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Diffstat (limited to 'm4/cares-override.m4')
-rw-r--r-- | m4/cares-override.m4 | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/m4/cares-override.m4 b/m4/cares-override.m4 new file mode 100644 index 0000000..101ca61 --- /dev/null +++ b/m4/cares-override.m4 @@ -0,0 +1,111 @@ +#*************************************************************************** +# $Id$ +#*************************************************************************** + +# File version for 'aclocal' use. Keep it a single number. +# serial 4 + +dnl CARES_OVERRIDE_AUTOCONF +dnl ------------------------------------------------- +dnl Placing a call to this macro in configure.ac after +dnl the one to AC_INIT will make macros in this file +dnl visible to the rest of the compilation overriding +dnl those from Autoconf. + +AC_DEFUN([CARES_OVERRIDE_AUTOCONF], [ +AC_BEFORE([$0],[AC_PROG_LIBTOOL]) +# using cares-override.m4 +]) + +dnl Override some Libtool tests +dnl ------------------------------------------------- +dnl This is done to prevent Libtool 1.5.X from doing +dnl unnecesary C++, Fortran and Java tests and reduce +dnl resulting configure script by nearly 300 Kb. + +m4_define([AC_LIBTOOL_LANG_CXX_CONFIG],[:]) +m4_define([AC_LIBTOOL_LANG_F77_CONFIG],[:]) +m4_define([AC_LIBTOOL_LANG_GCJ_CONFIG],[:]) + +dnl Override Autoconf's AC_LANG_PROGRAM (C) +dnl ------------------------------------------------- +dnl This is done to prevent compiler warning +dnl 'function declaration isn't a prototype' +dnl in function main. This requires at least +dnl a c89 compiler and does not suport K&R. + +m4_define([AC_LANG_PROGRAM(C)], +[$1 +int main (void) +{ +$2 + ; + return 0; +}]) + +dnl Override Autoconf's AC_LANG_CALL (C) +dnl ------------------------------------------------- +dnl This is a backport of Autoconf's 2.60 with the +dnl embedded comments that hit the resulting script +dnl removed. This is done to reduce configure size +dnl and use fixed macro across Autoconf versions. + +m4_define([AC_LANG_CALL(C)], +[AC_LANG_PROGRAM([$1 +m4_if([$2], [main], , +[ +#ifdef __cplusplus +extern "C" +#endif +char $2 ();])], [return $2 ();])]) + +dnl Override Autoconf's AC_LANG_FUNC_LINK_TRY (C) +dnl ------------------------------------------------- +dnl This is a backport of Autoconf's 2.60 with the +dnl embedded comments that hit the resulting script +dnl removed. This is done to reduce configure size +dnl and use fixed macro across Autoconf versions. + +m4_define([AC_LANG_FUNC_LINK_TRY(C)], +[AC_LANG_PROGRAM( +[ +#define $1 innocuous_$1 +#ifdef __STDC__ +# include <limits.h> +#else +# include <assert.h> +#endif +#undef $1 +#ifdef __cplusplus +extern "C" +#endif +char $1 (); +#if defined __stub_$1 || defined __stub___$1 +choke me +#endif +], [return $1 ();])]) + +dnl Override Autoconf's PATH_SEPARATOR check +dnl ------------------------------------------------- +dnl This is done to ensure that the same check is +dnl used across different Autoconf versions and to +dnl allow us to use this macro early enough in the +dnl configure script. + +m4_defun([_AS_PATH_SEPARATOR_PREPARE], +[CARES_CHECK_PATH_SEPARATOR +m4_define([$0],[])]) + +m4_defun([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR], +[CARES_CHECK_PATH_SEPARATOR +m4_define([$0],[])]) + +dnl Override Autoconf's AC_CONFIG_MACRO_DIR (DIR) +dnl ------------------------------------------------- +dnl This is an emulation of Autoconf's 2.61 macro. +dnl This is done to use fixed macro across Autoconf +dnl versions, and avoid warnings from modern libtool +dnl which traces usage of this macro. + +AC_DEFUN([AC_CONFIG_MACRO_DIR],[:]) + |