[PR PATCH] [WiP] build-style/cmake: use ninja as default generator

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

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

https://github.com/Johnnynator/void-packages cmake
https://github.com/void-linux/void-packages/pull/28304

[WiP] build-style/cmake: use ninja as default generator
<!-- Mark items with [x] where applicable -->

There are probably packages broken with it.

#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)

#### Have the results of the proposed changes been tested?
- [ ] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR

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A patch file from https://github.com/void-linux/void-packages/pull/28304.patch is attached

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From fb05b962d6b4b0e89d7bd420737694430dd7f5fe Mon Sep 17 00:00:00 2001
From: John Zimmermann <me@johnnynator.dev>
Date: Fri, 29 Jan 2021 16:24:17 +0100
Subject: [PATCH] build-style/cmake: use ninja as default generator

---
 common/build-style/cmake.sh             | 8 ++++----
 common/environment/build-style/cmake.sh | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/common/build-style/cmake.sh b/common/build-style/cmake.sh
index 3135508b8b0..b8b070dbf32 100644
--- a/common/build-style/cmake.sh
+++ b/common/build-style/cmake.sh
@@ -64,7 +64,7 @@ _EOF
 
 	# Override flags: https://gitlab.kitware.com/cmake/cmake/issues/19590
 	CFLAGS="${CFLAGS/ -pipe / }" CXXFLAGS="${CXXFLAGS/ -pipe / }" \
-		cmake ${cmake_args} ${configure_args} $(echo ${cmake_builddir}|sed \
+		cmake ${cmake_args} -GNinja ${configure_args} $(echo ${cmake_builddir}|sed \
 			-e 's|[^/]$|/|' -e 's|[^/]*||g' -e 's|/|../|g')
 
 	# Replace -isystem with -I for Qt4 and Qt5 packages
@@ -72,7 +72,7 @@ _EOF
 }
 
 do_build() {
-	: ${make_cmd:=make}
+	: ${make_cmd:=ninja}
 
 	cd ${cmake_builddir:=build}
 	${make_cmd} ${makejobs} ${make_build_args} ${make_build_target}
@@ -92,14 +92,14 @@ do_check() {
 		fi
 	fi
 
-	: ${make_cmd:=make}
+	: ${make_cmd:=ninja}
 	: ${make_check_target:=test}
 
 	CTEST_OUTPUT_ON_FAILURE=TRUE ${make_cmd} ${make_check_args} ${make_check_target}
 }
 
 do_install() {
-	: ${make_cmd:=make}
+	: ${make_cmd:=ninja}
 	: ${make_install_target:=install}
 
 	cd ${cmake_builddir:=build}
diff --git a/common/environment/build-style/cmake.sh b/common/environment/build-style/cmake.sh
index 25bd8a388ec..c9e4d896159 100644
--- a/common/environment/build-style/cmake.sh
+++ b/common/environment/build-style/cmake.sh
@@ -1,5 +1,5 @@
 if [ "$CHROOT_READY" ]; then
 	if [[ "$hostmakedepends" != *"cmake-bootstrap"* ]]; then
-		hostmakedepends+=" cmake"
+		hostmakedepends+=" cmake ninja"
 	fi
 fi