From d6a195a3c373f67632cb98d6e6e14f974ef062f9 Mon Sep 17 00:00:00 2001 From: Zbigniew Jędrzejewski-Szmek Date: Fri, 18 Jan 2013 16:49:48 -0500 Subject: build-sys: add autoconf macro to pick macro for x32 compatibility --- m4/sd_check_max_int_size.m4 | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 m4/sd_check_max_int_size.m4 (limited to 'm4/sd_check_max_int_size.m4') diff --git a/m4/sd_check_max_int_size.m4 b/m4/sd_check_max_int_size.m4 new file mode 100644 index 0000000000..a4230b5ee8 --- /dev/null +++ b/m4/sd_check_max_int_size.m4 @@ -0,0 +1,27 @@ +dnl Find what INT_MAX define to use for a type + +#serial 1 + +ifdef([AC_TR_SH],[], [ +define([AC_TR_SH], + [patsubst(translit([[$1]], [*+], [pp]), [[^a-zA-Z0-9_]], [_])]) +define([AC_TR_CPP], + [patsubst(translit([[$1]], + [*abcdefghijklmnopqrstuvwxyz], + [PABCDEFGHIJKLMNOPQRSTUVWXYZ]), + [[^A-Z0-9_]], [_])]) +]) + +AC_DEFUN([SD_CHECK_MAX_INT_SIZE], + [AC_CHECK_SIZEOF([long],,) + AC_CHECK_SIZEOF([long long],,) + AC_CHECK_SIZEOF([$1],,[$2]) + AS_CASE([$ac_cv_sizeof_[]AC_TR_SH($1)], + [$ac_cv_sizeof_long], [sd_type_max=LONG_MAX], + [$ac_cv_sizeof_long_long], [sd_type_max=LONG_LONG_MAX], + [AC_MSG_ERROR([Don't know how to map $1 to an integer])]) + AC_DEFINE_UNQUOTED(AC_TR_CPP($1_MAX), [$sd_type_max], + [what int to use to maximize $1]) + AC_MSG_CHECKING([what int to to use to maximize $1]) + AC_MSG_RESULT([$sd_type_max]) +]) -- cgit v1.2.3-54-g00ecf