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    <div class="moz-cite-prefix">I am not sure if there is anything that
      strange.<br>
      See 
      <a class="moz-txt-link-freetext" href="https://dev.openwrt.org/browser/trunk/include/prereq-build.mk#L27">https://dev.openwrt.org/browser/trunk/include/prereq-build.mk#L27</a><br>
      <br>
      'gcc' basically just checks that gcc exists. (check that it
      responds to 'gcc --version' command)<br>
      'working-gcc' checks if gcc actually can compile anything. It
      tries to compile an one-line program.<br>
      The later five failing tests also depend on a working gcc. <br>
      <br>
      If you are really interested, check the test command from lines
      39-40 manually:<br>
       echo 'int main(int argc, char **argv) { return 0; }' | gcc -x c
      -o $(TMP_DIR)/a.out -<br>
      <br>
      Manually running it might give a better error message.<br>
      <br>
      <br>
      On 9.11.2015 19:18, Carlos Ferreira wrote:<br>
    </div>
    <blockquote
cite="mid:CAJpYY6VPhoV1kbQ+y4J5puXeZ0BS6=qSFDpxLnPi-E7zW7d3ZQ@mail.gmail.com"
      type="cite">
      <div dir="ltr">The weirdest part is this.<br>
        <br>
        <div>Checking 'gcc'... ok.</div>
        <div>Checking 'working-gcc'... failed.</div>
        <div>Checking 'g++'... ok.</div>
        <div>Checking 'working-g++'... failed.</div>
        <div>Checking 'ncurses'... failed.</div>
        <div>Checking 'zlib'... failed.</div>
        <div>Checking 'libssl'... failed.</div>
        <div><br>
          <br>
          GCC and G++ checks out but the tests implemented in <a
            moz-do-not-send="true" href="http://prereq-build.mk">prereq-build.mk</a>
          (working-gcc and working-g++) seem to fail.<br>
          I too believe this was triggered by a recent OS update.<br>
          <br>
        </div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On 9 November 2015 at 17:14, Carlos
          Ferreira <span dir="ltr"><<a moz-do-not-send="true"
              href="mailto:carlosmf.pt@gmail.com" target="_blank">carlosmf.pt@gmail.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">For reference, I'm using Manjaro Linux (Arch
              Linux based).<br>
              <br>
              <div>[claymore@Claymore trunk]$ uname -a</div>
              <div>Linux Claymore 4.3.0-1-MANJARO #1 SMP PREEMPT Mon Nov
                2 07:40:28 UTC 2015 x86_64 GNU/Linux</div>
              <div><br>
              </div>
            </div>
            <div class="gmail_extra">
              <div>
                <div class="h5"><br>
                  <div class="gmail_quote">On 9 November 2015 at 16:42,
                    Hannu Nyman <span dir="ltr"><<a
                        moz-do-not-send="true"
                        href="mailto:hannu.nyman@iki.fi" target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:hannu.nyman@iki.fi">hannu.nyman@iki.fi</a></a>></span>
                    wrote:<br>
                    <blockquote class="gmail_quote" style="margin:0 0 0
                      .8ex;border-left:1px #ccc solid;padding-left:1ex">One
                      more "me too" report:<br>
                      There was probably something unusual in the last
                      OS kernel update for Ubuntu 15.10 x64, which has
                      caused some compiler tools to require
                      re-installation.<br>
                      <br>
                      I updated Ubuntu 15.10 kernel last week along
                      other updates offered by the system, and after the
                      kernel update I ran a command to purge old
                      kernels, like I always do after kernel updates. At
                      that point I noticed that exceptionally also a few
                      of the build tools/prerequisities of Openwrt got
                      uninstalled at the same time. Almost like there
                      had been a forced dependency to the previous
                      kernel version. Normally only the old kernel
                      modules are purged, so this looked strange.<br>
                      <br>
                      I re-installed the Openwrt prerequisities
                      (gcc-multilib, flex, git-core, gettext,
                      libssl-dev, ...). Not all of those needed
                      re-installation, but some did. So some of them had
                      been really uninstalled. Since then the things
                      have been normal again.<br>
                      <br>
                      Your situation pretty much matches what I would
                      probably have seen if I had not re-installed the
                      prerequisities.<br>
                      Just try reinstalling the ~20 prerequisities for
                      Openwrt and see if that helps.<br>
                      <br>
                      I don't think that this has anything to do with
                      Openwrt itself.<span><br>
                      </span><br>
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          </blockquote>
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