Makefile.am条件测试

Question

I usually add to my home-made Makefile the following:

ifeq ($(shell uname -m),armv7l)
ADDITIONAL := -mfpu=neon
endif

How can I do the same in a Makefile.am file?

Answer 1

Here is a post that basically answers my question: http://wcang.blogspot.com/2008/05/conditional-compilation-based-on-target.html . So the solution is:

configure.ac :

AM_CONDITIONAL(ARM, test `uname -m` = "armv7l")

Makefile.am :

if ARM
NEON=-mfpu=neon
else
NEON=
endif