1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
# option-groups.awk --- generate option group header file
# Given input files containing makefile-style assignments to variables,
# print out a header file that #defines an appropriate preprocessor
# symbol for each variable left set to 'y'.
BEGIN { FS="=" }
# Trim spaces.
{ gsub (/[[:blank:]]/, "") }
# Skip comments.
/^#/ { next }
# Process assignments.
NF == 2 {
vars[$1] = $2
}
# Print final values.
END {
print "/* This file is automatically generated by scripts/option-groups.awk"
print " in the EGLIBC source tree."
print ""
print " It defines macros that indicate which EGLIBC option groups were"
print " configured in 'option-groups.config' when this C library was"
print " built. For each option group named OPTION_foo, it #defines"
print " __OPTION_foo to be 1 if the group is enabled, or leaves that"
print " symbol undefined if the group is disabled. */"
print ""
print "#ifndef __GNU_OPTION_GROUPS_H"
print "#define __GNU_OPTION_GROUPS_H"
print ""
# Produce a sorted list of variable names.
i=0
for (var in vars)
names[i++] = var
n = asort (names)
for (i = 1; i <= n; i++)
{
var = names[i]
if (var ~ /^OPTION_/)
{
if (vars[var] == "y")
print "#define __" var " 1"
else if (vars[var] == "n")
print "/* #undef __" var " */"
# Ignore variables that don't have boolean values.
# Ideally, this would be driven by the types given in
# option-groups.def.
}
}
print ""
print "#endif /* __GNU_OPTION_GROUPS_H */"
}
|
