[PR PATCH] common: unset CMAKE_GENERATOR before sourcing templates

[JamiKettunen <JamiKettunen@users.noreply.github.com>]

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There is a new pull request by JamiKettunen against master on the void-packages repository

https://github.com/JamiKettunen/void-packages unset-CMAKE_GENERATOR
https://github.com/void-linux/void-packages/pull/37413

common: unset CMAKE_GENERATOR before sourcing templates
When building dependencies of packages this has to be unset to avoid using e.g. `CMAKE_GENERATOR="Unix Makefiles"` for a package which expected to build with the default of `make_cmd=ninja`, and would subsequently fail with `ninja: error: loading 'build.ninja': No such file or directory` during `do_build()` if `do_configure()` generated a Makefile instead of a
build.ninja file.

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A patch file from https://github.com/void-linux/void-packages/pull/37413.patch is attached

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From 6d25aff0eeb828898a38037ecd64fd5a74e3bdbd Mon Sep 17 00:00:00 2001
From: Jami Kettunen <jami.kettunen@protonmail.com>
Date: Sun, 5 Jun 2022 02:48:41 +0300
Subject: [PATCH] common: unset CMAKE_GENERATOR before sourcing templates

When building dependencies of packages this has to be unset to avoid
using e.g. CMAKE_GENERATOR="Unix Makefiles" for a package which expected
to build with the default of make_cmd=ninja, and would subsequently fail
with "ninja: error: loading 'build.ninja': No such file or directory"
during do_build() if do_configure() generated a Makefile instead of a
build.ninja file.
---
 common/environment/setup/sourcepkg.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common/environment/setup/sourcepkg.sh b/common/environment/setup/sourcepkg.sh
index e0e16d7915cb..e1bbce7491c5 100644
--- a/common/environment/setup/sourcepkg.sh
+++ b/common/environment/setup/sourcepkg.sh
@@ -8,6 +8,7 @@ unset -v configure_script configure_args wrksrc build_wrksrc create_wrksrc
 unset -v make_build_args make_check_args make_install_args
 unset -v make_build_target make_check_target make_install_target
 unset -v make_cmd meson_cmd gem_cmd fetch_cmd make_check_pre
+unset -v CMAKE_GENERATOR
 unset -v python_version stackage
 unset -v cmake_builddir meson_builddir
 unset -v meson_crossfile