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10 CPUINTERN_H=$(INCLUDE)/linuxIntern.h |
10 CPUINTERN_H=$(INCLUDE)/linuxIntern.h |
11 OS=-DLINUX |
11 OS=-DLINUX |
12 |
12 |
13 MAKEFILE_EXTENSION=linux-elf |
13 MAKEFILE_EXTENSION=linux-elf |
14 SETUP_RULE=setup_linux |
14 SETUP_RULE=setup_linux |
15 |
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16 # We need to use at most GCC 6.x, some code may fail to compile |
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17 # with GCC 7 due to -Werror (`send.c` for instance). We won't fix |
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18 # that for Smalltalk/X 6.x.x, will be fixed only for Smalltalk/X 8.1.x |
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19 # series. |
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20 # |
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21 # Note, that we have to use the trick with `ifeq $(origin CC),...` rather than |
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22 # `ifdef` since CC is one of the GNU make implicit variables. series |
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23 # |
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24 # See https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html |
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25 ifeq ($(origin CC),default) |
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26 ifneq ($(shell which gcc-6),) |
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27 CC = gcc-6 |
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28 else ifneq ($(shell which gcc-5),) |
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29 CC = gcc-5 |
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30 else ifneq ($(shell which gcc-4),) |
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31 CC = gcc-4 |
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32 endif |
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33 endif |
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