[RFC PATCH] configure: Create sh.config based on Makefile.config data

[Tomi Ollila]

Read Makefile.config and when line matches var = val assignment
create _var='val' from it. var must match [a-zA-Z_][a-zA-Z0-9_]*
and val [^'\]* ('\' usually meaning multiline assignments).

Write these lines to sh.config.

sh.config can then be used e.g. in test scripts.
---
 configure | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure b/configure
index 9bde2eb72b0e..feb0e480f86a 100755
--- a/configure
+++ b/configure
@@ -935,3 +935,8 @@ CONFIGURE_CXXFLAGS = -DHAVE_GETLINE=\$(HAVE_GETLINE) \$(GMIME_CFLAGS)    \\
 
 CONFIGURE_LDFLAGS =  \$(GMIME_LDFLAGS) \$(TALLOC_LDFLAGS) \$(ZLIB_LDFLAGS) \$(XAPIAN_LDFLAGS)
 EOF
+
+# Create sh.config based on Makefile.config values.
+# Output will be _var='val', val not containing ' nor \ (skipping multiline).
+sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\) *= *\([^\\'\'']*\)$/_\1='\''\2'\''/p' \
+	Makefile.config > sh.config
-- 
1.8.0