* doc/invoke.texi (Spec Files): Document getenv spec function.
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2007-02-22 Mark Mitchell <mark@codesourcery.com>
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* doc/invoke.texi (Spec Files): Document getenv spec function.
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* gcc.c (getenv_spec_function): New function.
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(static_spec_functions): Add it.
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* config/vxworks.h (VXWORKS_TARGET_DIR): Remove.
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@ -7415,6 +7415,19 @@ of the current spec.
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The following built-in spec functions are provided:
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@table @code
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@item @code{getenv}
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The @code{getenv} spec function takes two arguments: an environment
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variable name and a string. If the environment variable is not
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defined, a fatal error is issued. Otherwise, the return value is the
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value of the environment variable concatenated with the string. For
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example, if @env{TOPDIR} is defined as @file{/path/to/top}, then:
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@smallexample
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%:getenv(TOPDIR /include)
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@end smallexample
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expands to @file{/path/to/top/include}.
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@item @code{if-exists}
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The @code{if-exists} spec function takes one argument, an absolute
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pathname to a file. If the file exists, @code{if-exists} returns the
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