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require 'formula'
def TeX_installed?; return `which latex` != ''; end
class Asymptote < Formula
url 'http://downloads.sourceforge.net/asymptote/asymptote-2.08.src.tgz'
homepage 'http://asymptote.sourceforge.net/'
md5 'ab7bc11c8110b6eb459285b9c206cfe6'
depends_on 'readline'
depends_on 'bdw-gc'
def link_asy_texmfhome
texmfhome = `kpsewhich -var-value=TEXMFHOME`.chop
texmflocl = `kpsewhich -var-value=TEXMFLOCAL`.chop
asyhome = "#{texmfhome}/tex/latex/asymptote-brew"
asylocl = "#{texmflocl}/tex/latex/asymptote"
system "mkdir -p #{asyhome}"
for asyfile in ['asycolors.sty','asymptote.sty','ocg.sty','latexmkrc']
system "ln -s -f #{asylocl}/#{asyfile} #{asyhome}/#{asyfile}"
end
end
def install
unless TeX_installed?
onoe <<-EOS.undent
Asymptote requires a TeX/LaTeX installation; aborting now.
You can obtain the TeX distribution for Mac OS X from
http://www.tug.org/mactex/
EOS
exit 1
end
system "./configure", "--prefix=#{prefix}",
"--enable-gc=#{HOMEBREW_PREFIX}"
system "make install"
link_asy_texmfhome
end
def caveats
caveats = <<-EOS
1) This formula links the latest version of asymptote.sty into your user
texmf directory:
~/Library/texmf/tex/asymptote-brew/asymptote.sty
This file links back to where the Asymptote source installer puts it:
/usr/local/texlive/texmf-local/tex/latex/asymptote/asymptote.sty
Other users of your machine will not be able to use the source-installed
version of asymptote.sty unless they perform a similar linking operation;
e.g.,
mkdir -p ~/Library/texmf/tex/asymptote-brew/
ln -s /usr/local/texlive/texmf-local/tex/latex/asymptote/asymptote.sty ~/Library/texmf/tex/asymptote-brew/asymptote.sty
and similarly for asycolors.sty, ocg.sty, and latexmkrc.
If you are not using MacTeX / TeX Live or you have customised your TeX
distribution, the paths shown above may not match your particular system,
but you get the idea.
2) If you want to have Asymptote compiled with support for fftw or gsl
(fast fourier transforms or the GNU Scientific Library) they must be
manually installed first:
brew install fftw
brew install gsl
They are not compiled by default because they take a long time to compile
and they are not required by most users. (And they're not included in the
TeX Live build of Asymptote.)
3) If you wish to use xasy, you must first install the Python Imaging
Library (PIL):
easy_install http://effbot.org/downloads/Imaging-1.1.7.tar.gz
EOS
end
end
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