[gtk+] examples: Clean up the standalone Makefiles

[Emmanuele Bassi <ebassi src gnome org>]

commit 9aae351487cc916e157a8e261f1bc3a7677dbfab
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue May 19 16:14:49 2015 +0100

    examples: Clean up the standalone Makefiles
    
    Do not hardcode GCC as the compiler; use $(shell) expansion instead of
    backticks; split the built source into its own variable.

 examples/application1/Makefile.example  |    6 +++---
 examples/application10/Makefile.example |   17 +++++++++--------
 examples/application2/Makefile.example  |   15 ++++++++-------
 examples/application3/Makefile.example  |   15 ++++++++-------
 examples/application4/Makefile.example  |   15 ++++++++-------
 examples/application5/Makefile.example  |   17 +++++++++--------
 examples/application6/Makefile.example  |   17 +++++++++--------
 examples/application7/Makefile.example  |   17 +++++++++--------
 examples/application8/Makefile.example  |   17 +++++++++--------
 examples/application9/Makefile.example  |   17 +++++++++--------
 10 files changed, 81 insertions(+), 72 deletions(-)
---
diff --git a/examples/application1/Makefile.example b/examples/application1/Makefile.example
index 7b99cb5..ffab3d4 100644
--- a/examples/application1/Makefile.example
+++ b/examples/application1/Makefile.example
@@ -1,7 +1,7 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
 
 SRC = main.c exampleapp.c exampleappwin.c
 
diff --git a/examples/application10/Makefile.example b/examples/application10/Makefile.example
index 0561f77..917e3c7 100644
--- a/examples/application10/Makefile.example
+++ b/examples/application10/Makefile.example
@@ -1,13 +1,14 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
-GLIB_COMPILE_SCHEMAS = `$(PKGCONFIG) --variable=glib_compile_schemas gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
+GLIB_COMPILE_SCHEMAS = $(shell $(PKGCONFIG) --variable=glib_compile_schemas gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c exampleappprefs.c main.c
+SRC = exampleapp.c exampleappwin.c exampleappprefs.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -29,6 +30,6 @@ exampleapp: $(OBJS) gschemas.compiled
 clean:
        rm -f org.gtk.exampleapp.gschema.valid
        rm -f gschemas.compiled
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp
diff --git a/examples/application2/Makefile.example b/examples/application2/Makefile.example
index f3d175f..c6f8293 100644
--- a/examples/application2/Makefile.example
+++ b/examples/application2/Makefile.example
@@ -1,12 +1,13 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c main.c
+SRC = exampleapp.c exampleappwin.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -20,6 +21,6 @@ exampleapp: $(OBJS)
        $(CC) -o $(@F) $(LIBS) $(OBJS)
 
 clean:
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp
diff --git a/examples/application3/Makefile.example b/examples/application3/Makefile.example
index f3d175f..c6f8293 100644
--- a/examples/application3/Makefile.example
+++ b/examples/application3/Makefile.example
@@ -1,12 +1,13 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c main.c
+SRC = exampleapp.c exampleappwin.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -20,6 +21,6 @@ exampleapp: $(OBJS)
        $(CC) -o $(@F) $(LIBS) $(OBJS)
 
 clean:
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp
diff --git a/examples/application4/Makefile.example b/examples/application4/Makefile.example
index 6a7f46b..97b2265 100644
--- a/examples/application4/Makefile.example
+++ b/examples/application4/Makefile.example
@@ -1,12 +1,13 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c main.c
+SRC = exampleapp.c exampleappwin.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -20,6 +21,6 @@ exampleapp: $(OBJS)
        $(CC) -o $(@F) $(LIBS) $(OBJS)
 
 clean:
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp
diff --git a/examples/application5/Makefile.example b/examples/application5/Makefile.example
index ecfbe29..e667ebf 100644
--- a/examples/application5/Makefile.example
+++ b/examples/application5/Makefile.example
@@ -1,13 +1,14 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
-GLIB_COMPILE_SCHEMAS = `$(PKGCONFIG) --variable=glib_compile_schemas gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
+GLIB_COMPILE_SCHEMAS = $(shell $(PKGCONFIG) --variable=glib_compile_schemas gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c main.c
+SRC = exampleapp.c exampleappwin.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -29,6 +30,6 @@ exampleapp: $(OBJS) gschemas.compiled
 clean:
        rm -f org.gtk.exampleapp.gschema.valid
        rm -f gschemas.compiled
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp
diff --git a/examples/application6/Makefile.example b/examples/application6/Makefile.example
index 418cc4d..eb9cff4 100644
--- a/examples/application6/Makefile.example
+++ b/examples/application6/Makefile.example
@@ -1,13 +1,14 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
-GLIB_COMPILE_SCHEMAS = `$(PKGCONFIG) --variable=glib_compile_schemas gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
+GLIB_COMPILE_SCHEMAS = $(shell $(PKGCONFIG) --variable=glib_compile_schemas gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c exampleappprefs.c main.c
+SRC = exampleapp.c exampleappwin.c exampleappprefs.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -29,6 +30,6 @@ exampleapp: $(OBJS) gschemas.compiled
 clean:
        rm -f org.gtk.exampleapp.gschema.valid
        rm -f gschemas.compiled
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp
diff --git a/examples/application7/Makefile.example b/examples/application7/Makefile.example
index 0561f77..917e3c7 100644
--- a/examples/application7/Makefile.example
+++ b/examples/application7/Makefile.example
@@ -1,13 +1,14 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
-GLIB_COMPILE_SCHEMAS = `$(PKGCONFIG) --variable=glib_compile_schemas gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
+GLIB_COMPILE_SCHEMAS = $(shell $(PKGCONFIG) --variable=glib_compile_schemas gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c exampleappprefs.c main.c
+SRC = exampleapp.c exampleappwin.c exampleappprefs.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -29,6 +30,6 @@ exampleapp: $(OBJS) gschemas.compiled
 clean:
        rm -f org.gtk.exampleapp.gschema.valid
        rm -f gschemas.compiled
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp
diff --git a/examples/application8/Makefile.example b/examples/application8/Makefile.example
index 0561f77..917e3c7 100644
--- a/examples/application8/Makefile.example
+++ b/examples/application8/Makefile.example
@@ -1,13 +1,14 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
-GLIB_COMPILE_SCHEMAS = `$(PKGCONFIG) --variable=glib_compile_schemas gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
+GLIB_COMPILE_SCHEMAS = $(shell $(PKGCONFIG) --variable=glib_compile_schemas gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c exampleappprefs.c main.c
+SRC = exampleapp.c exampleappwin.c exampleappprefs.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -29,6 +30,6 @@ exampleapp: $(OBJS) gschemas.compiled
 clean:
        rm -f org.gtk.exampleapp.gschema.valid
        rm -f gschemas.compiled
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp
diff --git a/examples/application9/Makefile.example b/examples/application9/Makefile.example
index 0561f77..917e3c7 100644
--- a/examples/application9/Makefile.example
+++ b/examples/application9/Makefile.example
@@ -1,13 +1,14 @@
-CC = gcc
+CC ?= gcc
 PKGCONFIG = $(shell which pkg-config)
-CFLAGS = `$(PKGCONFIG) --cflags gtk+-3.0`
-LIBS = `$(PKGCONFIG) --libs gtk+-3.0`
-GLIB_COMPILE_RESOURCES = `$(PKGCONFIG) --variable=glib_compile_resources gio-2.0`
-GLIB_COMPILE_SCHEMAS = `$(PKGCONFIG) --variable=glib_compile_schemas gio-2.0`
+CFLAGS = $(shell $(PKGCONFIG) --cflags gtk+-3.0)
+LIBS = $(shell $(PKGCONFIG) --libs gtk+-3.0)
+GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources gio-2.0)
+GLIB_COMPILE_SCHEMAS = $(shell $(PKGCONFIG) --variable=glib_compile_schemas gio-2.0)
 
-SRC = resources.c exampleapp.c exampleappwin.c exampleappprefs.c main.c
+SRC = exampleapp.c exampleappwin.c exampleappprefs.c main.c
+BUILT_SRC = resources.c
 
-OBJS = $(SRC:.c=.o)
+OBJS = $(BUILT_SRC:.c=.o) $(SRC:.c=.o)
 
 all: exampleapp
 
@@ -29,6 +30,6 @@ exampleapp: $(OBJS) gschemas.compiled
 clean:
        rm -f org.gtk.exampleapp.gschema.valid
        rm -f gschemas.compiled
-       rm -f resources.c
+       rm -f $(BUILT_SRC)
        rm -f $(OBJS)
        rm -f exampleapp