diff -uNr indent-2.2.12/src/Makefile.in indent-2.2.12/src/Makefile.in.patch
--- indent-2.2.12/src/Makefile.in	2018-09-06 00:00:11.000000000 +0300
+++ indent-2.2.12/src/Makefile.in.patch	2022-10-14 09:12:31.576359399 +0300
@@ -352,7 +352,7 @@
 BUILT_SOURCES = gperf.c gperf-cc.c
 AM_CPPFLAGS = -I. -I$(srcdir) -I$(top_srcdir)/intl
 MAINTAINERCLEANFILES = Makefile.in libgettext.h
-AM_CFLAGS = -Wall -W -Werror -Wredundant-decls -Wshadow \
+AM_CFLAGS = -Wall -W -Wredundant-decls -Wshadow \
 	-Wstrict-prototypes -Wmissing-prototypes -Wnested-externs \
 	-Wmissing-declarations -Wcomment -Wbad-function-cast \
 	-Wcast-align $(am__append_1)