Add pragram GCC diagnostic ignored "-Wunused-macros"

src/gen-indic-table.py

diff --git a/src/gen-indic-table.py b/src/gen-indic-table.py
index e65b981..6532ee7 100755
--- a/src/gen-indic-table.py
+++ b/src/gen-indic-table.py
@@ -131,6 +131,8 @@
 
 what = ["INDIC_SYLLABIC_CATEGORY", "INDIC_MATRA_CATEGORY"]
 what_short = ["ISC", "IMC"]
+print ('#pragma GCC diagnostic push')
+print ('#pragma GCC diagnostic ignored "-Wunused-macros"')
 for i in range (2):
 	print ()
 	vv = sorted (values[i].keys ())
@@ -148,6 +150,7 @@
 			(what_short[i], s, what[i], v.upper (),
 			'	'* ((48-1 - len (what[i]) - 1 - len (v)) // 8),
 			values[i][v], v))
+print ('#pragma GCC diagnostic pop')
 print ()
 print ("#define _(S,M) INDIC_COMBINE_CATEGORIES (ISC_##S, IMC_##M)")
 print ()

src/gen-use-table.py

diff --git a/src/gen-use-table.py b/src/gen-use-table.py
index 6a1a217..be204b6 100755
--- a/src/gen-use-table.py
+++ b/src/gen-use-table.py
@@ -455,6 +455,8 @@
 offset = 0
 starts = []
 ends = []
+print ('#pragma GCC diagnostic push')
+print ('#pragma GCC diagnostic ignored "-Wunused-macros"')
 for k,v in sorted(use_mapping.items()):
 	if k in use_positions and use_positions[k]: continue
 	print ("#define %s	USE_%s	/* %s */" % (k, k, v.__name__[3:]))
@@ -463,6 +465,7 @@
 	for suf in v.keys():
 		tag = k + suf
 		print ("#define %s	USE_%s" % (tag, tag))
+print ('#pragma GCC diagnostic pop')
 print ("")
 print ("static const USE_TABLE_ELEMENT_TYPE use_table[] = {")
 for u in uu:

src/hb-blob.cc

diff --git a/src/hb-blob.cc b/src/hb-blob.cc
index c289fc6..bcf381e 100644
--- a/src/hb-blob.cc
+++ b/src/hb-blob.cc
@@ -31,7 +31,10 @@
  * https://www.oracle.com/technetwork/articles/servers-storage-dev/standardheaderfiles-453865.html
  */
 #ifndef _POSIX_C_SOURCE
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-macros"
 #define _POSIX_C_SOURCE 200809L
+#pragma GCC diagnostic pop
 #endif
 
 #include "hb.hh"

src/hb-ot-shape-complex-indic-table.cc

diff --git a/src/hb-ot-shape-complex-indic-table.cc b/src/hb-ot-shape-complex-indic-table.cc
index b7e4e7c..43b5ef8 100644
--- a/src/hb-ot-shape-complex-indic-table.cc
+++ b/src/hb-ot-shape-complex-indic-table.cc
@@ -16,6 +16,8 @@
 
 #include "hb-ot-shape-complex-indic.hh"
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-macros"
 
 #define ISC_A	INDIC_SYLLABIC_CATEGORY_AVAGRAHA		/*  16 chars; Avagraha */
 #define ISC_Bi	INDIC_SYLLABIC_CATEGORY_BINDU			/*  83 chars; Bindu */
@@ -69,6 +71,7 @@
 #define IMC_TLR	INDIC_MATRA_CATEGORY_TOP_AND_LEFT_AND_RIGHT	/*   4 chars; Top_And_Left_And_Right */
 #define IMC_TR	INDIC_MATRA_CATEGORY_TOP_AND_RIGHT		/*  13 chars; Top_And_Right */
 #define IMC_VOL	INDIC_MATRA_CATEGORY_VISUAL_ORDER_LEFT		/*  19 chars; Visual_Order_Left */
+#pragma GCC diagnostic pop
 
 #define _(S,M) INDIC_COMBINE_CATEGORIES (ISC_##S, IMC_##M)
 

src/hb-ot-shape-complex-use-table.cc

diff --git a/src/hb-ot-shape-complex-use-table.cc b/src/hb-ot-shape-complex-use-table.cc
index 2f3eb70..835b95b 100644
--- a/src/hb-ot-shape-complex-use-table.cc
+++ b/src/hb-ot-shape-complex-use-table.cc
@@ -17,6 +17,8 @@
 
 #include "hb-ot-shape-complex-use.hh"
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-macros"
 #define B	USE_B	/* BASE */
 #define CGJ	USE_CGJ	/* CGJ */
 #define CS	USE_CS	/* CONS_WITH_STACKER */
@@ -55,6 +57,7 @@
 #define VMBlw	USE_VMBlw
 #define VMPst	USE_VMPst
 #define VMAbv	USE_VMAbv
+#pragma GCC diagnostic pop
 
 static const USE_TABLE_ELEMENT_TYPE use_table[] = {