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2c3840b563
test were suggested by Ian Taylor <ian@airs.com> and Joel did the hard part of putting it in aclocal and editting all the offending Makefiles and source code which could use this feature.
25 lines
573 B
Plaintext
25 lines
573 B
Plaintext
dnl
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dnl $Id$
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dnl
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dnl check for i386 gas supporting 16 bit mode
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dnl - binutils 2.9.1.0.7 and higher
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AC_DEFUN(RTEMS_I386_GAS_CODE16,
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if test "${target_cpu}" = "i386"; then
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AC_CACHE_CHECK([for 16 bit mode assembler support],
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rtems_cv_prog_gas_code16,
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[cat > conftest.s << EOF
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.code16
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data32 addr32 lgdt 0
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EOF
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if AC_TRY_COMMAND($AS_FOR_TARGET -o conftest.o conftest.s); then
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rtems_cv_prog_gas_code16=yes
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else
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rtems_cv_prog_gas_code16=no
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fi])
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RTEMS_GAS_CODE16="$rtems_cv_prog_gas_code16"
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fi
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)
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