meson.build: Check if Perl is required for building documentation

New versions of mm-common use the Python scripts doc_postprocess.py and doc_install.py instead of the Perl scripts doc-postprocess.pl and doc-install.pl when documentation is built.

meson.build: Check if Perl is required for building documentation
ec5f5d5e · Kjell Ahlstedt · a1612e79 · ec5f5d5e · ec5f5d5e
Commit ec5f5d5e authored 3 years ago by Kjell Ahlstedt
--- a/meson.build
+++ b/meson.build
@@ -140,7 +140,6 @@ if maintainer_mode and not mm_common_get.found()
  mm_common_get = find_program('mm-common-get', required: true)
 endif

-perl = find_program('perl', required: build_documentation)
 doxygen = find_program('doxygen', required: build_documentation)
 dot = find_program('dot', required: build_documentation) # Used by Doxygen
 xsltproc = find_program('xsltproc', required: build_documentation)
@@ -168,7 +167,7 @@ dist_changelog_py = script_dir / 'dist-changelog.py'
 dist_build_scripts_py = script_dir / 'dist-build-scripts.py'

 if maintainer_mode
-  # Copy files to untracked/build_scripts and untracked/docs/docs.
+  # Copy files to untracked/build_scripts and untracked/docs.
  run_command(mm_common_get, '--force', script_dir,
    project_source_root / 'untracked' / 'docs')
 else
@@ -184,6 +183,16 @@ sys.exit(os.path.isfile("@0@"))
  endif
 endif

+# Check if perl is required and available.
+doc_perl_prop = run_command(
+  python3, doc_reference_py, 'get_script_property',
+  '', # MMDOCTOOLDIR is not used
+  'requires_perl')
+if not (doc_perl_prop.returncode() == 0 and doc_perl_prop.stdout() == 'false')
+  # Perl is required, if documentation shall be built.
+  perl = find_program('perl', required: build_documentation)
+endif
+
 # Set compiler warnings.
 warning_flags = []
 if warning_level == 'min'

--- a/untracked/README
+++ b/untracked/README
@@ -15,8 +15,8 @@ or the tarball is created with Meson.

 1. Files copied by mm-common-get
 --------------------------------
-untracked/docs/doc-install.pl
-               doc-postprocess.pl
+untracked/docs/doc_install.py or doc-install.pl
+               doc_postprocess.py or doc-postprocess.pl
               doxygen-extra.css
               tagfile-to-devhelp2.xsl
 untracked/build_scripts/dist-build-scripts.py