[GRASS-user] Configure error: liblas not found

[Rich Shepard]

Here, on Slackware-14.2, libLAS is installed: libLAS-1.8.1-x86_64-1_SBo.
When trying to configure the 7.9.dev source it fails here:
checking whether to use libLAS... yes
checking for liblas-config... /usr/bin/liblas-config
checking for liblas/capi/liblas.h... yes
configure: error: *** Unable to locate libLAS library.

My configuration file contains:
./configure \
--enable-64bit \
--with-libs=/usr/lib64 \
--with-postgres \
--with-postgres-includes=/usr/include/postgresql/server/ \
--with-postgres-libs=/usr/lib64/postgresql/11/lib/ \
--with-sqlite \
--with-sqlite-includes=/usr/include/ \
--with-sqlite-libs=/usr/lib/ \
--with-cairo \
--with-blas \
--with-lapack \
--with-freetype \
--with-freetype-includes=/usr/include/freetype2 \
--with-cxx \
--with-geos \
--with-gdal \
--with-nls \
--with-python3 \
--with-pthread \
--with-proj-share=/usr/share/proj \
--with-wxwidgets \
--enable-largefile \
--with-openmp \
--with-liblas \
--with-x

I've not before needed to specify a separate libLAS library path as there
installed:
/usr/lib64/liblas.so@
/usr/lib64/liblas.so.2.4.0*
/usr/lib64/liblas.so.3@
/usr/lib64/liblas_c.so@
/usr/lib64/liblas_c.so.2.4.0*
/usr/lib64/liblas_c.so.3@

Please advise me how to fix this configuration error.

TIA,

Rich