Fix configure and compilation issues with CPPFLAGS

[lilypond.git] / stepmake / aclocal.m4

diff --git a/stepmake/aclocal.m4 b/stepmake/aclocal.m4
index b69dc9c23b4c78dd1f77f8bbab56230ed66826f0..d692776da28d48142465fd54eb13fc0d13fb7af9 100644 (file)
--- a/stepmake/aclocal.m4
+++ b/stepmake/aclocal.m4
@@ -452,7 +452,7 @@ AC_DEFUN(STEPMAKE_FLEXLEXER_LOCATION, [
 using namespace std;
 #include <FlexLexer.h>
 EOF
-       FLEXLEXER_FILE=`$CXX -E conftest.cc | \
+       FLEXLEXER_FILE=`eval $ac_cpp conftest.cc | \
          sed 's!# 1 "\(.*FlexLexer.h\)"!@FLEXLEXER@\1@@!g' | grep '@@' | \
          sed 's!.*@FLEXLEXER@\(.*\)@@.*$!\1!g' ` 1> /dev/null 2> /dev/null
        rm conftest.cc