Hi Derek,

On 04/03/2026 10:44, Derek Logan wrote:
Hi all,

I've been trying to install coot-1.1.20 via homebrew and always get stuck with 
an error related to clipper (see below for details). The script says that it 
can't find the file libccp4c.pc. How can I fix this? The closest thing I can 
find is libccp4c.8.0.dylib in ccp4-9/lib, but that's not the right file and I 
thought that homebrew was supposed to be self-contained? I have run brew 
update, brew upgrade and brew install coot --HEAD. Any advice would be 
gratefully received!


==> Installing coot from brewsci/bio
==> ./autogen.sh
==> ./configure --with-enhanced-ligand-tools --with-boost=/usr/local/opt/boost 
--with-boost-libdir=/usr/local/opt/boost/lib --with-gemmi=/usr/local/opt/gemmi 
--with-glm=/usr/loc
Last 15 lines from /Users/derekl/Library/Logs/Homebrew/coot/02.configure.log:
checking for ssm... yes
checking for non-prefixed single-precision FFTW2 (fftw.h)... yes

This should have been taken care of for you. Hmm.

Do these exist?

/opt/homebrew/lib/pkgconfig/libccp4c.pc

/opt/homebrew/lib/pkgconfig/ccp4c.pc

Paul


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