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Makefile: Improve gcc detection

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Wasn't working for me until I fixed it.
Turns out gcc really doesn't like giving its name out.
Most of the time it reads argv[0].
This commit is contained in:
GoldenTails 2021-08-28 15:39:34 -05:00
parent 824b1ab28c
commit 1a8ec7975c
1 changed files with 8 additions and 4 deletions
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12
src/Makefile.d/detect.mk
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@ -71,13 +71,17 @@ latest_gcc_version:=10.2
# manually set. And don't bother if this is a clean only
# run.
ifeq (,$(call Wildvar,GCC% destructive))
version:=$(shell $(CC) --version)
# can't use $(CC) --version here since that uses argv[0] to display the name
# also gcc outputs the information to stderr, so I had to do 2>&1
# this program really doesn't like identifying itself
version:=$(shell $(CC) -v 2>&1)
# check if this is in fact GCC
ifneq (,$(or $(findstring gcc,$(version)),\
$(findstring GCC,$(version))))
ifneq (,$(findstring gcc version,$(version)))
version:=$(shell $(CC) -dumpversion)
# in stark contrast to the name, gcc will give me a nicely formatted version number for free
version:=$(shell $(CC) -dumpfullversion)
# Turn version into words of major, minor
v:=$(subst ., ,$(version))