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<div class="moz-cite-prefix">For some reason you have to link pq
after everything else. It doesn't do this with sqlite or mysql.<br>
<br>
david@ubuntu:~/Projects/UrShop$ gcc -Werror -pthread
-L/usr/local/lib -lurweb_http -lurweb /tmp/webapp.o -lpq -lm
-lcrypto -lssl -o /home/david/Projects/UrShop/urshop.exe -g
/home/david/Projects/UrShop/lib/sha.o<br>
/usr/bin/ld: /usr/local/lib/liburweb.so: undefined reference to
symbol '<a class="moz-txt-link-abbreviated" href="mailto:SHA256_Init@@OPENSSL_1.0.0">SHA256_Init@@OPENSSL_1.0.0</a>'<br>
/usr/bin/ld: note: '<a class="moz-txt-link-abbreviated" href="mailto:SHA256_Init@@OPENSSL_1.0.0">SHA256_Init@@OPENSSL_1.0.0</a>' is defined in DSO
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libcrypto.so
so try adding it to the linker command line<br>
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libcrypto.so:
could not read symbols: Invalid operation<br>
collect2: ld returned 1 exit status<br>
<br>
<br>
david@ubuntu:~/Projects/UrShop$ gcc -Werror -pthread
-L/usr/local/lib -lurweb_http -lurweb /tmp/webapp.o -lm -lcrypto
-lssl -lpq -o /home/david/Projects/UrShop/urshop.exe -g
/home/david/Projects/UrShop/lib/sha.o<br>
<br>
<br>
On 10/20/2012 09:03 AM, Adam Chlipala wrote:<br>
</div>
<blockquote cite="mid:5082A116.2080800@csail.mit.edu" type="cite">
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On 10/20/2012 08:54 AM, David Snider wrote:
<blockquote cite="mid:50829F1B.80508@davidsnider.net" type="cite">
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<pre class="lang-c prettyprint"><code><span class="pun">I'm trying to make a C FFI that returns the SHA256 of a string and this is what I get when I try to compile with my library added:
david@ubuntu:~/Projects/UrShop$ urweb urshop
/usr/bin/ld: /usr/local/lib/liburweb.so: undefined reference to symbol '<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:SHA256_Init@@OPENSSL_1.0.0">SHA256_Init@@OPENSSL_1.0.0</a>'
/usr/bin/ld: note: '<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:SHA256_Init@@OPENSSL_1.0.0">SHA256_Init@@OPENSSL_1.0.0</a>' is defined in DSO /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libcrypto.so so try adding it to the linker command line
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/libcrypto.so: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
What step am I missing?</span></code>
</pre>
</blockquote>
<br>
Run 'urweb' with the '-debug' option and then tweak the gcc
command
lines it uses until they work. Once you figure out what was
wrong, I
can comment on the right way to get 'urweb' itself to use
different
command lines.<br>
<br>
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</pre>
</blockquote>
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