"regexp"
	"runtime"
	"strings"
	"testing"
)

func TestInlining(t *testing.T) {
	testenv.MustHaveGoBuild(t)
	t.Parallel()
	out, err := exec.Command(
		testenv.GoToolPath(t),
		"build",
		"--gcflags=-m",
		"net/netip").CombinedOutput()
	if err != nil {
		t.Fatalf("go build: %v, %s", err, out)
	}
	got := map[string]bool{}
	regexp.MustCompile(` can inline (\S+)`).ReplaceAllFunc(out, func(match []byte) []byte {

a cost of an additional 0.1% text and binary size.  This is currently only implemented
on 386 and amd64 because it has not shown an improvement on other platforms.
Hot block alignment can be disabled with `-gcflags=[<packages>=]-d=alignhot=0`

## Assembler {#assembler}

## Linker {#linker}

<!-- go.dev/issue/67401, CL 585556, CL 587220, and many more -->
The linker now disallows using a `//go:linkname` directive to refer to

  V=3 kube::log::info "Building binaries with GCFLAGS=${gogcflags} LDFLAGS=${goldflags}"

  local -a build_args
  if [[ "${#statics[@]}" != 0 ]]; then
    build_args=(
      -installsuffix=static
      ${goflags:+"${goflags[@]}"}
      -gcflags="${gogcflags}"
      -ldflags="${goldflags}"
      -tags="${gotags:-}"
    )

${TARGET_OUT}/release/istioctl-linux-amd64:
	GOOS=linux GOARCH=amd64 LDFLAGS=$(RELEASE_LDFLAGS) common/scripts/gobuild.sh $@ ./istioctl/cmd/istioctl
${TARGET_OUT}/release/istioctl-linux-armv7:
	GOOS=linux GOARCH=arm GOARM=7 LDFLAGS=$(RELEASE_LDFLAGS) common/scripts/gobuild.sh $@ ./istioctl/cmd/istioctl
${TARGET_OUT}/release/istioctl-linux-arm64:
	GOOS=linux GOARCH=arm64 LDFLAGS=$(RELEASE_LDFLAGS) common/scripts/gobuild.sh $@ ./istioctl/cmd/istioctl

//
//	    // Cgo directives
//	    CgoCFLAGS    []string // cgo: flags for C compiler
//	    CgoCPPFLAGS  []string // cgo: flags for C preprocessor
//	    CgoCXXFLAGS  []string // cgo: flags for C++ compiler
//	    CgoFFLAGS    []string // cgo: flags for Fortran compiler
//	    CgoLDFLAGS   []string // cgo: flags for linker
//	    CgoPkgConfig []string // cgo: pkg-config names
//

	}
	return args
}

// CFlags returns the flags to use when invoking the C, C++ or Fortran compilers, or cgo.
func (b *Builder) CFlags(p *load.Package) (cppflags, cflags, cxxflags, fflags, ldflags []string, err error) {
	if cppflags, err = buildFlags("CPPFLAGS", "", p.CgoCPPFLAGS, checkCompilerFlags); err != nil {
		return
	}
	if cflags, err = buildFlags("CFLAGS", DefaultCFlags, p.CgoCFLAGS, checkCompilerFlags); err != nil {

) >_const.go

# Pull out the error names for later.
errors=$(
	echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
	awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
	sort
)

# Pull out the signal names for later.
signals=$(
	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
	grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT\|SIGMAX64' |
	sort

.EXPORT_ALL_VARIABLES:
OUT_DIR ?= _output
BIN_DIR := $(OUT_DIR)/bin

ifdef KUBE_GOFLAGS
$(info KUBE_GOFLAGS is now deprecated. Please use GOFLAGS instead.)
ifndef GOFLAGS
GOFLAGS := $(KUBE_GOFLAGS)
unexport KUBE_GOFLAGS
else
$(error Both KUBE_GOFLAGS and GOFLAGS are set. Please use just GOFLAGS)
endif
endif

# This controls the verbosity of the build.  Higher numbers mean more output.
KUBE_VERBOSE ?= 1

define ALL_HELP_INFO

			// build C code (if any) and link with Go code
			cmd, err := cc(config.cFlags...)
			if err != nil {
				t.Fatalf("error running cc: %v", err)
			}
			cmd.Args = append(cmd.Args, config.ldFlags...)
			cmd.Args = append(cmd.Args, "-o", outPath, "-I", dir.Base())
			if tc.cSrc != "" {
				cmd.Args = append(cmd.Args, srcPath(tc.cSrc))
			}

    --env "KUBE_STATIC_OVERRIDES=' ${KUBE_STATIC_OVERRIDES[*]:-} '"
    --env "FORCE_HOST_GO=${FORCE_HOST_GO:-}"
    --env "GO_VERSION=${GO_VERSION:-}"
    --env "GOTOOLCHAIN=${GOTOOLCHAIN:-}"
    --env "GOFLAGS=${GOFLAGS:-}"
    --env "GOGCFLAGS=${GOGCFLAGS:-}"
    --env "SOURCE_DATE_EPOCH=${SOURCE_DATE_EPOCH:-}"
  )

  # use GOLDFLAGS only if it is set explicitly.
  if [[ -v GOLDFLAGS ]]; then
    docker_run_opts+=(