching arguments that must be disallowed. In both cases the regular expression must match a full argument: to allow -mfoo=bar, use CGO_CFLAGS_ALLOW='-mfoo.*', not just CGO_CFLAGS_ALLOW='-mfoo'. (See: https://golang.org/cmd/cgo/)

要允许-Xpreprocessor，可以设置CGO_CFLAGS_ALLOW=-Xpreprocessor。例如：

CGO_CFLAGS_ALLOW=-Xpreprocessor go vet ./...

从 go 构建 vips 库的问题

Issues building vips library from go

macos

go

vips