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Re: [PATCH] make gl_VISIBILITY to reject unsupported configurations with
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From: |
Bruno Haible |
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Subject: |
Re: [PATCH] make gl_VISIBILITY to reject unsupported configurations with newer gcc |
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Date: |
Wed, 26 May 2021 01:54:59 +0200 |
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User-agent: |
KMail/5.1.3 (Linux/4.4.0-210-generic; KDE/5.18.0; x86_64; ; ) |
Hi,
Ozkan Sezer wrote:
> The attached patch makes gl_VISIBILITY to reject unsupported configurations
> with newer gcc: In its current form, mingw gcc-4.5.4 rejects the attributes
> but gcc-7.5 does not, apparently because the attributes are applied to func
> prototypes without their definitions. Attaching a hidden visibility attrib
> to dummyfunc() makes gcc-7.5 to reject it properly.
I don't fully understand why we should apply the patch.
With gcc 7.5 on mingw and the visibility.m4 that is in gnulib now:
What is the result of the
checking for simple visibility declarations...
test? What are the effects: warnings? compilation errors? link errors? too
many exported symbols? too few exported symbols?
Maybe you also have a test case, that you could show?
Bruno