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Use one-dimension arrays in gen-posix-conf-vars.awk

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True multi-dimensional arrays were introduced in awk 4.0 and we
support awk versions as early as 3.12.  Use a single subscript of the
form prefix_conf instead of two dimensions to work around this
limitation.  We also need one additional array of just the conf names
subscripted by the prefix_conf to print the names for the
specifications.

	* scripts/gen-posix-conf-vars.awk: Don't use multi-dimensional
	arrays.
This commit is contained in:
Siddhesh Poyarekar
2014-12-31 13:22:58 +05:30
parent 7062bd4230
commit 195f3afcbe
2 changed files with 28 additions and 23 deletions
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ChangeLog
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@ -1,3 +1,8 @@
2014-12-31 Siddhesh Poyarekar <siddhesh@redhat.com>
* scripts/gen-posix-conf-vars.awk: Don't use multi-dimensional
arrays.
2014-12-30 H.J. Lu <hongjiu.lu@intel.com> 2014-12-30 H.J. Lu <hongjiu.lu@intel.com>
[BZ #17775] [BZ #17775]

46
scripts/gen-posix-conf-vars.awk
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@ -42,36 +42,36 @@ $1 == "}" {
# CONFSTR: A configuration string # CONFSTR: A configuration string
# SYSCONF: A numeric value # SYSCONF: A numeric value
# SPEC: A specification # SPEC: A specification
sc_prefixes[prefix][$1] = sc_prefix c = prefix "_" $1
conf[prefix][$1] = type sc_prefixes[c] = sc_prefix
prefix_conf[c] = type
conf[c] = $1
} }
END { END {
print "/* AUTOGENERATED by gen-posix-conf-vars.awk. DO NOT EDIT. */\n" print "/* AUTOGENERATED by gen-posix-conf-vars.awk. DO NOT EDIT. */\n"
# Generate macros that specify if a sysconf macro is defined and/or set. # Generate macros that specify if a sysconf macro is defined and/or set.
for (p in conf) { for (c in prefix_conf) {
for (c in conf[p]) { printf "#ifndef _%s\n", c
printf "#ifndef _%s_%s\n", p, c printf "# define CONF_DEF_%s CONF_DEF_UNDEFINED\n", c
printf "# define CONF_DEF_%s_%s CONF_DEF_UNDEFINED\n", p, c # CONFSTR have string values and they are not set or unset.
# CONFSTR have string values and they are not set or unset. if (prefix_conf[c] != "CONFSTR") {
if (conf[p][c] != "CONFSTR") { printf "#else\n"
printf "#else\n" printf "# if _%s > 0\n", c
printf "# if _%s_%s > 0\n", p, c printf "# define CONF_DEF_%s CONF_DEF_DEFINED_SET\n", c
printf "# define CONF_DEF_%s_%s CONF_DEF_DEFINED_SET\n", p, c printf "# else\n"
printf "# else\n" printf "# define CONF_DEF_%s CONF_DEF_DEFINED_UNSET\n", c
printf "# define CONF_DEF_%s_%s CONF_DEF_DEFINED_UNSET\n", p, c printf "# endif\n"
printf "# endif\n" }
} printf "#endif\n\n"
printf "#endif\n\n"
# Build a name -> sysconf number associative array to print a C array at # Build a name -> sysconf number associative array to print a C array at
# the end. # the end.
if (conf[p][c] == "SPEC") { if (prefix_conf[c] == "SPEC") {
name = sprintf ("%s_%s", p, c) name = sprintf ("%s", c)
num = sprintf ("%s_%s", sc_prefixes[p][c], c) num = sprintf ("%s_%s", sc_prefixes[c], conf[c])
spec[name] = num spec[name] = num
}
} }
} }