From ce30cc7716b6d57bcfd7fe2f7485baa0df99b091 Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Sun, 25 Feb 2007 01:57:58 +0000 Subject: [PATCH] Correct handling of ARM when cross-compiling. --- m4/isnan.m4 | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/m4/isnan.m4 b/m4/isnan.m4 index f065a5010..5bb133d0d 100644 --- a/m4/isnan.m4 +++ b/m4/isnan.m4 @@ -92,14 +92,17 @@ int main () [gl_cv_cc_double_expbit0=`cat conftest.out`], [gl_cv_cc_double_expbit0="unknown"], [ - dnl On ARM, integer types are stored in little-endian byte order, - dnl but floats are stored in big-endian word order. + dnl On ARM, there are two 'double' floating-point formats, used by + dnl different sets of instructions: The older FPA instructions assume + dnl that they are stored in big-endian word order, while the words + dnl (like integer types) are stored in little-endian byte order. + dnl The newer VFP instructions assume little-endian order consistenly. AC_EGREP_CPP([mixed_endianness], [ #if defined arm || defined __arm || defined __arm__ mixed_endianness #endif ], - [gl_cv_cc_double_expbit0="word 0 bit 20"], + [gl_cv_cc_double_expbit0="unknown"], [ AC_C_BIGENDIAN( [gl_cv_cc_double_expbit0="word 0 bit 20"], -- 2.11.0