Add current directory to Perl include path

Recent Perl versions don't have the current directory in the module
include path anymore, so we need to add it here explicitly to make these
scripts continue to work.

src/backend/utils/mb/Unicode/Makefile

@@ -73,40 +73,40 @@ GENERICTEXTS = $(ISO8859TEXTS) $(WINTEXTS) \
 all: $(MAPS)
 
 $(GENERICMAPS): UCS_to_most.pl $(GENERICTEXTS)
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 johab_to_utf8.map utf8_to_johab.map: UCS_to_JOHAB.pl JOHAB.TXT
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 uhc_to_utf8.map utf8_to_uhc.map: UCS_to_UHC.pl windows-949-2000.xml
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 euc_jp_to_utf8.map utf8_to_euc_jp.map: UCS_to_EUC_JP.pl CP932.TXT JIS0212.TXT
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 euc_cn_to_utf8.map utf8_to_euc_cn.map: UCS_to_EUC_CN.pl gb-18030-2000.xml
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 euc_kr_to_utf8.map utf8_to_euc_kr.map: UCS_to_EUC_KR.pl KSX1001.TXT
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 euc_tw_to_utf8.map utf8_to_euc_tw.map: UCS_to_EUC_TW.pl CNS11643.TXT
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 sjis_to_utf8.map utf8_to_sjis.map: UCS_to_SJIS.pl CP932.TXT
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 gb18030_to_utf8.map utf8_to_gb18030.map: UCS_to_GB18030.pl gb-18030-2000.xml
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 big5_to_utf8.map utf8_to_big5.map: UCS_to_BIG5.pl BIG5.TXT CP950.TXT
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 euc_jis_2004_to_utf8.map utf8_to_euc_jis_2004.map: UCS_to_EUC_JIS_2004.pl euc-jis-2004-std.txt
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 shift_jis_2004_to_utf8.map utf8_to_shift_jis_2004.map: UCS_to_SHIFT_JIS_2004.pl sjis-0213-2004-std.txt
-	$(PERL) $<
+	$(PERL) -I $(srcdir) $<
 
 distclean: clean
 	rm -f $(TEXTS)