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Fix GCC 5.x preprocessor failure
Building ncurses 5.9 with GCC 5.x fails with a syntax error, caused by
earlier preprocessing. This failure is more likely when building for
host (e.g. host-ncurses) that recently updated to GCC 5.x.
This patch is taken from the following link (more information is also
available here):
https://groups.google.com/forum/#!topic/sage-trac/U31shviuqzk
Signed-off-by: Doug Kehn <rdkehn@yahoo.com>
Index: b/ncurses/base/MKlib_gen.sh
===================================================================
--- a/ncurses/base/MKlib_gen.sh
+++ b/ncurses/base/MKlib_gen.sh
@@ -62,7 +62,15 @@ if test "${LC_MESSAGES+set}" = set; then
if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi
if test "${LC_COLLATE+set}" = set; then LC_COLLATE=C; export LC_COLLATE; fi
-preprocessor="$1 -DNCURSES_INTERNALS -I../include"
+# Work around "unexpected" output of GCC 5.1.0's cpp w.r.t. #line directives
+# by simply suppressing them:
+case `$1 -dumpversion 2>/dev/null` in
+ 5.[01].*) # assume a "broken" one
+ preprocessor="$1 -P -DNCURSES_INTERNALS -I../include"
+ ;;
+ *)
+ preprocessor="$1 -DNCURSES_INTERNALS -I../include"
+esac
AWK="$2"
USE="$3"
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