I'm trying to install GTK-DFB and cairo is a requirement. When I try to build it from source, it throws:
checking for cairo's PNG functions feature...
configure: WARNING: Could not find libpng in the pkg-config search path
checking whether cairo's PNG functions feature could be enabled... no
configure: error: recommended PNG functions feature could not be enabled
Ideas?
Thanks
For me it helped to export the following variable in the shell:
export png_REQUIRES="libpng"
Credit to this post
You need to have the libpng development packages installed; Installation is distribution dependent, but for debian derivatives following should be enough:
apt-get install libpng12-dev
If you're on Ubuntu, another much faster solution is to do:
apt-get build-dep gtk+2.0
Related
I first installed Open Babel through brew. When I tried to run the command: "obabel -:"CC(=O)Cl" -opng -O mymol.png", I got this error message: " Open Babel Error in PNG Format
PNG2Format not found. Probably the Cairo library is not loaded." I then proceeded to use brew to uninstall Open Babel. Then, I installed Cairo with brew and then installed Open Babel with brew again. Still though, I try to create a PNG output and it gives me the same error message. I just do not know what's going on??
I’ve found that when using brew to install open-babel, I do not need to install Cairo in a separate step. The open-babel formula includes a '--with-cairo’ option that installs all the required dependencies, including Cairo.
Here is how I installed open-babel with Cairo support:
$ brew install --with-cairo open-babel
I'm trying to install Octave 4 from source code in CentOS 7 but I got the warning messages:
configure: WARNING: OpenGL libs (GL and GLU) not found. Native graphics will be disabled.
configure: WARNING: OpenGL libs (GL and GLU) not found -- disabling GUI
configure: WARNING:
configure: WARNING: I didn't find the necessary libraries to compile native
configure: WARNING: graphics. It isn't necessary to have native graphics,
configure: WARNING: but you will need to have gnuplot installed or you won't
configure: WARNING: be able to use any of Octave's plotting commands
configure: WARNING:
configure:
configure: NOTE: Libraries or auxiliary programs may be skipped if they are
configure: NOTE: not found OR if they are missing required features on your
configure: NOTE: system.
I have checked this QUESTION but it didn't help.
I have also done yum install libqt4-opengl-dev but got an error No package libqt4-opengl-dev available.
I have got mesa-libGL and mesa-libGL-devel, but it seems like the configure cannot pick up these libraries.
Edit: answer to my own question
please see comments below the question.
I know that it's an old question, but I wanted to leave it in case if someone is still looking for an easy way of installing Octave 4.x.
The easiest way to install Octave 4 is to use Flatpack. It's installed by default in CentOS 7.
flatpak install flathub org.octave.Octave
flatpak run org.octave.Octave
If you're using Red Hat you need to install flatpak it first:
sudo yum install flatpak
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
Problem/Introduction:
I'm trying to install Mapnik on Centos 7. I've had about a year UNIX experience in the professional environment, but I am still very much a beginner. I've compiled and installed boost which to my knowledge comes with ICU C++ Libraries. Unfortunately when I run ./configure for Mapnik installation I get the following error:
Exiting... the following required dependencies were not found:
- icuuc (ICU C++ library | configure with ICU_LIBS & ICU_INCLUDES or use ICU_LIB_NAME to specify custom lib name | more info: http://site.icu-project.org/)
How do I install this library? I can't find any good internet resources, or maybe I'm looking in the wrong places.
Thanks in advance.
yum install freetype-devel libtool-ltdl-devel libpng-devel libtiff-devel libjpeg-devel gcc-c++ libicu-devel python-devel bzip2-devel boost libwebp-devel libtiff-devel libjpeg-turbo-devel libpng-devel sqlite-devel gdal-devel gdal-python
wget https://mapnik.s3.amazonaws.com/dist/v3.0.10/mapnik-v3.0.10.tar.bz2
tar -xf ./mapnik-v3.0.10.tar.bz2
cd ./mapnik-v3.0.10/
./configure
make && make install
Mapnik v3.0.10 needs Boost of minimum version v1.56
CentOS 7 is shipped with version v1.53
I am trying to stream jpgs using Motion JPEG streamer. I need to install package libv41-dev as a required library and when I install sudo apt-get install libv41-dev, I get Unable to locate package libv41-dev error. Why can't locate that package? I searched in google for that libv41-dev, not much information has come out. That library is required for linux/videodev.h file. Thanks
The library is libv4l-dev. You can install using the command
sudo apt-get install libv4l-dev
Make sure it’s not libv41 it’s libv4l ( letter l )
I am trying to install Poststat on debian squeeze.
http://poststat.projects.postgresql.org
This project looks not so old (2008), but I am having some difficulties to install it. Although it seems to be a really interesting project, google is empty. I'll try here to sum up what I did (postgres 8.4 is installed) :
apt-get install fort77 postgresql-server-dev-8.4 libblas-dev liblapack-dev gfortran
First, as it is said on the official website, unpack the tar.gz and go in the directory f77stat and 'make'.
Then if you have libpq-dev installed, on debian squeeze it install also its owns pg_config in /usr/bin/ wich report false infos. (see http://postgresql.1045698.n5.nabble.com/Bug-report-Wrong-version-in-pg-config-td2123792.html)
One solution :
mv /usr/bin/pg_config pg_config_bak
ln -s /usr/lib/postgresql/8.4/bin/pg_config pg_config
This is important because the makefile of Poststat is retrieving some info with pg_config.
Then in the main Makefile there is the line :
-lblas -llapack -lg2c
Install those package for blas and lapack :
apt-get install libatlas-base-dev libatlas-dev libatlas-doc libatlas3gf-base
Now my problem is about g2c. According to google, g2c is obsolete so I edited the Makefile and replace -lg2c with -lgfortrant
Last step :
compile and import the new statitics functions in my database.
make && sudo make install
psql -f poststat.sql <database>
Sadly,
psql:poststat.sql:18: ERROR: unable to load the library
« /usr/lib/postgresql/8.4/lib/poststat.so » : /usr/lib/postgresql/8.4/lib/poststat.so:
undefined symbol: s_stop
Any thought ? fortran is not my world, and packages seem to have change a lot in debian about fortran. My switch from -lg2c to -lgfortrant is probably wrong. In fact removing this include does at the end produce the same error.
libg2c belongs to the g77 (http://stackoverflow.com/questions/2406581/what-is-libg2c-library), which is obsolete and unsupported for many years. Switching to a more current compiler involves more than just replacing this library. You need to replace the compiler also, e.g., gfortran. You might need to change the default compiler options of gfortran to be able to compile FORTRAN 77 code. I use: -O2 -ffixed-form -ffixed-line-length-none. If you use gfortran as the linker you won't need to explicitly include the fortran run-time library.
change -lg2c by -lf2c
Add to poststat.c , at the end
int MAIN__(){
return (0);
}