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Conditional sections in AIX Makefiles

How to create a makefile that works on AIX, Linux, and SunOS and has the ability to provide different compiler options for each environment?

I have access to an environment variable that describes the OS, but the AIX make utility does not like ifeq, so I cannot do something like:

ifeq($(OS), AIX)
    CFLAGS = $(CFLAGS) <IBM compiler options>
endif
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2 answers

You can use the construct as follows:

CFLAGS_AIX =AIX
CFLAGS_Linux =Flags Linux
CFLAGS_SunOS =Flags SunOS Flags
CFLAGS = $(CFLAGS_$(OS))

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Makefile , make . ( , , make ( ) .) , , . , automake, make . unixen , ( ) " ". , , , , , . autoconf/automake - , CFLAGS , CONFIG_SITE , , CONFIG_SITE login script . ( , /make ). , . (, ).

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Source: https://habr.com/ru/post/1715982/

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