[metapost] Can't label with "btex etex"

[Hans Hagen]

On 8/11/2019 1:42 PM, 3160105656 at zju.edu.cn wrote:
> Hi.I am a user of MetaPost.
> 
> Today I failed to compile a mp file I wrote(example.mp and I put it in 
> accessory).
> 
> The error is cause by the statement "label(btex 1 etex,(0,0));" which I 
> have noted it.
> 
> And my compiler told me that it "Unable to read  mpx file".
> 
> I want to know how to solve the problem for I really need to label my 
> figure.Thanks!
Just watch closely to the error message: it looks like it wants to call 
"tex --parse-first-line etc" so maybe you need to configure someplace 
that you want to call e.g. pdftex or maybe you need to call it with some 
specific macro package.

Hans

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