[GRASS-dev] configurare fails: Failed check for math library

[Nicklas Larsson]

Another thought, configure fails at locating the math library which is part of standard C library. If not installed, you’ll probably need `glibc`.

> On 24 Jan 2024, at 14:00, Nicklas Larsson via grass-dev <grass-dev at lists.osgeo.org> wrote:
> 
> Martin,
> 
> Noting that you use a non-default prefix, you may need to add `LDFLAGS="-L/usr/lib”` (and perhaps add ´”-I/usr/include” to CFLAGS and CXXFLAGS).
> The same result could perhaps be reached with `--with-includes=/usr/include --with-libs=/usr/lib` added to configure, although that I’m not sure of.
> 
> 
> Best,
> Nicklas
> 
> 
> 
>> On 24 Jan 2024, at 13:34, Martin Landa via grass-dev <grass-dev at lists.osgeo.org> wrote:
>> 
>> Hi, 
>> 
>> I am unable to compile GRASS on Debian testing. The configure fails with:
>> 
>> checking for atan... no
>> checking for atan in -lm... no
>> configure: error: *** Failed check for math library.
>> 
>> I installed dependencies by
>> 
>> apt build-dep grass
>> 
>> and run
>> 
>>         CFLAGS="-g -Wall -Werror -fno-common -Wextra -Wunused" \
>>    CXXFLAGS="-g -Wall"  \
>>    ./configure --prefix=/opt/grass \
>>             --enable-largefile --enable-shared \
>>             --with-blas --with-bzlib --with-cairo --with-cxx --with-freetype \
>>             --with-freetype-includes=/usr/include/freetype2 --with-gdal \
>>             --with-geos --with-lapack --with-netcdf --with-nls \
>>             --with-odbc --with-openmp --with-pdal=no \
>>             --with-postgres --with-postgres-includes=/usr/include/postgresql \
>>             --with-proj-share=/usr/share/proj --with-readline \
>>             --with-sqlite --with-x --with-zstd
>> 
>> Any idea what could be wrong? Thanks in advance, Martin
>> 
>> --
>> Martin Landa
>> http://geo.fsv.cvut.cz/gwiki/Landa
>> http://gismentors.cz/mentors/landa
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> 
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