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cmd/go: cgo flags drops quotes. #12281

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omeid opened this issue Aug 23, 2015 · 2 comments

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@omeid
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commented Aug 23, 2015

There doesn't seem to be a way to pass a quoted value with cgo flags.

package libsass

/*
#cgo CFLAGS: -D VERSION="3.2.4-0ae11a4"


char* version(void) {
  return VERSION;
}
*/
import "C"

func Version() string {
    return C.GoString(C.version())
}
$ go build -x -v
WORK=/tmp/go-build030587731
test/cgoflag
mkdir -p $WORK/test/cgoflag/_obj/
mkdir -p $WORK/test/cgoflag/_obj/exe/
cd /home/ome/go/src/test/cgoflag
CGO_LDFLAGS="-g" "-O2" /usr/local/go/pkg/tool/linux_amd64/cgo -objdir $WORK/test/cgoflag/_obj/ -importpath test/cgoflag -- -I $WORK/test/cgoflag/_obj/ -D VERSION=3.2.4-0ae11a4 main.go
# test/cgoflag
./main.go: In function 'version':
<command-line>:0:9: error: too many decimal points in number
./main.go:8:10: note: in expansion of macro 'VERSION'
   return VERSION;
          ^
<command-line>:0:15: error: invalid suffix "ae11a4" on integer constant
./main.go:8:10: note: in expansion of macro 'VERSION'
   return VERSION;

I have also tried '"3.2.4-0ae11a4"' and some other variations, they all yield:
can't load package: package test/cgoflag: /home/ome/go/src/test/cgoflag/main.go: malformed #cgo argument: VERSION="3.2.4-0ae11a4"

@ianlancetaylor ianlancetaylor changed the title cmd/compile: cgo flags drops quotes. cmd/go: cgo flags drops quotes. Aug 25, 2015

@ianlancetaylor ianlancetaylor added this to the Unplanned milestone Aug 25, 2015

@c4milo

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commented Sep 21, 2015

I'm running into this same issue.

@zengming00

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commented Jul 25, 2019

I had the same problem, When I try to use quickjs
quickjs has a macro CONFIG_VERSION is a string, Using the #cgo directives is always wrong, I made a successful attempt with the CGO_CFLAGS environment, but this may not be a good approach

CGO_CFLAGS="-DCONFIG_VERSION=\"1.0.0\"" go build
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