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Subject: Re: [FFmpeg-devel] [PATCH] configure: Check for the header
 sys/mmap.h when checking for mmap
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There maybe a spelling mistake, which in "check_func_headers sys/mman.h mmap".
It looks like should be "sys/mmap.h"


Thanks
------------------&nbsp;Original&nbsp;------------------
From:                                                                                                                        "FFmpeg development discussions and patches"                                                                                    <martin@martin.st&gt;;
Date:&nbsp;Thu, Jan 11, 2024 06:33 PM
To:&nbsp;"ffmpeg-devel"<ffmpeg-devel@ffmpeg.org&gt;;

Subject:&nbsp;[FFmpeg-devel] [PATCH] configure: Check for the header sys/mmap.h when checking for mmap



Whenever mmap is used, we include sys/mmap.h unconditionally
within HAVE_MMAP ifdefs.

When building for a system (e.g. mingw) that normally lacks the
mmap function, but if building with profiling enabled, the
profiling runtime which gets linked in in each test executable,
can contain a function named mmap, causing stray detection of it.

This fixes an issue reported at
https://github.com/mstorsjo/llvm-mingw/issues/390.
---
&nbsp;configure | 2 +-
&nbsp;1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure b/configure
index 0b5e83bd20..99fa5260a4 100755
--- a/configure
+++ b/configure
@@ -6457,7 +6457,7 @@ check_func&nbsp; getrusage
&nbsp;check_func&nbsp; gettimeofday
&nbsp;check_func&nbsp; isatty
&nbsp;check_func&nbsp; mkstemp
-check_func&nbsp; mmap
+check_func_headers sys/mman.h mmap
&nbsp;check_func&nbsp; mprotect
&nbsp;# Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
&nbsp;check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
-- 
2.39.3 (Apple Git-145)

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