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-rw-r--r--config/acx.m45
1 files changed, 3 insertions, 2 deletions
diff --git a/config/acx.m4 b/config/acx.m4
index d186a4c..cea08b7 100644
--- a/config/acx.m4
+++ b/config/acx.m4
@@ -357,7 +357,8 @@ 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.
+# understands Ada. We use the user's CC setting, already found,
+# and possibly add $1 to the command-line parameters.
#
# Sets the shell variable have_gnat to yes or no as appropriate, and
# substitutes GNATBIND and GNATMAKE.
@@ -380,7 +381,7 @@ acx_cv_cc_gcc_supports_ada=no
# Other compilers, like HP Tru64 UNIX cc, exit successfully when
# given a .adb file, but produce no object file. So we must check
# if an object file was really produced to guard against this.
-errors=`(${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