Den tis 1 juli 2025 kl 00:37 skrev Branko Čibej <[email protected]>:
> On 30. 6. 25 23:53, Graham Leggett wrote:
> > On 30 Jun 2025, at 09:31, [email protected] wrote:
> >
> >> Author: brane
> >> Date: Mon Jun 30 08:31:43 2025
> >> New Revision: 1926869
> >>
> >> URL: http://svn.apache.org/viewvc?rev=1926869&view=rev
> >> Log:
> >> In the CMake build, make MockHTTPinC a separats static library and
> change
> >> flags to use C99 and silence all warnings only for that target.
> >>
> >> * test/CMakeLists.txt: Include the MockHTTPinC subdirectory and don't
> >> fiddle with the CMAKE_C_FLAGS.
> >> (TEST_ALL_SOURCES): Remove the MockHTTPinC source files.
> >> (test_all): Depend on an link the mockhttpinc library.
> >>
> >> * test/MockHTTPinC/CMakeLists.txt: New. Build the mockhttpinc library.
> >
> > I'm getting this sudden build failure on RHEL9, looks like some header
> > files are being included in the wrong order if google is to be
> > believed. Do you see anything like this?
> >
> > [ 88%] Building C object
> > test/MockHTTPinC/CMakeFiles/mockhttpinc.dir/MockHTTP.c.o
> >
> > In file included from /usr/include/apr-1/apr.h:19,
> >
> > from /usr/include/apr-1/apr_pools.h:43,
> >
> > from
> >
> /home/minfrin/src/apache/sandbox/serf/test/MockHTTPinC/MockHTTP_private.h:19,
> >
> > from
> > /home/minfrin/src/apache/sandbox/serf/test/MockHTTPinC/MockHTTP.c:16:
> >
> > /usr/include/apr-1/apr-x86_64.h:632:2: error: #error no decision has
> > been made on APR_PATH_MAX for your platform
> >
> > 632 | #errorno decision has been made on APR_PATH_MAX for your platform
> >
> > | ^~~~~
> >
>
I get the same problem on Rocky Linux 9.
$ rm -rf out; svn up -r1926868 && cmake -B out && cmake --build out
[... succeeds ...]
$ rm -rf out; svn up -r1926869 && cmake -B out && cmake --build out
[... fails ...]
>
> No, I'm not seeing that, and I tested on macOS, Debian 12 and Windows.
> Looking at the include trace, the headers are included are in the
> correct order. APR_PATH_MAX should be defined in apr.h, based on
> PATH_MAX from <limits.h>.
>
> apr-x86_64.h is not an APR header, so I can't even begin to guess what
> was patched on RHEL, sorry. I can't imagine in which universe it
> wouldn't have a standard <limits.h> header.
>
On RHEL it seems like apr.h is only a stub to include an architecture
specific header, a comment in the beginning says "This file is here to
prevent a file conflict on multiarch systems. A conflict will occur because
apr.h has arch-specific definitions." and it then goes on to
#if defined(__i386__)
#include "apr-i386.h"
[...]
#elif defined(__x86_64__)
#include "apr-x86_64.h"
[...]
#endif
apr-x86_64.h seems to be the "normal" generated apr.h from APR, with the
suitable arch-dependent defines, such as the substitution of
#define APR_SIZEOF_VOIDP @voidp_size@
I don't think RedHat's special-handling of the header is to blame here.
> By the way, all I did was restrict the -std=c99 to the MockHTTP sources;
> before this change, all the tests, including MockHTTP, used C99. So
> there's really no change in the context of that source file.
>
> -- Brane
>
I exported the compile commands (-DCMAKE_EXPORT_COMPILE_COMMANDS=ON) and
compared the command lines and there are differences in the command line:
[[[
--- compile_commands_r1926868.txt
+++ compile_commands_r1926869.txt
[...]
- "command": "/usr/bin/cc -DHAVE_STDBOOL_H=1 -DMOCKHTTP_OPENSSL
-DOPENSSL_NO_STDIO -DSERF_HAVE_BROTLI -DSERF_HAVE_BROTLI_DECODER_RESULT
-DSERF_HAVE_GSSAPI -DSERF_HAVE_OPENSSL_ALPN -DSERF_HAVE_OPENSSL_MALLOC_INIT
-DSERF_HAVE_OPENSSL_SSL_LIBRARY_INIT -DSERF_HAVE_OPENSSL_VERSION_NUM
-DSERF_HAVE_OSSL_HANDSHAKE_STATE -DSERF_HAVE_SSL_LOCKING_CALLBACKS
-I/home/dsg/serf_PR-8 -isystem /usr/include/apr-1.0 -Wall
-Wdeclaration-after-statement -Wmissing-prototypes -std=c99 -O3 -DNDEBUG
-DLINUX -D_REENTRANT -D_GNU_SOURCE -o
CMakeFiles/test_all.dir/MockHTTPinC/MockHTTP.c.o -c
/home/dsg/serf_PR-8/test/MockHTTPinC/MockHTTP.c",
[...]
+ "command": "/usr/bin/cc -DHAVE_STDBOOL_H=1 -DMOCKHTTP_OPENSSL
-DOPENSSL_NO_STDIO -DSERF_HAVE_BROTLI -DSERF_HAVE_BROTLI_DECODER_RESULT
-DSERF_HAVE_GSSAPI -DSERF_HAVE_OPENSSL_ALPN -DSERF_HAVE_OPENSSL_MALLOC_INIT
-DSERF_HAVE_OPENSSL_SSL_LIBRARY_INIT -DSERF_HAVE_OPENSSL_VERSION_NUM
-DSERF_HAVE_OSSL_HANDSHAKE_STATE -DSERF_HAVE_SSL_LOCKING_CALLBACKS -isystem
/usr/include/apr-1.0 -std=c99 -w -O3 -DNDEBUG -o
CMakeFiles/mockhttpinc.dir/MockHTTP.c.o -c
/home/dsg/serf_PR-8/test/MockHTTPinC/MockHTTP.c",
[...]
]]]
In the RockyLinux instance, it seems like adding -D_REENTRANT to the
command line helps.
$ rm -rf out; svn up -r1926869 && CFLAGS=-D_REENTRANT cmake -B out && cmake
--build out
[... succeeds ...]
I'm usually testing on Ubuntu 25.04 (under WSL) and after this revision, I
get the following error:
[[[
[ 88%] Built target serf_bwtp
[ 88%] Building C object
test/MockHTTPinC/CMakeFiles/mockhttpinc.dir/MockHTTP.c.o
/home/dsg/serf_PR-8/test/MockHTTPinC/MockHTTP.c: In function ‘methodToCode’:
/home/dsg/serf_PR-8/test/MockHTTPinC/MockHTTP.c:562:23: error: implicit
declaration of function ‘strcasecmp’; did you mean ‘strncmp’?
[-Wimplicit-function-declaration]
562 | if (ch1 == 'G' && strcasecmp(code, "GET") == 0)
| ^~~~~~~~~~
| strncmp
gmake[2]: *** [test/MockHTTPinC/CMakeFiles/mockhttpinc.dir/build.make:79:
test/MockHTTPinC/CMakeFiles/mockhttpinc.dir/MockHTTP.c.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:475:
test/MockHTTPinC/CMakeFiles/mockhttpinc.dir/all] Error 2
gmake: *** [Makefile:146: all] Error 2
]]]
With the same checks as above, it seems like -D_GNU_SOURCE makes the trick
for me:
$ rm -rf out; svn up -r1926869 && cmake -B out && cmake --build out
[...fails...]
$ rm -rf out; svn up -r1926869 && CFLAGS=-D_GNU_SOURCE cmake -B out &&
cmake --build out
[...succeeds...]
The same issue still exists in trunk@1926976.
I don't know CMake well enough to understand why _REENTRANT and _GNU_SOURCE
are added in the main CMakeLists.txt but not in the one in test/MockHTTPinC
- I don't seen anything obvious in Brane's change.
The failure in Ubuntu 25.04 is also possible to rectify by including
<strings.h> in MockHTTP.c.
Cheers,
Daniel
