Configure build for both GNU and BSD makes

.gitignore

@@ -1,6 +1,7 @@
 /config/1-custom.mk
 /config/2-generated.mk
 /config/3-custom.mk
+/config/4-defvars.mk
 /config/5-custom.mk
 /polytreewm
 /src/*.o

Makefile

@@ -1,6 +1,12 @@
 # PolytreeWM - tiling window manager
 # See LICENSE file for copyright and license details.
 
+include config/1-custom.mk
+include config/2-generated.mk
+include config/3-custom.mk
+include config/4-defvars.mk
+include config/5-custom.mk
+
 CONFIGMKS = \
 	config/1-custom.mk \
 	config/2-generated.mk \
@@ -8,8 +14,6 @@ CONFIGMKS = \
 	config/4-defvars.mk \
 	config/5-custom.mk
 
-include $(CONFIGMKS)
-
 VERSION = 6.2
 
 SRC = \
@@ -66,7 +70,12 @@ clean:
 	rm -f polytreewm ${OBJ}
 
 distclean: clean
-	rm -f config/2-generated.mk
+	rm -f \
+		config/1-custom.mk \
+		config/2-generated.mk \
+		config/3-custom.mk \
+		config/4-defvars.mk \
+		config/5-custom.mk
 
 install: all
 	mkdir -p ${DESTDIR}${BINDIR}

config/4-defvars-bsd.mk

@@ -0,0 +1,15 @@
+CC = cc
+PKGCONFIG = pkg-config
+
+PKGS += fontconfig freetype2 x11 x11-xcb xcb xcb-res xft
+
+.if "$(ENABLE_XINERAMA)" == 'yes'
+CPPFLAGS += -DENABLE_XINERAMA
+PKGS += xinerama
+.endif
+
+CFLAGS  += `$(PKGCONFIG) --cflags $(PKGS)`
+LDFLAGS += `$(PKGCONFIG) --libs   $(PKGS)`
+
+CPPFLAGS += -DVERSION=\"$(VERSION)\" -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=200809L
+CFLAGS   += $(CPPFLAGS) -std=c99 -Os -pedantic -Wall -Wno-deprecated-declarations

configure

@@ -108,11 +108,18 @@ touch 'config/1-custom.mk'
 touch 'config/3-custom.mk'
 touch 'config/5-custom.mk'
 
-rm -f 'config/2-generated.mk'
+cat > 'config/2-generated.mk' << MAKE
+PREFIX          = $prefix
+EPREFIX         = $eprefix
+BINDIR          = $bindir
+DATAROOTDIR     = $datarootdir
+MANDIR          = $mandir
+ENABLE_XINERAMA = $enable_xinerama
+MAKE
 
-echo "PREFIX          = $prefix"          >> 'config/2-generated.mk'
-echo "EPREFIX         = $eprefix"         >> 'config/2-generated.mk'
-echo "BINDIR          = $bindir"          >> 'config/2-generated.mk'
-echo "DATAROOTDIR     = $datarootdir"     >> 'config/2-generated.mk'
-echo "MANDIR          = $mandir"          >> 'config/2-generated.mk'
-echo "ENABLE_XINERAMA = $enable_xinerama" >> 'config/2-generated.mk'
+make_help_result="$(make --help)"
+if [ "$(echo "$make_help_result" | grep 'gnu.org')" = '' ]; then
+	ln -sf '4-defvars-bsd.mk' 'config/4-defvars.mk'
+else
+	ln -sf '4-defvars-gnu.mk' 'config/4-defvars.mk'
+fi