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bison.m4: support b4_*_if macros whose name differ from their variable

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* data/bison.m4 (b4_percent_define_if_define_, b4_percent_define_if_define):
Accept a second argument.
This commit is contained in:
Akim Demaille
2012-11-01 17:50:37 +01:00
parent 32288c8cbd
commit 62cb570a8d
1 changed files with 7 additions and 6 deletions
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13
data/bison.m4
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@@ -697,17 +697,18 @@ m4_define([b4_percent_define_default],
m4_define([b4_percent_define_syncline(]$1[)], [[]])])])
# b4_percent_define_if_define(VARIABLE)
# -------------------------------------
# Define b4_VARIABLE_if that executes its $1 or $2 depending whether
# b4_percent_define_if_define(NAME, [VARIABLE = NAME])
# ----------------------------------------------------
# Define b4_NAME_if that executes its $1 or $2 depending whether
# VARIABLE was %defined. The characters `.' and `-' in VARIABLE are mapped
# to `_'.
m4_define([b4_percent_define_if_define_],
[m4_define(m4_bpatsubst([b4_$1_if], [[-.]], [_]),
[b4_percent_define_flag_if([$1], [$2], [$3])])])
[b4_percent_define_flag_if(m4_default([$2], [$1]),
[$3], [$4])])])
m4_define([b4_percent_define_if_define],
[b4_percent_define_default([[$1]], [[false]])
b4_percent_define_if_define_([$1], $[1], $[2])])
[b4_percent_define_default([m4_default([$2], [$1])], [[false]])
b4_percent_define_if_define_([$1], [$2], $[1], $[2])])
# b4_percent_define_check_values(VALUES)