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fltk: add explicit dependency on gl and a variant to activate it (#22761)

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* The fltk package can build libraries with opengl support. By default, the configure script looks for opengl headers in the sytem include paths. If 'devel' packages have not been installed on the system it omits the 'ftlk_gl.so' library. This can break packages like 'octave' which expects 'fltk' to have opengl support and looks for the library 'fltk_gl'.

Make opengl support explicit in fltk by adding a dependency on 'gl' and adding a new variant of the same name 'gl' (default On).

With these modifications 'fltk_gl' and 'octave' build successfully on CentOS8.

The default behavior is to always enable opengl.

https://www.fltk.org/doc-1.3/intro.html
This commit is contained in:
Amiya Maji 2021-04-06 03:45:00 -04:00 committed by GitHub
parent 8dab9f0a81
commit 7e6386803e
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var/spack/repos/builtin/packages/fltk/package.py
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@ -38,6 +38,12 @@ class Fltk(Package):
variant('shared', default=True, variant('shared', default=True,
description='Enables the build of shared libraries') description='Enables the build of shared libraries')
variant('gl', default=True,
description='Enables opengl support')
# variant dependencies
depends_on('gl', when='+gl')
def install(self, spec, prefix): def install(self, spec, prefix):
options = ['--prefix=%s' % prefix, options = ['--prefix=%s' % prefix,
'--enable-localjpeg', '--enable-localjpeg',
@ -47,6 +53,9 @@ def install(self, spec, prefix):
if '+shared' in spec: if '+shared' in spec:
options.append('--enable-shared') options.append('--enable-shared')
if '~gl' in spec:
options.append('--disable-gl')
# FLTK needs to be built in-source # FLTK needs to be built in-source
configure(*options) configure(*options)
make() make()