diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/gen-posix-conf-vars.awk | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/scripts/gen-posix-conf-vars.awk b/scripts/gen-posix-conf-vars.awk index 16e20fc100..0eca55d536 100644 --- a/scripts/gen-posix-conf-vars.awk +++ b/scripts/gen-posix-conf-vars.awk @@ -15,12 +15,19 @@ $1 ~ /^#/ || $0 ~ /^\s*$/ { $NF == "{" { type = $1 prefix = $2 + + if (NF == 4) + sc_prefix = $3 + else + sc_prefix = "_SC" + next } $1 == "}" { prefix = "" type = "" + sc_prefix = "" next } @@ -35,6 +42,7 @@ $1 == "}" { # CONFSTR: A configuration string # SYSCONF: A numeric value # SPEC: A specification + sc_prefixes[prefix][$1] = sc_prefix conf[prefix][$1] = type } @@ -56,6 +64,26 @@ END { printf "# endif\n" } printf "#endif\n\n" + + # Build a name -> sysconf number associative array to print a C array at + # the end. + if (conf[p][c] == "SPEC") { + name = sprintf ("%s_%s", p, c) + num = sprintf ("%s_%s", sc_prefixes[p][c], c) + spec[name] = num + } } } + + # Print the specification array. Define the macro NEED_SPEC_ARRAY before + # including posix-conf-vars.h to make it available in the compilation unit. + print "#if NEED_SPEC_ARRAY" + print "static const struct { const char *name; int num; } specs[] =" + print " {" + for (s in spec) { + printf " { \"%s\", %s },\n", s, spec[s] + } + print " };" + print "static const int nspecs = sizeof (specs) / sizeof (specs[0]);" + print "#endif" } |