`make oc` fails on macOS 26.1

[dronenb]

Platform: macOS
Version (output of sws_vers -ProductVersion): 26.1

Issue

even after installing dependencies via brew install gpgme heimdall, I get the following when running make oc:

go build -mod=vendor -tags 'include_gcs include_oss containers_image_openpgp gssapi' -ldflags "-X github.com/openshift/oc/pkg/version.versionFromGit="v4.2.0-alpha.0-2809-g1c5f490" -X github.com/openshift/oc/pkg/version.commitFromGit="1c5f490b7" -X github.com/openshift/oc/pkg/version.gitTreeState="clean" -X github.com/openshift/oc/pkg/version.buildDate="2025-11-07T19:18:37Z" -X k8s.io/component-base/version.gitMajor="1" -X k8s.io/component-base/version.gitMinor="34" -X k8s.io/component-base/version.gitVersion="v1.34.1" -X k8s.io/component-base/version.gitCommit="1c5f490b7" -X k8s.io/component-base/version.buildDate="2025-11-07T19:18:35Z" -X k8s.io/component-base/version.gitTreeState="clean" -X k8s.io/client-go/pkg/version.gitVersion="v4.2.0-alpha.0-2809-g1c5f490" -X k8s.io/client-go/pkg/version.gitCommit="1c5f490b7" -X k8s.io/client-go/pkg/version.buildDate="2025-11-07T19:18:35Z" -X k8s.io/client-go/pkg/version.gitTreeState="clean"" github.com/openshift/oc/cmd/oc
# github.com/apcera/gssapi
vendor/github.com/apcera/gssapi/name.go:213:9: could not determine what C.wrap_gss_canonicalize_name refers to
cgo: 
cc errors for preamble:
vendor/github.com/apcera/gssapi/name.go:90:2: error: unknown type name 'gss_const_name_t'
   90 |         gss_const_name_t input_name,
      |         ^
vendor/github.com/apcera/gssapi/name.go:95:16: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   95 |                 OM_uint32 *, gss_const_name_t, const gss_OID, gss_name_t *)
      |                              ^
      |                              int
2 errors generated.

make: *** [build] Error 1

[tchap]

I've just tried cloning the repo, installing deps via Homebrow and make oc. Worked just fine for me.

[dronenb]

@tchap I just spun up a fresh macOS 26.1 VM in UTM, and only ran:

xcode-select --install
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
echo >> "${HOME}/.zprofile"
echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> "${HOME}/.zprofile"
eval "$(/opt/homebrew/bin/brew shellenv)"
brew install heimdall
brew install gpgme
brew install go
git clone https://github.com/openshift/oc.git
cd oc
make oc

And I get the same error. This was also noted here. I think that out of the box, most people who try to compile this will run into this. As such, I think merging the changes in #2137 will make peoples' lives easier out of the box.

[openshift-bot]

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/lifecycle stale

[openshift-bot]

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Mark the issue as fresh by commenting /remove-lifecycle rotten.
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/lifecycle rotten
/remove-lifecycle stale

[nirs]

Same here in macOS 26.4:

% make
go build -mod=vendor -tags 'include_gcs include_oss containers_image_openpgp gssapi' -ldflags "-X github.com/openshift/oc/pkg/version.versionFromGit="v4.2.0-alpha.0-2934-gbb4c3de" -X github.com/openshift/oc/pkg/version.commitFromGit="bb4c3decd" -X github.com/openshift/oc/pkg/version.gitTreeState="clean" -X github.com/openshift/oc/pkg/version.buildDate="2026-03-30T22:35:51Z" -X k8s.io/component-base/version.gitMajor="1" -X k8s.io/component-base/version.gitMinor="35" -X k8s.io/component-base/version.gitVersion="v1.35.2" -X k8s.io/component-base/version.gitCommit="bb4c3decd" -X k8s.io/component-base/version.buildDate="2026-03-30T22:35:50Z" -X k8s.io/component-base/version.gitTreeState="clean" -X k8s.io/client-go/pkg/version.gitVersion="v4.2.0-alpha.0-2934-gbb4c3de" -X k8s.io/client-go/pkg/version.gitCommit="bb4c3decd" -X k8s.io/client-go/pkg/version.buildDate="2026-03-30T22:35:50Z" -X k8s.io/client-go/pkg/version.gitTreeState="clean" -s -w" github.com/openshift/oc/cmd/oc
# github.com/apcera/gssapi
vendor/github.com/apcera/gssapi/name.go:213:9: could not determine what C.wrap_gss_canonicalize_name refers to
cgo: 
cc errors for preamble:
vendor/github.com/apcera/gssapi/name.go:90:2: error: unknown type name 'gss_const_name_t'
   90 |         gss_const_name_t input_name,
      |         ^
vendor/github.com/apcera/gssapi/name.go:95:16: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   95 |                 OM_uint32 *, gss_const_name_t, const gss_OID, gss_name_t *)
      |                              ^
      |                              int
2 errors generated.

make: *** [build] Error 1

% sw_vers
ProductName:		macOS
ProductVersion:		26.4
BuildVersion:		25E246

% % go version
go version go1.26.1 darwin/arm64

% clang --version
Apple clang version 21.0.0 (clang-2100.0.123.102)
Target: arm64-apple-darwin25.4.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

/remove-lifecycle rotten

[tchap]

It seems the issue happens only on Apple Silicon machines, because Homebrew uses a different path from the ones hard-coded in the gssapi library to be included automatically. I will attend to this issue.

[tchap]

/assign

[tchap]

Hi guys, I will try to find somebody to test this, but if you have a spare moment, feel free to try #2246 , that would help to get this merged quickly 🙏🏻