diff options
Diffstat (limited to 'poky/meta/recipes-devtools/meson/meson/meson-setup.py')
-rwxr-xr-x | poky/meta/recipes-devtools/meson/meson/meson-setup.py | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/poky/meta/recipes-devtools/meson/meson/meson-setup.py b/poky/meta/recipes-devtools/meson/meson/meson-setup.py new file mode 100755 index 000000000..a9749eae9 --- /dev/null +++ b/poky/meta/recipes-devtools/meson/meson/meson-setup.py @@ -0,0 +1,62 @@ +#!/usr/bin/env python3 + +import os +import sys + +def bail(msg): + print(msg, file=sys.stderr) + sys.exit(1) + +_MARKER = '@@' +def transform_line(line): + # Substitute any special markers of this form: + # @@ENV@@ + # with the value of ENV, split into meson array syntax. + start = line.find(_MARKER) + if start == -1: + return line + + end = line.rfind(_MARKER) + if end == start: + return line + + # Lookup value of the env var. + var = line[start+len(_MARKER):end] + try: + val = os.environ[var] + except KeyError: + bail('cannot generate meson.cross; env var %s not set' % var) + + # Transform into meson array. + val = ["'%s'" % x for x in val.split()] + val = ', '.join(val) + val = '[%s]' % val + + before = line[:start] + after = line[end+len(_MARKER):] + + return '%s%s%s' % (before, val, after) + +# Make sure this is really an SDK extraction environment. +try: + sysroot = os.environ['OECORE_NATIVE_SYSROOT'] +except KeyError: + bail('OECORE_NATIVE_SYSROOT env var must be set') + +cross_file = os.path.join(sysroot, 'usr/share/meson/meson.cross') +tmp_cross_file = '%s.tmp' % cross_file + +# Read through and transform the current meson.cross. +lines = [] +with open(cross_file, 'r') as f: + for line in f: + lines.append(transform_line(line)) + +# Write the transformed result to a tmp file and atomically rename it. In case +# we crash during the file write, we don't want an invalid meson.cross file. +with open(tmp_cross_file, 'w') as f: + for line in lines: + f.write(line) + f.flush() + os.fdatasync(f.fileno()) +os.rename(tmp_cross_file, cross_file) |