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* data/c.m4 (b4_c_modern): New macro, with a new provision for _MSC_VER.

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(b4_c_function_def): Use it.
* data/yacc.c (YYMODERN_C): Remove.  All uses replaced by
b4_c_modern.
(yystrlen, yystpcpy, yyparse): Use b4_c_function... macros rather
than rolling our own.
This commit is contained in:
Paul Eggert
2006-01-04 23:35:43 +00:00
parent 8486615972
commit 1b9c21fb18
3 changed files with 37 additions and 45 deletions
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16
data/c.m4
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@@ -248,11 +248,25 @@ m4_define([b4_token_enums_defines],
## --------------------------------------------- ##
# b4_modern_c
# -----------
# A predicate useful in #if to determine whether C is ancient or modern.
#
# If __STDC__ is defined, the compiler is modern. IBM xlc 7.0 when run
# as 'cc' doesn't define __STDC__ (or __STDC_VERSION__) for pedantic
# reasons, but it defines __C99__FUNC__ so check that as well.
# Microsoft C normally doesn't define these macros, but it defines _MSC_VER.
# Consider a C++ compiler to be modern if it defines __cplusplus. */
#
m4_define([b4_c_modern],
[[defined (__STDC__) || defined (__C99__FUNC__) || \
defined (__cplusplus) || defined (_MSC_VER)]])
# b4_c_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
# ----------------------------------------------------------
# Declare the function NAME.
m4_define([b4_c_function_def],
[#if defined (__STDC__) || defined (__C99__FUNC__) || defined (__cplusplus)
[#if b4_c_modern
b4_c_ansi_function_def($@)
#else
$2