Mercurial > hg > octave-lojdl > gnulib-hg
changeset 4513:c5ffba0b61b5
Add 'restrict' module.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Thu, 07 Aug 2003 19:33:14 +0000 |
parents | c761847c9afa |
children | 4dd0a6b3033d |
files | ChangeLog MODULES.html.sh m4/ChangeLog m4/regex.m4 m4/restrict.m4 modules/regex modules/restrict |
diffstat | 7 files changed, 74 insertions(+), 1 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2003-08-07 Paul Eggert <eggert@twinsun.com> + + * modules/restrict: New file. + * MODULES.html.sh (func_all_modules): Add restrict. + * modules/regex: Depend on restrict. + 2003-08-07 Bruno Haible <bruno@clisp.org> * modules/getndelim2 (Makefile.am): Add the files to EXTRA_DIST, not
--- a/MODULES.html.sh +++ b/MODULES.html.sh @@ -1593,6 +1593,16 @@ func_wrap H2 func_echo "$element" + element="Keywords" + element=`printf "%s" "$element" | sed -e "$sed_lt" -e "$sed_gt"` + func_section_wrap isoc_sup_keywords + func_wrap H3 + func_echo "$element" + + func_begin_table + func_module restrict + func_end_table + element="Boolean type and values <stdbool.h>" element=`printf "%s" "$element" | sed -e "$sed_lt" -e "$sed_gt"` func_section_wrap isoc_sup_stdbool
--- a/m4/ChangeLog +++ b/m4/ChangeLog @@ -1,3 +1,8 @@ +2003-08-07 Paul Eggert <eggert@twinsun.com> + + * restrict.m4: New file. + * regex.m4 (jm_PREREQ_REGEX): Add gl_C_RESTRICT. + 2003-08-07 Bruno Haible <bruno@clisp.org> * getndelim2.m4 (gl_GETNDELIM2): Use AC_LIBOBJ(getndelim2). This makes
--- a/m4/regex.m4 +++ b/m4/regex.m4 @@ -1,4 +1,4 @@ -#serial 17 +#serial 18 dnl Initially derived from code in GNU grep. dnl Mostly written by Jim Meyering. @@ -110,6 +110,7 @@ dnl Persuade glibc <string.h> to declare mempcpy(). AC_REQUIRE([AC_GNU_SOURCE]) + AC_REQUIRE([gl_C_RESTRICT]) AC_REQUIRE([AC_FUNC_ALLOCA]) AC_REQUIRE([AC_HEADER_STDC]) AC_CHECK_HEADERS_ONCE(limits.h string.h wchar.h wctype.h)
new file mode 100644 --- /dev/null +++ b/m4/restrict.m4 @@ -0,0 +1,33 @@ +#serial 1002 +# This macro can be removed once we can rely on Autoconf 2.57a or later, +# since we can then use its AC_C_RESTRICT. + +# gl_C_RESTRICT +# -------------- +# Determine whether the C/C++ compiler supports the "restrict" keyword +# introduced in ANSI C99, or an equivalent. Do nothing if the compiler +# accepts it. Otherwise, if the compiler supports an equivalent, +# define "restrict" to be that. Here are some variants: +# - GCC supports both __restrict and __restrict__ +# - older DEC Alpha C compilers support only __restrict +# - _Restrict is the only spelling accepted by Sun WorkShop 6 update 2 C +# Otherwise, define "restrict" to be empty. +AC_DEFUN([gl_C_RESTRICT], +[AC_CACHE_CHECK([for C/C++ restrict keyword], gl_cv_c_restrict, + [gl_cv_c_restrict=no + # Try the official restrict keyword, then gcc's __restrict, and + # the less common variants. + for ac_kw in restrict __restrict __restrict__ _Restrict; do + AC_COMPILE_IFELSE([AC_LANG_SOURCE( + [float * $ac_kw x;])], + [gl_cv_c_restrict=$ac_kw; break]) + done + ]) + case $gl_cv_c_restrict in + restrict) ;; + no) AC_DEFINE(restrict,, + [Define to equivalent of C99 restrict keyword, or to nothing if this + is not supported. Do not define if restrict is supported directly.]) ;; + *) AC_DEFINE_UNQUOTED(restrict, $gl_cv_c_restrict) ;; + esac +])