else
$1="${ncn_target_tool_prefix}[$]2"
fi], [$1="$3"])
+else
+ $1="$ac_cv_prog_$1"
fi
]) []dnl # NCN_STRICT_CHECK_TARGET_TOOLS
fi
elif test $build != $host && test $have_gcc_for_target = yes; then
$1=`$GCC_FOR_TARGET --print-prog-name=$2`
- test [$]$1=$2 && $1=
- ac_cv_path_$1=[$]$1
+ test [$]$1 = $2 && $1=
+ test -n "[$]$1" && ac_cv_path_$1=[$]$1
fi
fi
if test -z "$ac_cv_path_$1" && test -n "$gcc_cv_tool_dirs"; then
# Test for GNAT.
# We require the gnatbind program, and a compiler driver that
-# understands Ada. We use the user's CC setting, already found.
+# understands Ada. We use the user's CC setting, already found,
+# and possibly add $1 to the command-line parameters.
#
# Sets the shell variable have_gnat to yes or no as appropriate, and
# substitutes GNATBIND and GNATMAKE.
# Other compilers, like HP Tru64 UNIX cc, exit successfully when
# given a .adb file, but produce no object file. So we must check
# if an object file was really produced to guard against this.
-errors=`(${CC} -c conftest.adb) 2>&1 || echo failure`
+errors=`(${CC} $1[]m4_ifval([$1], [ ])-c conftest.adb) 2>&1 || echo failure`
if test x"$errors" = x && test -f conftest.$ac_objext; then
acx_cv_cc_gcc_supports_ada=yes
fi
AC_SUBST(REPORT_BUGS_TO)
AC_SUBST(REPORT_BUGS_TEXI)
])
+
+dnl ####
+dnl # ACX_CHECK_CYGWIN_CAT_WORKS
+dnl # On Cygwin hosts, check that the cat command ignores
+dnl # carriage returns as otherwise builds will not work.
+dnl # See binutils PR 4334 for more details.
+AC_DEFUN([ACX_CHECK_CYGWIN_CAT_WORKS],[
+AC_MSG_CHECKING([to see if cat works as expected])
+echo a >cygwin-cat-check
+if test `cat cygwin-cat-check` = a ; then
+ rm cygwin-cat-check
+ AC_MSG_RESULT(yes)
+else
+ rm cygwin-cat-check
+ AC_MSG_RESULT(no)
+ AC_MSG_ERROR([The cat command does not ignore carriage return characters.
+ Please either mount the build directory in binary mode or run the following
+ commands before running any configure script:
+set -o igncr
+export SHELLOPTS
+ ])
+fi
+])