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Date: Fri, 23 Oct 2020 16:53:14 +0800
From: "Chen Wang" <unicorn_wang@...look.com>
To: musl <musl@...ts.openwall.com>
Cc: unicorn_wang <unicorn_wang@...look.com>
Subject: Re: Re: 回复: issue when running libc-test
Yes, I think it should be conditional silenced for musl, otherwise it has blocked following builds, such as for main.exe and runtest.exe.
So I think it is an issue, right?
Best Regards
Wang Chen
发件人： Szabolcs Nagy
发送时间： 2020-10-23 16:48
收件人： Chen Wang
抄送： musl
主题： Re: [musl]回复: issue when running libc-test
* Chen Wang <unicorn_wang@...look.com> [2020-10-23 15:19:05 +0800]:
> Correct some comments in last email. The issue is not due to lacking of header file, it should be due to some constants are lost, I paste the whole error report here FYR:
>
> ../install/bin/musl-gcc -Isrc/common -Isrc/common -pipe -std=c99 -D_POSIX_C_SOURCE=200809L -Wall -Wno-unused-function -Wno-missing-braces -Wno-unused -Wno-overflow -Wno-unknown-pragmas -fno-builtin -frounding-math -Werror=implicit-function-declaration -Werror=implicit-int -Werror=pointer-sign -Werror=pointer-arith -g -D_FILE_OFFSET_BITS=64 -pedantic-errors -Werror -Wno-unused -D_XOPEN_SOURCE=700 -c -o src/api/unistd.o src/api/unistd.c 2>src/api/unistd.o.err || echo BUILDERROR src/api/unistd.o; cat src/api/unistd.o.err
> BUILDERROR src/api/unistd.o
> src/api/unistd.c: In function ‘f’:
> src/api/unistd.c:87:3: error: ‘_CS_POSIX_V7_THREADS_CFLAGS’ undeclared (first use in this function)
> 87 | C(_CS_POSIX_V7_THREADS_CFLAGS)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> src/api/unistd.c:5:21: note: in definition of macro ‘C’
> 5 | #define C(n) switch(n){case n:;}
> | ^
> src/api/unistd.c:87:3: note: each undeclared identifier is reported only once for each function it appears in
> 87 | C(_CS_POSIX_V7_THREADS_CFLAGS)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> src/api/unistd.c:5:21: note: in definition of macro ‘C’
> 5 | #define C(n) switch(n){case n:;}
> | ^
> src/api/unistd.c:88:3: error: ‘_CS_POSIX_V7_THREADS_LDFLAGS’ undeclared (first use in this function)
> 88 | C(_CS_POSIX_V7_THREADS_LDFLAGS)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> src/api/unistd.c:5:21: note: in definition of macro ‘C’
> 5 | #define C(n) switch(n){case n:;}
> | ^
> src/api/unistd.c:117:3: error: ‘_PC_TIMESTAMP_RESOLUTION’ undeclared (first use in this function)
> 117 | C(_PC_TIMESTAMP_RESOLUTION)
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> src/api/unistd.c:5:21: note: in definition of macro ‘C’
> 5 | #define C(n) switch(n){case n:;}
> | ^
> src/api/unistd.c:238:3: error: ‘_SC_XOPEN_UUCP’ undeclared (first use in this function)
> 238 | C(_SC_XOPEN_UUCP)
> | ^~~~~~~~~~~~~~
> src/api/unistd.c:5:21: note: in definition of macro ‘C’
> 5 | #define C(n) switch(n){case n:;}
> | ^
>
> and this would cause the following main.exe and runtest.exe failed to be built.
this is expected:
posix requires these macros but musl does not define them.
in practice they are unlikely to be needed so i guess
these should be silenced in some way.
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