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Make Bison version detection more portable

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- POSIX sh actually does NOT support `+=`,
  but Bash does even in compatibility mode
- `mawk` does not fully support POSIX EREs (regexes),
  so work around its lack of brace support
Fixes building on Debian, apparently.
This commit is contained in:
ISSOtm
2020-12-29 22:29:25 +01:00
parent 6874f694e5
commit aa27e714d4
2 changed files with 5 additions and 5 deletions
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2
Makefile
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@@ -125,7 +125,7 @@ src/asm/parser.c: src/asm/parser.y
$QDEFS=; \ $QDEFS=; \
add_flag(){ \ add_flag(){ \
if src/check_bison_ver.sh $$1 $$2; then \ if src/check_bison_ver.sh $$1 $$2; then \
DEFS+=-D$$3; \ DEFS="$$DEFS -D$$3"; \
fi \ fi \
}; \ }; \
add_flag 3 5 api.token.raw=true; \ add_flag 3 5 api.token.raw=true; \

8
src/check_bison_ver.sh
View File

@@ -1,7 +1,7 @@
#!/bin/sh #!/bin/sh
bison -V | awk ' bison -V | awk -v major="$1" -v minor="$2" '
/^bison.*[0-9]+(\.[0-9]+){1,2}$/ { /^bison.*[0-9]+(\.[0-9]+)(\.[0-9]+)?$/ {
match($0, /[0-9]+(\.[0-9]+){1,2}$/); match($0, /[0-9]+(\.[0-9]+)(\.[0-9]+)?$/);
split(substr($0, RSTART), ver, "."); split(substr($0, RSTART), ver, ".");
if (ver[1] == major && ver[2] >= minor) { exit 0 } else { exit 1 } if (ver[1] == major && ver[2] >= minor) { exit 0 } else { exit 1 }
}' major="$1" minor="$2" }'