diff options
Diffstat (limited to 'Makeconfig')
| -rw-r--r-- | Makeconfig | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/Makeconfig b/Makeconfig index 97f74f7e1f..45a970402e 100644 --- a/Makeconfig +++ b/Makeconfig @@ -557,6 +557,10 @@ else +gccwarn := -Wall -Wwrite-strings -Winline -Wstrict-prototypes endif +# We do not depend on the address of constants in different files to be +# actually different, so allow the compiler to merge them all. ++merge-constants = -fmerge-all-constants + # This is the program that generates makefile dependencies from C source files. # The -MP flag tells GCC >= 3.2 (which we now require) to produce dummy # targets for headers so that removed headers don't break the build. @@ -611,21 +615,22 @@ ifeq "$(strip $(+cflags))" "" +cflags := $(default_cflags) endif # $(+cflags) == "" -+cflags := $(+cflags) $(addprefix -mcpu=,$(with-cpu)) $(+gccwarn) ++cflags += $(addprefix -mcpu=,$(with-cpu)) $(+gccwarn) $(+merge-constants) +gcc-nowarn := -w # Don't duplicate options if we inherited variables from the parent. +cflags := $(sort $(+cflags)) -# These are flags given to the C compiler to tell it to look for include -# files (including ones given in angle brackets) in the current directory, -# in the parent library source directory and in the include directory. +# These are flags given to the C compiler to tell it to look for +# include files (including ones given in angle brackets) in the parent +# library source directory, in the include directory, and in the +# current directory. # `+sysdep-includes' will be defined by Makerules. -+includes = -I$(..)include -I. \ - $(patsubst %/,-I%,$(objpfx)) $(patsubst %/,-I%,$(..)) \ ++includes = -I$(..)include $(patsubst %/,-I%,$(..)) \ $(libio-include) $(includes) \ - $(+sysdep-includes) $(sysincludes) + $(+sysdep-includes) $(sysincludes) -I. \ + $(patsubst %/,-I%,$(objpfx)) # Since libio has several internal header files, we use a -I instead # of many little headers in the include directory. |