Use pkg-config to search for ncurses libraries

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Pending
--- a/Makefile
+++ b/Makefile
@@ -201,8 +201,8 @@ endif
 
 ifndef NCURSES_LDFLAGS
 ifdef NEEDS_NCURSES5
-	NCURSES_CFLAGS := $(shell ncurses5-config --cflags 2>/dev/null)
-	NCURSES_LDFLAGS := $(shell ncurses5-config --libs 2>/dev/null)
+	NCURSES_CFLAGS := $(shell pkg-config ncurses --cflags 2>/dev/null)
+	NCURSES_LDFLAGS := $(shell pkg-config ncurses --libs 2>/dev/null)
 	ifndef NO_PANEL
 		NCURSES_LDFLAGS += -lpanel
 	endif
@@ -211,8 +211,8 @@ endif
 
 ifndef NCURSES_LDFLAGS
 ifdef NEEDS_NCURSESW5
-	NCURSES_CFLAGS := $(shell ncursesw5-config --cflags 2>/dev/null)
-	NCURSES_LDFLAGS := $(shell ncursesw5-config --libs 2>/dev/null)
+	NCURSES_CFLAGS := $(shell p[k-config ncursesw --cflags 2>/dev/null)
+	NCURSES_LDFLAGS := $(shell pkg-config ncursesw --libs 2>/dev/null)
 	ifndef NO_PANEL
 		NCURSES_LDFLAGS += -lpanelw
 	endif
@@ -221,8 +221,8 @@ endif
 
 ifndef NCURSES_LDFLAGS
 ifdef NEEDS_NCURSES6
-	NCURSES_CFLAGS := $(shell ncurses6-config --cflags 2>/dev/null)
-	NCURSES_LDFLAGS := $(shell ncurses6-config --libs 2>/dev/null)
+	NCURSES_CFLAGS := $(shell pkg-config ncurses6 --cflags 2>/dev/null)
+	NCURSES_LDFLAGS := $(shell pkg-config ncurses6 --libs 2>/dev/null)
 	ifndef NO_PANEL
 		NCURSES_LDFLAGS += -lpanel
 	endif
@@ -231,8 +231,8 @@ endif
 
 ifndef NCURSES_LDFLAGS
 ifdef NEEDS_NCURSESW6
-	NCURSES_CFLAGS := $(shell ncursesw6-config --cflags 2>/dev/null)
-	NCURSES_LDFLAGS := $(shell ncursesw6-config --libs 2>/dev/null)
+	NCURSES_CFLAGS := $(shell pkg-config ncursesw --cflags 2>/dev/null)
+	NCURSES_LDFLAGS := $(shell pkg-config ncursesw --libs 2>/dev/null)
 	ifndef NO_PANEL
 		NCURSES_LDFLAGS += -lpanelw
 	endif
@@ -241,27 +241,27 @@ endif
 
 # try find ncuses by autodetect
 ifndef NCURSES_LDFLAGS
-	ifneq ($(shell ncursesw6-config --libs 2>/dev/null),)
-		NCURSES_CFLAGS := $(shell ncursesw6-config --cflags 2>/dev/null)
-		NCURSES_LDFLAGS := $(shell ncursesw6-config --libs 2>/dev/null)
+	ifneq ($(shell pkg-config ncursesw --libs 2>/dev/null),)
+		NCURSES_CFLAGS := $(shell pkg-config ncursesw --cflags 2>/dev/null)
+		NCURSES_LDFLAGS := $(shell pkg-config ncursesw --libs 2>/dev/null)
 		ifndef NO_PANEL
 			NCURSES_LDFLAGS += -lpanelw
 		endif
-	else ifneq ($(shell ncurses6-config --libs 2>/dev/null),)
-		NCURSES_CFLAGS := $(shell ncurses6-config --cflags 2>/dev/null)
-		NCURSES_LDFLAGS := $(shell ncurses6-config --libs 2>/dev/null)
+	else ifneq ($(shell pkg-config ncursesw --libs 2>/dev/null),)
+		NCURSES_CFLAGS := $(shell pkg-config ncursesw --cflags 2>/dev/null)
+		NCURSES_LDFLAGS := $(shell pkg-config ncursesw --libs 2>/dev/null)
 		ifndef NO_PANEL
 			NCURSES_LDFLAGS += -lpanel
 		endif
-	else ifneq ($(shell ncursesw5-config --libs 2>/dev/null),)
-		NCURSES_CFLAGS := $(shell ncursesw5-config --cflags 2>/dev/null)
-		NCURSES_LDFLAGS := $(shell ncursesw5-config --libs 2>/dev/null)
+	else ifneq ($(shell pkg-config ncursesw --libs 2>/dev/null),)
+		NCURSES_CFLAGS := $(shell pkg-config ncursesw --cflags 2>/dev/null)
+		NCURSES_LDFLAGS := $(shell pkg-config ncursesw --libs 2>/dev/null)
 		ifndef NO_PANEL
 			NCURSES_LDFLAGS += -lpanelw
 		endif
-	else ifneq ($(shell ncurses5-config --libs 2>/dev/null),)
-		NCURSES_CFLAGS := $(shell ncurses5-config --cflags 2>/dev/null)
-		NCURSES_LDFLAGS := $(shell ncurses5-config --libs 2>/dev/null)
+	else ifneq ($(shell pkg-config ncursesw --libs 2>/dev/null),)
+		NCURSES_CFLAGS := $(shell pkg-config ncursesw --cflags 2>/dev/null)
+		NCURSES_LDFLAGS := $(shell pkg-config ncursesw --libs 2>/dev/null)
 		ifndef NO_PANEL
 			NCURSES_LDFLAGS += -lpanel
 		endif