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$NetBSD: patch-common_glib-gen.mak,v 1.1 2021/05/06 18:01:31 martin Exp $
GNU Make 4.3 has a backwards incompatible change affecting the use of
number signs or hashes (ie., #) inside function invocations. See:
https://lists.gnu.org/archive/html/info-gnu/2020-01/msg00004.html
In this case, it would expand the '\#' in the '\n\#include \"$(h)\"'
argument to the foreach call to '\#', not '#'. This would lead to
spurious backslashes in front of the '#include' directives in the
generated fs-enumtypes.c file.
Spotted by Ernestas Kulik.
https://gitlab.freedesktop.org/farstream/farstream/-/commit/54987d445ea714b467d901b7daf8c09ed0644189
--- common/glib-gen.mak.orig 2011-12-11 20:10:47.000000000 +0100
+++ common/glib-gen.mak 2021-05-06 19:36:23.205924531 +0200
@@ -5,7 +5,8 @@
#glib_enum_define=GST_COLOR_BALANCE
#glib_enum_prefix=gst_color_balance
-enum_headers=$(foreach h,$(glib_enum_headers),\n\#include \"$(h)\")
+hash:=\#
+enum_headers=$(foreach h,$(glib_enum_headers),\n$(hash)include \"$(h)\")
# these are all the rules generating the relevant files
%-marshal.h: %-marshal.list
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