diff options
Diffstat (limited to 'gnulib-m4/gnulib-common.m4')
| -rw-r--r-- | gnulib-m4/gnulib-common.m4 | 304 |
1 files changed, 28 insertions, 276 deletions
diff --git a/gnulib-m4/gnulib-common.m4 b/gnulib-m4/gnulib-common.m4 index 40e82f6..4c7ac30 100644 --- a/gnulib-m4/gnulib-common.m4 +++ b/gnulib-m4/gnulib-common.m4 @@ -1,5 +1,5 @@ -# gnulib-common.m4 serial 36 -dnl Copyright (C) 2007-2015 Free Software Foundation, Inc. +# gnulib-common.m4 serial 20 +dnl Copyright (C) 2007-2010 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -12,25 +12,11 @@ AC_DEFUN([gl_COMMON], [ AC_REQUIRE([gl_COMMON_BODY]) ]) AC_DEFUN([gl_COMMON_BODY], [ - AH_VERBATIM([_Noreturn], -[/* The _Noreturn keyword of C11. */ -#if ! (defined _Noreturn \ - || (defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__)) -# if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \ - || 0x5110 <= __SUNPRO_C) -# define _Noreturn __attribute__ ((__noreturn__)) -# elif defined _MSC_VER && 1200 <= _MSC_VER -# define _Noreturn __declspec (noreturn) -# else -# define _Noreturn -# endif -#endif -]) AH_VERBATIM([isoc99_inline], [/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of earlier versions), but does not display it by setting __GNUC_STDC_INLINE__. - __APPLE__ && __MACH__ test for Mac OS X. + __APPLE__ && __MACH__ test for MacOS X. __APPLE_CC__ tests for the Apple compiler and its version. __STDC_VERSION__ tests for the C99 mode. */ #if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__ @@ -48,30 +34,6 @@ AC_DEFUN([gl_COMMON_BODY], [ /* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name is a misnomer outside of parameter lists. */ #define _UNUSED_PARAMETER_ _GL_UNUSED - -/* gcc supports the "unused" attribute on possibly unused labels, and - g++ has since version 4.5. Note to support C++ as well as C, - _GL_UNUSED_LABEL should be used with a trailing ; */ -#if !defined __cplusplus || __GNUC__ > 4 \ - || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) -# define _GL_UNUSED_LABEL _GL_UNUSED -#else -# define _GL_UNUSED_LABEL -#endif - -/* The __pure__ attribute was added in gcc 2.96. */ -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) -# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) -#else -# define _GL_ATTRIBUTE_PURE /* empty */ -#endif - -/* The __const__ attribute was added in gcc 2.95. */ -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) -# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__)) -#else -# define _GL_ATTRIBUTE_CONST /* empty */ -#endif ]) dnl Preparation for running test programs: dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not @@ -85,49 +47,16 @@ AC_DEFUN([gl_COMMON_BODY], [ # expands to a C preprocessor expression that evaluates to 1 or 0, depending # whether a gnulib module that has been requested shall be considered present # or not. -m4_define([gl_MODULE_INDICATOR_CONDITION], [1]) +AC_DEFUN([gl_MODULE_INDICATOR_CONDITION], [1]) # gl_MODULE_INDICATOR_SET_VARIABLE([modulename]) # sets the shell variable that indicates the presence of the given module to # a C preprocessor expression that will evaluate to 1. AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE], [ - gl_MODULE_INDICATOR_SET_VARIABLE_AUX( - [GNULIB_[]m4_translit([[$1]], - [abcdefghijklmnopqrstuvwxyz./-], - [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])], - [gl_MODULE_INDICATOR_CONDITION]) -]) - -# gl_MODULE_INDICATOR_SET_VARIABLE_AUX([variable]) -# modifies the shell variable to include the gl_MODULE_INDICATOR_CONDITION. -# The shell variable's value is a C preprocessor expression that evaluates -# to 0 or 1. -AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX], -[ - m4_if(m4_defn([gl_MODULE_INDICATOR_CONDITION]), [1], - [ - dnl Simplify the expression VALUE || 1 to 1. - $1=1 - ], - [gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([$1], - [gl_MODULE_INDICATOR_CONDITION])]) -]) - -# gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([variable], [condition]) -# modifies the shell variable to include the given condition. The shell -# variable's value is a C preprocessor expression that evaluates to 0 or 1. -AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR], -[ - dnl Simplify the expression 1 || CONDITION to 1. - if test "$[]$1" != 1; then - dnl Simplify the expression 0 || CONDITION to CONDITION. - if test "$[]$1" = 0; then - $1=$2 - else - $1="($[]$1 || $2)" - fi - fi + GNULIB_[]m4_translit([[$1]], + [abcdefghijklmnopqrstuvwxyz./-], + [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=gl_MODULE_INDICATOR_CONDITION ]) # gl_MODULE_INDICATOR([modulename]) @@ -173,40 +102,6 @@ AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], [Define to 1 when the gnulib module $1 should be tested.]) ]) -# gl_ASSERT_NO_GNULIB_POSIXCHECK -# asserts that there will never be a need to #define GNULIB_POSIXCHECK. -# and thereby enables an optimization of configure and config.h. -# Used by Emacs. -AC_DEFUN([gl_ASSERT_NO_GNULIB_POSIXCHECK], -[ - dnl Override gl_WARN_ON_USE_PREPARE. - dnl But hide this definition from 'aclocal'. - AC_DEFUN([gl_W][ARN_ON_USE_PREPARE], []) -]) - -# gl_ASSERT_NO_GNULIB_TESTS -# asserts that there will be no gnulib tests in the scope of the configure.ac -# and thereby enables an optimization of config.h. -# Used by Emacs. -AC_DEFUN([gl_ASSERT_NO_GNULIB_TESTS], -[ - dnl Override gl_MODULE_INDICATOR_FOR_TESTS. - AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], []) -]) - -# Test whether <features.h> exists. -# Set HAVE_FEATURES_H. -AC_DEFUN([gl_FEATURES_H], -[ - AC_CHECK_HEADERS_ONCE([features.h]) - if test $ac_cv_header_features_h = yes; then - HAVE_FEATURES_H=1 - else - HAVE_FEATURES_H=0 - fi - AC_SUBST([HAVE_FEATURES_H]) -]) - # m4_foreach_w # is a backport of autoconf-2.59c's m4_foreach_w. # Remove this macro when we can assume autoconf >= 2.60. @@ -222,90 +117,11 @@ m4_ifndef([AS_VAR_IF], [m4_define([AS_VAR_IF], [AS_IF([test x"AS_VAR_GET([$1])" = x""$2], [$3], [$4])])]) -# gl_PROG_CC_C99 -# Modifies the value of the shell variable CC in an attempt to make $CC -# understand ISO C99 source code. -# This is like AC_PROG_CC_C99, except that -# - AC_PROG_CC_C99 did not exist in Autoconf versions < 2.60, -# - AC_PROG_CC_C99 does not mix well with AC_PROG_CC_STDC -# <http://lists.gnu.org/archive/html/bug-gnulib/2011-09/msg00367.html>, -# but many more packages use AC_PROG_CC_STDC than AC_PROG_CC_C99 -# <http://lists.gnu.org/archive/html/bug-gnulib/2011-09/msg00441.html>. -# Remaining problems: -# - When AC_PROG_CC_STDC is invoked twice, it adds the C99 enabling options -# to CC twice -# <http://lists.gnu.org/archive/html/bug-gnulib/2011-09/msg00431.html>. -# - AC_PROG_CC_STDC is likely to change now that C11 is an ISO standard. -AC_DEFUN([gl_PROG_CC_C99], -[ - dnl Change that version number to the minimum Autoconf version that supports - dnl mixing AC_PROG_CC_C99 calls with AC_PROG_CC_STDC calls. - m4_version_prereq([9.0], - [AC_REQUIRE([AC_PROG_CC_C99])], - [AC_REQUIRE([AC_PROG_CC_STDC])]) -]) - -# gl_PROG_AR_RANLIB -# Determines the values for AR, ARFLAGS, RANLIB that fit with the compiler. -# The user can set the variables AR, ARFLAGS, RANLIB if he wants to override -# the values. -AC_DEFUN([gl_PROG_AR_RANLIB], -[ - dnl Minix 3 comes with two toolchains: The Amsterdam Compiler Kit compiler - dnl as "cc", and GCC as "gcc". They have different object file formats and - dnl library formats. In particular, the GNU binutils programs ar, ranlib - dnl produce libraries that work only with gcc, not with cc. - AC_REQUIRE([AC_PROG_CC]) - AC_CACHE_CHECK([for Minix Amsterdam compiler], [gl_cv_c_amsterdam_compiler], - [ - AC_EGREP_CPP([Amsterdam], - [ -#ifdef __ACK__ -Amsterdam -#endif - ], - [gl_cv_c_amsterdam_compiler=yes], - [gl_cv_c_amsterdam_compiler=no]) - ]) - if test -z "$AR"; then - if test $gl_cv_c_amsterdam_compiler = yes; then - AR='cc -c.a' - if test -z "$ARFLAGS"; then - ARFLAGS='-o' - fi - else - dnl Use the Automake-documented default values for AR and ARFLAGS, - dnl but prefer ${host}-ar over ar (useful for cross-compiling). - AC_CHECK_TOOL([AR], [ar], [ar]) - if test -z "$ARFLAGS"; then - ARFLAGS='cr' - fi - fi - else - if test -z "$ARFLAGS"; then - ARFLAGS='cr' - fi - fi - AC_SUBST([AR]) - AC_SUBST([ARFLAGS]) - if test -z "$RANLIB"; then - if test $gl_cv_c_amsterdam_compiler = yes; then - RANLIB=':' - else - dnl Use the ranlib program if it is available. - AC_PROG_RANLIB - fi - fi - AC_SUBST([RANLIB]) -]) - # AC_PROG_MKDIR_P # is a backport of autoconf-2.60's AC_PROG_MKDIR_P, with a fix # for interoperability with automake-1.9.6 from autoconf-2.62. # Remove this macro when we can assume autoconf >= 2.62 or # autoconf >= 2.60 && automake >= 1.10. -# AC_AUTOCONF_VERSION was introduced in 2.62, so use that as the witness. -m4_ifndef([AC_AUTOCONF_VERSION],[ m4_ifdef([AC_PROG_MKDIR_P], [ dnl For automake-1.9.6 && autoconf < 2.62: Ensure MKDIR_P is AC_SUBSTed. m4_define([AC_PROG_MKDIR_P], @@ -316,31 +132,27 @@ m4_ifdef([AC_PROG_MKDIR_P], [ [AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake MKDIR_P='$(mkdir_p)' AC_SUBST([MKDIR_P])])]) -]) # AC_C_RESTRICT -# This definition is copied from post-2.69 Autoconf and overrides the -# AC_C_RESTRICT macro from autoconf 2.60..2.69. It can be removed -# once autoconf >= 2.70 can be assumed. It's painful to check version -# numbers, and in practice this macro is more up-to-date than Autoconf -# is, so override Autoconf unconditionally. +# This definition overrides the AC_C_RESTRICT macro from autoconf 2.60..2.61, +# so that mixed use of GNU C and GNU C++ and mixed use of Sun C and Sun C++ +# works. +# This definition can be removed once autoconf >= 2.62 can be assumed. +m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.62]),[-1],[ AC_DEFUN([AC_C_RESTRICT], [AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict], [ac_cv_c_restrict=no # The order here caters to the fact that C++ does not require restrict. for ac_kw in __restrict __restrict__ _Restrict restrict; do - AC_COMPILE_IFELSE( - [AC_LANG_PROGRAM( - [[typedef int *int_ptr; - int foo (int_ptr $ac_kw ip) { return ip[0]; } - int bar (int [$ac_kw]); /* Catch GCC bug 14050. */ - int bar (int ip[$ac_kw]) { return ip[0]; } - ]], - [[int s[1]; - int *$ac_kw t = s; - t[0] = 0; - return foo (t) + bar (t); - ]])], + AC_COMPILE_IFELSE([AC_LANG_PROGRAM( + [[typedef int * int_ptr; + int foo (int_ptr $ac_kw ip) { + return ip[0]; + }]], + [[int s[1]; + int * $ac_kw t = s; + t[0] = 0; + return foo(t)]])], [ac_cv_c_restrict=$ac_kw]) test "$ac_cv_c_restrict" != no && break done @@ -350,21 +162,21 @@ AC_DEFUN([AC_C_RESTRICT], nothing if this is not supported. Do not define if restrict is supported directly. */ #undef restrict -/* Work around a bug in Sun C++: it does not support _Restrict or - __restrict__, even though the corresponding Sun C compiler ends up with - "#define restrict _Restrict" or "#define restrict __restrict__" in the - previous line. Perhaps some future version of Sun C++ will work with - restrict; if so, hopefully it defines __RESTRICT like Sun C does. */ +/* Work around a bug in Sun C++: it does not support _Restrict, even + though the corresponding Sun C compiler does, which causes + "#define restrict _Restrict" in the previous line. Perhaps some future + version of Sun C++ will work with _Restrict; if so, it'll probably + define __RESTRICT, just as Sun C does. */ #if defined __SUNPRO_CC && !defined __RESTRICT # define _Restrict -# define __restrict__ #endif]) case $ac_cv_c_restrict in restrict) ;; no) AC_DEFINE([restrict], []) ;; *) AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;; esac -])# AC_C_RESTRICT +]) +]) # gl_BIGENDIAN # is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd. @@ -387,63 +199,3 @@ AC_DEFUN([gl_CACHE_VAL_SILENT], AC_CACHE_VAL([$1], [$2]) as_echo_n="$saved_as_echo_n" ]) - -# AS_VAR_COPY was added in autoconf 2.63b -m4_define_default([AS_VAR_COPY], -[AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])]) - -# AC_PROG_SED was added in autoconf 2.59b -m4_ifndef([AC_PROG_SED], -[AC_DEFUN([AC_PROG_SED], -[AC_CACHE_CHECK([for a sed that does not truncate output], ac_cv_path_SED, - [dnl ac_script should not contain more than 99 commands (for HP-UX sed), - dnl but more than about 7000 bytes, to catch a limit in Solaris 8 /usr/ucb/sed. - ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/ - for ac_i in 1 2 3 4 5 6 7; do - ac_script="$ac_script$as_nl$ac_script" - done - echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed - AS_UNSET([ac_script]) - if test -z "$SED"; then - ac_path_SED_found=false - _AS_PATH_WALK([], [ - for ac_prog in sed gsed; do - for ac_exec_ext in '' $ac_executable_extensions; do - ac_path_SED="$as_dir/$ac_prog$ac_exec_ext" - AS_EXECUTABLE_P(["$ac_path_SED"]) || continue - case `"$ac_path_SED" --version 2>&1` in - *GNU*) ac_cv_path_SED=$ac_path_SED ac_path_SED_found=:;; - *) - ac_count=0 - _AS_ECHO_N([0123456789]) >conftest.in - while : - do - cat conftest.in conftest.in >conftest.tmp - mv conftest.tmp conftest.in - cp conftest.in conftest.nl - echo >> conftest.nl - "$ac_path_SED" -f conftest.sed <conftest.nl >conftest.out 2>/dev/null || break - diff conftest.out conftest.nl >/dev/null 2>&1 || break - ac_count=`expr $ac_count + 1` - if test $ac_count -gt ${ac_path_SED_max-0}; then - # Best so far, but keep looking for better - ac_cv_path_SED=$ac_path_SED - ac_path_SED_max=$ac_count - fi - test $ac_count -gt 10 && break - done - rm -f conftest.in conftest.tmp conftest.nl conftest.out;; - esac - $ac_path_SED_found && break 3 - done - done]) - if test -z "$ac_cv_path_SED"; then - AC_ERROR([no acceptable sed could be found in \$PATH]) - fi - else - ac_cv_path_SED=$SED - fi - SED="$ac_cv_path_SED" - AC_SUBST([SED])dnl - rm -f conftest.sed -])])]) |