newlib-cygwin/newlib/libc/machine/arm/configure.in

dnl This is the newlib/libc/machine/arm configure.in file.
dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.59)
AC_INIT([newlib],[NEWLIB_VERSION])
AC_CONFIG_SRCDIR([Makefile.am])

dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake. 
AC_CONFIG_AUX_DIR(../../../..)

NEWLIB_CONFIGURE(../../..)

dnl Check for Thumb1 supported.
AC_CACHE_CHECK(whether we are using thumb1,
	       acnewlib_cv_thumb1_processor, [dnl
cat > conftest.c <<EOF

#if defined (__thumb__) && !defined (__thumb2__)
  #define _THUMB1
 #else
  #error "not thumb1"
#endif
int main () {
  return 0;
}
EOF
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
							1>&AS_MESSAGE_LOG_FD])
then
  acnewlib_cv_thumb1_processor=yes;
else
  acnewlib_cv_thumb1_processor=no;
fi
rm -f conftest*])

AM_CONDITIONAL(HAVE_THUMB1, test x"$acnewlib_cv_thumb1_processor" = x"yes")

dnl Check for whether the size is preferred.
AC_CACHE_CHECK(whether the size is preferred,
	       acnewlib_cv_opt_size, [dnl
cat > conftest.c <<EOF

#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED)
  #define OPT_SIZE
 #else
  #error "not need for size optimization."
#endif
int main () {
  return 0;
}
EOF
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
							1>&AS_MESSAGE_LOG_FD])
then
  acnewlib_cv_opt_size=yes;
else
  acnewlib_cv_opt_size=no;
fi
rm -f conftest*])

AM_CONDITIONAL(OPT_SIZE, test x"$acnewlib_cv_opt_size" = x"yes")

dnl Check for whether ARM_7 or ARM_ARCH_6T2 is defined.
dnl This macro is used to support memchr() for old CPU.
AC_CACHE_CHECK(whether armv7 processor is supported,
	       acnewlib_cv_armv7_processor, [dnl
cat > conftest.c <<EOF

#if defined (_ISA_ARM_7) || defined (__ARM_ARCH_6T2__)
  #define HAVE_ARMV7
 #else
  #error "ARMV7 is not supported."
#endif
int main () {
  return 0;
}
EOF
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
							1>&AS_MESSAGE_LOG_FD])
then
  acnewlib_cv_armv7_processor=yes;
else
  acnewlib_cv_armv7_processor=no;
fi
rm -f conftest*])

AM_CONDITIONAL(HAVE_ARMV7, test x"$acnewlib_cv_armv7_processor" = x"yes")

dnl Check for whether ARM_ARCH_7A is defined.
AC_CACHE_CHECK(whether armv7a processor is supported,
	       acnewlib_cv_armv7a_processor, [dnl
cat > conftest.c <<EOF

#if defined (__ARM_ARCH_7A__) && defined (__ARM_FEATURE_UNALIGNED)
  #define HAVE_ARMV7A
 #else
  #error "ARMV7A is not supported."
#endif
int main () {
  return 0;
}
EOF
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
							1>&AS_MESSAGE_LOG_FD])
then
  acnewlib_cv_armv7a_processor=yes;
else
  acnewlib_cv_armv7a_processor=no;
fi
rm -f conftest*])

AM_CONDITIONAL(HAVE_ARMV7A, test x"$acnewlib_cv_armv7a_processor" = x"yes")

dnl Check for whether ARM_ARCH_7M is defined.
AC_CACHE_CHECK(whether armv7m processor is supported,
	       acnewlib_cv_armv7m_processor, [dnl
cat > conftest.c <<EOF

#if defined (__ARM_ARCH_7M__) || defined (__ARM_ARCH_7EM__)
  #define HAVE_ARMV7M
 #else
  #error "ARMV7M is not supported."
#endif
int main () {
  return 0;
}
EOF
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
							1>&AS_MESSAGE_LOG_FD])
then
  acnewlib_cv_armv7m_processor=yes;
else
  acnewlib_cv_armv7m_processor=no;
fi
rm -f conftest*])

AM_CONDITIONAL(HAVE_ARMV7M, test x"$acnewlib_cv_armv7m_processor" = x"yes")

AC_SUBST(CFLAGS)

AC_CONFIG_FILES([Makefile])
AC_OUTPUT