Dirk Eddelbuettel a écrit : > On 18 December 2007 at 12:03, Aurelien Jarno wrote: > | Package: libgsl0ldbl > | Version: 1.10-2 > | Severity: serious > | > | libgsl is using symbols from libcblas.so, but is not linked with it. That > | breaks at link time when -Wl,--as-needed is used, which is now the > | default for programs using qmake. > > AFAIK that that is a feature as the _binaries_ building against GSL can use > Atlas or the native blas:
How is that practically done? Does both libraries have the same ABI? > [EMAIL PROTECTED]:~> ldd /usr/bin/gsl-histogram > libgsl.so.0 => /usr/lib/libgsl.so.0 (0xb7def000) > libgslcblas.so.0 => /usr/lib/libgslcblas.so.0 (0xb7dbd000) > libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb7d97000) > libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb7c4a000) > /lib/ld-linux.so.2 (0xb7fd5000) > [EMAIL PROTECTED]:~> ldd -r /usr/bin/gsl-histogram > libgsl.so.0 => /usr/lib/libgsl.so.0 (0xb7dc5000) > libgslcblas.so.0 => /usr/lib/libgslcblas.so.0 (0xb7d93000) > libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb7d6d000) > libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb7c20000) > /lib/ld-linux.so.2 (0xb7fab000) The problem does not appear at runtime, but at link time. > Also note > > [EMAIL PROTECTED]:~> gsl-config --libs > -L/usr/lib -lgsl -lgslcblas -lm > [EMAIL PROTECTED]:~> Unfortunately it is not enough when built with -Wl,--as-needed. If the binaries does not uses any cblas symbol, the link fails. See for example bug#456872. > Isn't what you're asking for is sticking libgslcblas back into GSL? Upstream > would disagree. If gsl uses symbols from cblas, it has to be linked with it. In case you want to be able to use two different implementations of blas, I guess the best is too ship two flavour of gsl. -- .''`. Aurelien Jarno | GPG: 1024D/F1BCDB73 : :' : Debian developer | Electrical Engineer `. `' [EMAIL PROTECTED] | [EMAIL PROTECTED] `- people.debian.org/~aurel32 | www.aurel32.net -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
