Conditional statements in Android.mk

[Jin Chiu]

Do Android Makefiles support any form of conditional statements (i.e.
if-else syntax). For example, I would like to specify a separate set
of build flags and files based on the current ABI, or based on an
environment variable.

[Sambhav]

It does support conditional statements. 

ex.

ifeq ($(WITH_MALLOC_LEAK_CHECK),true)

  LOCAL_CFLAGS += -DMALLOC_LEAK_CHECK

endif

ifeq ($(TARGET_SIMULATOR),true)

ifeq ($(TARGET_OS),linux)

ifeq ($(TARGET_ARCH),x86)

LOCAL_LDLIBS += -lpthread -ldl -lrt -lssl

endif

endif

endif

if you have android source code you can browse through some existing Android.mk files to get more examples. 

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[Olivier Guilyardi]

The NDK docs state that Android.mk "is really a tiny GNU Makefile fragment...".

Here are the docs about make conditionals:
http://www.gnu.org/software/make/manual/html_node/Conditionals.html

Olivier

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