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portable: propagate AM_CFLAGS/AM_CPPFLAGS Compiling with warnings and certain compiler flags is important for security and bug-free code. Set a bunch of warnings via AM_CFLAGS in a common Makefile, and let those values propagate to all other Makefiles. While here, also fix the version string to remove quotes.
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1 AM_CFLAGS += \

2 	    @AM_CPPFLAGS@ \

3 	    -g -Wall -Wno-long-long -W -Wformat=2 -Wmissing-prototypes \

4 	    -Wstrict-prototypes -Wmissing-declarations -Wwrite-strings \

5 	    -Wshadow -Wpointer-arith -Wsign-compare -Wundef \

6 	    -Wbad-function-cast -Winline -Wcast-align \

7 	    -Wdeclaration-after-statement -Wno-pointer-sign \

8 	    -Wno-attributes -Wno-unused-result

10 AM_CPPFLAGS += \

11 	      @AM_CPPFLAGS@ \

12 	      -DGOT_VERSION=@VERSION@ \

13 	      -DGOT_VERSION_NUMBER=@VERSION@ \

14 	      -DGOT_LIBEXECDIR="$(libexecdir)" \

15 	      -I$(top_srcdir) \

16 	      -I$(top_srcdir)/compat \

17 	      -I$(top_srcdir)/lib \

18 	      -I$(top_srcdir)/include \

19 	      -I.