build,meson: make bash-completion file install optional

`mbimcli` provides a bash-completion file. To install this file
`bash-completion`'s pkg-file is checked to set the proper
installation directory.

This has been made optional.

4 files changed, 26 insertions, 9 deletions

diff --git a/meson.build b/meson.build
index 26a6714..53a7d9d 100644
--- a/meson.build
+++ b/meson.build
@@ -21,6 +21,7 @@ mbim_micro_version = version_array[2].to_int()
 
 mbim_prefix = get_option('prefix')
 mbim_bindir = get_option('bindir')
+mbim_datadir = get_option('datadir')
 mbim_includedir = get_option('includedir')
 mbim_libexecdir = get_option('libexecdir')
 mbim_mandir = get_option('mandir')
@@ -138,7 +139,15 @@ glib_deps = declare_dependency(
   compile_args: c_flags,
 )
 
-bash_completion_completionsdir = dependency('bash-completion').get_pkgconfig_variable('completionsdir', define_variable: ['prefix', mbim_prefix])
+enable_bash_completion = get_option('bash_completion')
+if enable_bash_completion
+  bash_completion_dep = dependency('bash-completion')
+  bash_completion_completionsdir = bash_completion_dep.get_pkgconfig_variable(
+    'completionsdir',
+    # bash-completion 2.10 changed the substitutions
+    define_variable: bash_completion_dep.version().version_compare('>= 2.10') ? ['datadir', mbim_datadir] : ['prefix', mbim_prefix],
+  )
+endif
 
 glib_prefix = glib_dep.get_pkgconfig_variable('prefix')
 
@@ -191,7 +200,7 @@ configure_file(
 meson.add_install_script(
   'meson_post_install.py',
   get_option('bindir'),
-  bash_completion_completionsdir,
+  enable_bash_completion ? bash_completion_completionsdir : '',
 )
 
 output = '\n' + meson.project_name() + ' ' + meson.project_version() + '\n\n'
@@ -199,6 +208,7 @@ output += '  Build\n'
 output += '    compiler:              ' + cc.get_id() + '\n'
 output += '    cflags:                ' + ' '.join(cc_flags) + '\n'
 output += '    Documentation:         ' + enable_gtk_doc.to_string() + '\n'
+output += '    bash completion:       ' + enable_bash_completion.to_string() + '\n'
 output += '    gobject introspection: ' + enable_gir.to_string() + '\n\n'
 output += '  System paths\n'
 output += '    prefix:                ' + mbim_prefix + '\n'
diff --git a/meson_options.txt b/meson_options.txt
index db87a7f..462c638 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -4,3 +4,5 @@ option('udevdir', type: 'string', value: '', description: 'where udev base direc
 
 option('introspection', type: 'boolean', value: true, description: 'build introspection support')
 option('gtk_doc', type: 'boolean', value: false, description: 'use gtk-doc to build documentation')
+
+option('bash_completion', type: 'boolean', value: true, description: 'install bash completion files')
diff --git a/meson_post_install.py b/meson_post_install.py
index fbf40fa..a130623 100644
--- a/meson_post_install.py
+++ b/meson_post_install.py
@@ -9,6 +9,9 @@ prefix = os.environ['MESON_INSTALL_DESTDIR_PREFIX']
 bindir = os.path.join(prefix, sys.argv[1])
 subprocess.check_call(['chmod', '755', os.path.join(bindir, 'mbim-network')])
 
-bash_completion_completionsdir = os.path.join(prefix, sys.argv[2])
-os.rename(os.path.join(bash_completion_completionsdir, 'mbimcli-completion'),
-          os.path.join(bash_completion_completionsdir, 'mbimcli'))
+bash_completion_completionsdir = sys.argv[2]
+if bash_completion_completionsdir:
+    if not os.path.isabs(bash_completion_completionsdir):
+        bash_completion_completionsdir = os.path.join(prefix, bash_completion_completionsdir)
+    os.rename(os.path.join(bash_completion_completionsdir, 'mbimcli-completion'),
+              os.path.join(bash_completion_completionsdir, 'mbimcli'))
diff --git a/src/mbimcli/meson.build b/src/mbimcli/meson.build
index df42c96..672c87b 100644
--- a/src/mbimcli/meson.build
+++ b/src/mbimcli/meson.build
@@ -32,7 +32,9 @@ mbimcli = executable(
   install: true,
 )
 
-install_data(
-  'mbimcli-completion',
-  install_dir: bash_completion_completionsdir,
-)
+if enable_bash_completion
+  install_data(
+    'mbimcli-completion',
+    install_dir: bash_completion_completionsdir,
+  )
+endif