go - `-X` 的参数中 `go build -ldflags` 的含义是什么？

Question

在golang的文档中，我找不到任何关于-ldflags参数的解释。

go build -ldflags "-X main.version=${IDE_DATE}-${IDE_VERSION}-${IDE_OS}-${IDE_ARCH}-DEBUG" -o $2 cmd/backend.go

在哪里可以找到有关 -ldflags 的文档？

Answer 1

ldflags 代表链接器标志，用于将标志传递给底层链接器。根据文档:

-X importpath.name=value
    Set the value of the string variable in importpath named name to value.
    This is only effective if the variable is declared in the source code either uninitialized
    or initialized to a constant string expression. -X will not work if the initializer makes
    a function call or refers to other variables.
    Note that before Go 1.5 this option took two separate arguments.

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