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Re: [libcvd-members] Lapack configure.in issue
From: |
Simon Taylor |
Subject: |
Re: [libcvd-members] Lapack configure.in issue |
Date: |
Tue, 17 Jun 2008 14:29:22 +0100 |
User-agent: |
Thunderbird 2.0.0.9 (X11/20071031) |
A better fix, though still a bit hacky, is to check for a different
lapack function in each AC_CHECK_LIB line. This stops previous cached
results from being reused.
Diff to configure.in attached. The functions I chose were picked fairly
arbitrarily from a list of LAPACK functions I found on the net, and
checked were in my LAPACK.so using nm, so feel free to change them for
other ones/come up with some other solution.
Simon
Simon Taylor wrote:
When updating CVD, configure didn't correctly work out that on my box
-lgfortran is required for lapack.
I "fixed" it for me by moving the CHECK_FOR_LIBRARY with APPEND(LIBS,
-lgfortran) to the top of the lapack checks in configure.in. I think
what's going wrong is that all of the lapack checks have the identical
AC_CHECK_LIB(lapack, dgesvd_, [], [a=1]) line, the result of which seems
to get cached after the first time it's encountered.
I don't speak autoconf/bash very well, so thought I'd leave it for
someone more qualified to look at...
Simon
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Index: configure.in
===================================================================
RCS file: /sources/libcvd/libcvd/configure.in,v
retrieving revision 1.126
diff -u -8 -p -r1.126 configure.in
--- configure.in 13 Jun 2008 16:58:44 -0000 1.126
+++ configure.in 17 Jun 2008 13:23:29 -0000
@@ -599,38 +599,38 @@ CHECK_FOR_LIBRARY(lapack, [
CHECK_FOR_LIBRARY(lapack, [
AC_MSG_CHECKING(if Accelerate framework is needed for LAPACK)
AC_MSG_RESULT()
APPEND(LIBS, -framework Accelerate)
AC_CHECK_FUNC(dgesvd_, [], [a=1])
])
CHECK_FOR_LIBRARY(lapack, [
- AC_CHECK_LIB(lapack, dgesvd_, [], [a=1])
+ AC_CHECK_LIB(lapack, dgesv_, [], [a=1])
])
CHECK_FOR_LIBRARY(lapack, [
AC_MSG_CHECKING(if f2c is needed for LAPACK)
AC_MSG_RESULT()
APPEND(LIBS, -lf2c)
- AC_CHECK_LIB(lapack, dgesvd_, [], [a=1])
+ AC_CHECK_LIB(lapack, dgesdd_, [], [a=1])
])
CHECK_FOR_LIBRARY(lapack, [
AC_MSG_CHECKING(if f2c is needed for LAPACK)
AC_MSG_RESULT()
APPEND(LIBS, -lg2c)
- AC_CHECK_LIB(lapack, dgesvd_, [], [a=1])
+ AC_CHECK_LIB(lapack, dgeev_, [], [a=1])
])
CHECK_FOR_LIBRARY(lapack, [
AC_MSG_CHECKING(if f2c is needed for LAPACK)
AC_MSG_RESULT()
APPEND(LIBS, -lgfortran)
- AC_CHECK_LIB(lapack, dgesvd_, [], [a=1])
+ AC_CHECK_LIB(lapack, dgees_, [], [a=1])
])
CHECK_FOR_LIBRARY(pthread, [
APPEND(CXXFLAGS, -pthread)
APPEND(LIBS, -pthread)
AC_MSG_CHECKING(for working pthreads)
AC_COMPILE_IFELSE([#include <pthread.h>
void*foo(void*){}
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