• HardcodedLLVMVersions

Certain ports hardcode which LLVM version they want. There are several cases: two common cases, and the uncommon cases.

these data are almost certainly incomplete.

How LLVM versions get set

By default, the Makevar LLVM_DEFAULT is globally defined by the ports infrastructure via Mk/bsd.default-versions.mk. Therefore, it should be under control of the user. MarkLinimon believes that this global Makevar should not be overridden in port Makefiles.

Some ports use the LLVM_DEFAULT Makevar, but some use their own, or, worse, hardcode a version number.

Ports That Hardcode LLVM version

This is a common case -- but see ObsoleteLLVMVersions for the maintenance hassles it causes.

In general these are symbolic definitions via LLVM_VER or similar.

Example:

LLVM_VER=            90
BUILD_DEPENDS+=      clang${LLVM_VER}:devel/llvm${LLVM_VER}

We should standardize on a variable name. In use: LLVM_VER LLVM_VERSION LLVMVER VBOX_LLVM_VER.

Ports That Hardcode Dependencies

This is a common case -- but should be folded into the above by factoring out the number into one definition as above.

Suboptimal:

BUILD_DEPENDS+=     clang90:devel/llvm90

Preferred (as above):

LLVM_VER=            90
BUILD_DEPENDS+=      clang${LLVM_VER}:devel/llvm${LLVM_VER}

(these are believed to be fixed as of 20191204)

Ports That Redefine CC / CPP / CXX

Some ports hardcode which version they want by redefining the CC and/or CPP and/or CXX Makevars. Please see HardcodedCCVersions.

In PR 229626 MarkLinimon claims that this is a bad implementation, and that the values instead should be passed via environment variables. However, that PR as yet has not received any attention.

Ports That Redefine LLVM_VERSION

MarkLinimon believes that this global Makevar should not be overridden in port Makefiles (see above).

Preferred usage:

.if <conditions>
LLVM_VER=            90
.else
LLVM_VER             ${LLVM_DEFAULT}
.endif
BUILD_DEPENDS+=      clang${LLVM_VER}:devel/llvm${LLVM_VER}

The following list has some overlap with the above.

Ports That Are Grossly Wrong

TODO document

textproc/castxml

CategoryPorts CategoryTodo