64bit: invalid ltdl library

[marco atzeri]

any idea ?

configure:21346: checking for lt_dladvise_preload in -lltdl
configure:21371: gcc -std=gnu99 -std=gnu99 -o conftest.exe  -fopenmp 
-ggdb -O2 -pipe 
-fdebug-prefix-map=/pub/devel/imagemagick/ImageMagick-6.7.6.3-3/build=/usr/src/debug/ImageMagick-6.7.6.3-3 
-fdebug-prefix-map=/pub/devel/imagemagick/ImageMagick-6.7.6.3-3/src/ImageMagick-6.7.6-3=/usr/src/debug/ImageMagick-6.7.6.3-3 
-Wall    conftest.c -lltdl    >&5
configure:21371: $? = 0
configure:21380: result: yes
configure:21427: error: invalid ltdl library directory: `/usr/lib'


$ ls -l /usr/lib/*ltd*
-rw-r--r-- 1 marco None 199770 Mar 31 07:14 /usr/lib/libltdl.a
-rwxr-xr-x 1 marco None  41902 Mar 31 07:14 /usr/lib/libltdl.dll.a

$ file /usr/lib/libltdl.dll.a
/usr/lib/libltdl.dll.a: current ar archive

Regards
Marco