ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
# Test for GNAT.
-# We require the gnatbind program, and a compiler driver that
-# understands Ada. We use the user's CC setting, already found.
+# We require the gnatbind & gnatmake programs, as well as a compiler driver
+# that 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.$ac_objext; then
acx_cv_cc_gcc_supports_ada=yes
fi
rm -f conftest.*])
-if test x$GNATBIND != xno && test x$GNATMAKE != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then
+if test "x$GNATBIND" != xno && test "x$GNATMAKE" != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then
have_gnat=yes
else
have_gnat=no
[AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip,
[ echo abfoo >t1
echo cdfoo >t2
- gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
+ gcc_cv_prog_cmp_skip='tail -c +17 $$f1 > tmp-foo1; tail -c +17 $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2'
if cmp t1 t2 2 2 > /dev/null 2>&1; then
if cmp t1 t2 1 1 > /dev/null 2>&1; then
:
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
+])