Use awk to check versions
Some Linux distributions (e.g. Centos) don't have bc installed by default. And some (e.g Centos 8) don't have binary packages for it available either. It's safer to use awk instead of bc to check versions of bison and flex in the parser Makefile. Closes #144
This commit is contained in:
parent
dd360837f1
commit
0f96b977e9
|
@ -3,13 +3,13 @@ BISON?=bison
|
|||
FLEX?=flex
|
||||
|
||||
BISON_VERSION=$(shell $(BISON) --version | head -n 1 | grep -o '[0-9]\.[0-9]\+')
|
||||
BISON_VERSION_SUPPORTED=$(shell echo $(BISON_VERSION) \>= 3.0 | bc)
|
||||
BISON_VERSION_SUPPORTED=$(shell awk -v a=$(BISON_VERSION) -v b="3.0" 'BEGIN { print (a >= b) ? 1 : 0 }')
|
||||
ifneq ($(BISON_VERSION_SUPPORTED), 1)
|
||||
$(error Bison version $(BISON_VERSION) not supported. If you are using OS X, `bison` uses the system default instead of the brew version. Run BISON=/usr/local/opt/bison/bin/bison make)
|
||||
endif
|
||||
|
||||
FLEX_VERSION=$(shell $(FLEX) --version | head -n 1 | grep -o '[0-9]\.[0-9]\+')
|
||||
FLEX_VERSION_SUPPORTED=$(shell echo $(FLEX_VERSION) \>= 2.6 | bc)
|
||||
FLEX_VERSION_SUPPORTED=$(shell awk -v a=$(FLEX_VERSION) -v b="2.6" 'BEGIN { print (a >= b) ? 1 : 0 }')
|
||||
ifneq ($(FLEX_VERSION_SUPPORTED), 1)
|
||||
$(error Flex version $(FLEX_VERSION) not supported. If you are using OS X, `flex` uses the system default instead of the brew version. Run FLEX=/usr/local/opt/flex/bin/flex make)
|
||||
endif
|
||||
|
|
Loading…
Reference in New Issue