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gnu: libpfm4: Fix build error. 

------
For some reason, the build recently failed with:

        pfmlib_perf_event_pmu.c:349:36: error: ?%s? directive output may be truncated writing up to 255 bytes into a region of size between 0 and 4095 [-Werror=format-truncation=]
          349 |   snprintf(d2path, MAXPATHLEN, "%s/%s", debugfs_mnt, d1->d_name);
              |                                    ^~
        pfmlib_perf_event_pmu.c:349:3: note: ?snprintf? output between 2 and 4352 bytes into a destination of size 4096
          349 |   snprintf(d2path, MAXPATHLEN, "%s/%s", debugfs_mnt, d1->d_name);
              |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        pfmlib_perf_event_pmu.c:399:58: error: ?%s? directive output may be truncated writing up to 255 bytes into a region of size between 0 and 4095 [-Werror=format-truncation=]
          399 |                         snprintf(idpath, MAXPATHLEN, "%s/%s/id", d2path, d2->d_name);
              |                                                          ^~
        pfmlib_perf_event_pmu.c:399:25: note: ?snprintf? output between 5 and 4355 bytes into a destination of size 4096
          399 |                         snprintf(idpath, MAXPATHLEN, "%s/%s/id", d2path, d2->d_name);
              |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        cc1: all warnings being treated as errors
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* gnu/packages/linux.scm (libpfm4)[arguments]: Add `-Wno-format-truncation` to
CFLAGS in custom 'build' phase.

Signed-off-by: Leo Famulari <leo@famulari.name>
master
Olivier Dion 2021-12-14 21:21:41 -05:00 committed by Leo Famulari
parent 9f955a1cfd
commit c7795eccaf
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gnu/packages/linux.scm
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@ -7632,6 +7632,7 @@ high-speed networking devices.")
(lambda* (#:key inputs outputs #:allow-other-keys)
(let* ((out (assoc-ref outputs "out")))
(setenv "CC" "gcc")
(setenv "CFLAGS" "-Wno-format-truncation")
(invoke "make")
#t)))
(replace 'install