configure_file: Add output_format kwarg (#3636)

* configure_file: Add output_format kwarg

* docs: Reference-manual.md output_format was added in 0.47 [skip ci]

1 files changed, 27 insertions, 9 deletions

diff --git a/mesonbuild/mesonlib.py b/mesonbuild/mesonlib.py
index fe426c5..6a38479 100644
--- a/mesonbuild/mesonlib.py
+++ b/mesonbuild/mesonlib.py
@@ -634,28 +634,46 @@ def do_conf_file(src, dst, confdata, format):
     replace_if_different(dst, dst_tmp)
     return missing_variables
 
-def dump_conf_header(ofilename, cdata):
-    ofilename_tmp = ofilename + '~'
-    with open(ofilename_tmp, 'w', encoding='utf-8') as ofile:
-        ofile.write('''/*
+CONF_C_PRELUDE = '''/*
  * Autogenerated by the Meson build system.
  * Do not edit, your changes will be lost.
  */
 
 #pragma once
 
-''')
+'''
+
+CONF_NASM_PRELUDE = '''; Autogenerated by the Meson build system.
+; Do not edit, your changes will be lost.
+
+'''
+
+def dump_conf_header(ofilename, cdata, output_format):
+    if output_format == 'c':
+        prelude = CONF_C_PRELUDE
+        prefix = '#'
+    elif output_format == 'nasm':
+        prelude = CONF_NASM_PRELUDE
+        prefix = '%'
+
+    ofilename_tmp = ofilename + '~'
+    with open(ofilename_tmp, 'w', encoding='utf-8') as ofile:
+        ofile.write(prelude)
         for k in sorted(cdata.keys()):
             (v, desc) = cdata.get(k)
             if desc:
-                ofile.write('/* %s */\n' % desc)
+                if output_format == 'c':
+                    ofile.write('/* %s */\n' % desc)
+                elif output_format == 'nasm':
+                    for line in desc.split('\n'):
+                        ofile.write('; %s\n' % line)
             if isinstance(v, bool):
                 if v:
-                    ofile.write('#define %s\n\n' % k)
+                    ofile.write('%sdefine %s\n\n' % (prefix, k))
                 else:
-                    ofile.write('#undef %s\n\n' % k)
+                    ofile.write('%sundef %s\n\n' % (prefix, k))
             elif isinstance(v, (int, str)):
-                ofile.write('#define %s %s\n\n' % (k, v))
+                ofile.write('%sdefine %s %s\n\n' % (prefix, k, v))
             else:
                 raise MesonException('Unknown data type in configuration file entry: ' + k)
     replace_if_different(ofilename, ofilename_tmp)