args = append(args, bp.CgoCPPFLAGS...)
	if len(bp.CgoPkgConfig) > 0 {
		cmd := exec.Command("pkg-config", append([]string{"--cflags"}, bp.CgoPkgConfig...)...)
		out, err := cmd.Output()
		if err != nil {
			return nil, fmt.Errorf("pkg-config --cflags: %w", err)
		}
		args = append(args, strings.Fields(string(out))...)
	}
	args = append(args, "-I", tmpdir)

        then:
        def e = thrown WorkValidationException
        validateException(task, e,
            missingValueMessage { property('cCompiler').includeLink() },
            missingValueMessage { property('CFlags').includeLink() },
            missingValueMessage { property('dns').includeLink() },
            missingValueMessage { property('URL').includeLink() })
    }

    def propertyValidationJavaBeanSpecSingleChar() {

			}
			args[i] = arg
		}

		switch verb {
		case "CFLAGS", "CPPFLAGS", "CXXFLAGS", "FFLAGS", "LDFLAGS":
			// Change relative paths to absolute.
			ctxt.makePathsAbsolute(args, di.Dir)
		}

		switch verb {
		case "CFLAGS":
			di.CgoCFLAGS = append(di.CgoCFLAGS, args...)
		case "CPPFLAGS":
			di.CgoCPPFLAGS = append(di.CgoCPPFLAGS, args...)

go build -ldflags=-tmpdir=tmp2 -o $devnull ./usesInternalCgo &

# Third build: program uses only "runtime/cgo", so we would normally
# expect internal linking, except that cflags contain suspicious entries
# (in this case, a flag that does not appear on the allow list).
env CGO_CFLAGS=-fmerge-all-constants
env CGO_LDFLAGS=-fmerge-all-constants

   return c;
}

// issue 4857
#cgo CFLAGS: -Werror
const struct { int a; } *issue4857() { return (void *)0; }

// issue 5224
// Test that the #cgo CFLAGS directive works,
// with and without platform filters.
#cgo CFLAGS: -DCOMMON_VALUE=123
#cgo windows CFLAGS: -DIS_WINDOWS=1
#cgo !windows CFLAGS: -DIS_WINDOWS=0
int common = COMMON_VALUE;
int is_windows = IS_WINDOWS;

	if found := re.Find(rest) != nil; !found {
		t.Fatalf("could not find runtime symbol in backtrace after signal handler:\n%s", rest)
	}
}

const coreCrashThreadSource = `
package main

/*
#cgo CFLAGS: -g -O0
#include <stdio.h>
#include <stddef.h>
void trigger_crash()
{
	int* ptr = NULL;
	*ptr = 1024;
}
*/
import "C"
import (
	"flag"
	"fmt"
	"os"
	"runtime/debug"

 	}
       else
 	++ep;
+  }
 
   UNLOCK;
 
diff --git a/support/Makefile b/support/Makefile
index a253698..2f4e2a9 100644
--- a/support/Makefile
+++ b/support/Makefile
@@ -167,13 +167,6 @@ CFLAGS-support_paths.c = \
 		-DINSTDIR_PATH=\"$(prefix)\" \
 		-DLIBDIR_PATH=\"$(libdir)\"
 
-ifeq (,$(CXX))
-LINKS_DSO_PROGRAM = links-dso-program-c
-else
-LINKS_DSO_PROGRAM = links-dso-program

effect to systems satisfying one of the constraints
(see https://golang.org/pkg/go/build/#hdr-Build_Constraints for details about the constraint syntax).
For example:

	// #cgo CFLAGS: -DPNG_DEBUG=1
	// #cgo amd64 386 CFLAGS: -DX86=1
	// #cgo LDFLAGS: -lpng
	// #include <png.h>
	import "C"

Alternatively, CPPFLAGS and LDFLAGS may be obtained via the pkg-config tool

			}
			args[i] = arg
		}

		switch verb {
		case "CFLAGS", "CPPFLAGS", "CXXFLAGS", "FFLAGS", "LDFLAGS":
			// Change relative paths to absolute.
			ctxt.makePathsAbsolute(args, di.Dir)
		}

		switch verb {
		case "CFLAGS":
			di.CgoCFLAGS = append(di.CgoCFLAGS, args...)
		case "CPPFLAGS":
			di.CgoCPPFLAGS = append(di.CgoCPPFLAGS, args...)

		C code.
	CGO_CFLAGS_ALLOW
		A regular expression specifying additional flags to allow
		to appear in #cgo CFLAGS source code directives.
		Does not apply to the CGO_CFLAGS environment variable.
	CGO_CFLAGS_DISALLOW
		A regular expression specifying flags that must be disallowed
		from appearing in #cgo CFLAGS source code directives.
		Does not apply to the CGO_CFLAGS environment variable.