<div dir="ltr">Hi,<div><br></div><div>static libraries don't pull in dependencies automatically. Thus this error.</div><div>We could </div><div>1) Skip the check whether we can link the library (check_library_exists) if the library is static. Then if the library which was found is not OK (e.g. 32bit instead of 64bit, or host instead of Phi) then the user will only get a error at the end of the build.</div>
<div>2) Do the same as we do in FindFFTW and manually add the dependencies before check_library_exists:</div><div><div> if (HAVE_LIBM)</div><div> #adding MATH_LIBRARIES here to allow static libs, this does not harm us as we are anyway using it</div>
<div> set(CMAKE_REQUIRED_LIBRARIES m)</div><div> endif ()</div></div><div><br></div><div>Roland</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Jul 2, 2014 at 3:35 PM, Szilárd Páll <span dir="ltr"><<a href="mailto:pall.szilard@gmail.com" target="_blank">pall.szilard@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
I'm having trouble getting libxml2 detection pass with<br>
-DGMX_PREFER_STATIC_LIBS=ON with 5.0 release.<br>
<br>
I keep getting:<br>
-- Found LibXml2: /usr/lib/x86_64-linux-gnu/libxml2.a (found version "2.7.8")<br>
-- Looking for xmlTextWriterEndAttribute in /usr/lib/x86_64-linux-gnu/libxml2.a<br>
-- Looking for xmlTextWriterEndAttribute in<br>
/usr/lib/x86_64-linux-gnu/libxml2.a - not found<br>
<br>
even though:<br>
nm -g /usr/lib/x86_64-linux-gnu/libxml2.a | grep -i xmlTextWriterEndAttribute<br>
0000000000001090 T xmlTextWriterEndAttribute<br>
<br>
It looks like the trouble is caused by some linking order issue<br>
because I see this in the CMakeError.log:<br>
<br>
/usr/bin/gcc-4.8 -Wno-maybe-uninitialized -Wextra<br>
-Wno-missing-field-initializers -Wno-sign-compare -Wpointer<br>
-arith -Wall -Wno-unused -Wunused-value -Wunused-parameter<br>
-DCHECK_FUNCTION_EXISTS=xmlTextWriterEndAttribute<br>
CMakeFiles/cmTryCompileExec3409173216.dir/CheckFunctionExists.c.o<br>
-o cmTryCompileExec3409173216 -rdynamic<br>
-Wl,-Bstatic -lxml2 -Wl,-Bdynamic<br>
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libxml2.a(xmlIO.o):<br>
In function `xmlGzfileOpenW':<br>
(.text+0x253): undefined reference to `gzdopen'<br>
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libxml2.a(xmlIO.o):<br>
In function `xmlGzfileOpenW':<br>
(.text+0x285): undefined reference to `gzopen64'<br>
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libxml2.a(xmlIO.o):<br>
In function `xmlFreeZMemBuff':<br>
(.text+0x2f8): undefined reference to `deflateEnd'<br>
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libxml2.a(xmlIO.o):<br>
In function `xmlGzfileClose':<br>
(.text+0x995): undefined reference to `gzclose'<br>
<br>
... and so one with all kinds of libz and even math.h functions listed.<br>
<br>
Any idea what's going on?<br>
<br>
Cheers,<br>
--<br>
Szilárd<br>
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