autotools: replace user variables with automake variables #67
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Our autotools configs shouldn't use user variables such as CFLAGS and LDFLAGS, so I moved their contents to AM_CFLAGS and AM_LDFLAGS and updated all affected makefiles.
Also I had to add AM_CCASFLAGS which is used for .S files, previously CFLAGS were added while compiling these files what can be misleading and we may want to not have the same CFLAGS for c and .S sources. So now we have to set AM_CFLAGS for c files and AM_CCASFLAGS for as files.
AM_CCASFLAGS are intially set to the same value as AM_CFLAGS for backward compatibility, but it would be good to check if we really need all these flags for our .S files.
Order of the flags passed to tools changed, because AM/target flags are added before user CFLAGS but binaries look to be the same, checked with:
Signed-off-by: Janusz Jankowski [email protected]