[PR PATCH] flatbuffers: update to 2.0.0

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

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

https://github.com/marmeladema/void-packages flatbuffers-2.0.0
https://github.com/void-linux/void-packages/pull/33319

flatbuffers: update to 2.0.0
<!-- Mark items with [x] where applicable -->

#### Have the results of the proposed changes been tested?
- [x] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me

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#### Does it build and run successfully? 
(Please choose at least one native build and, if supported, at least one cross build. More are better.)
- [x] I built this PR locally for my native architecture, (x86-64)
- [ ] I built this PR locally for these architectures (if supported. mark crossbuilds):
  - [ ] aarch64-musl
  - [ ] armv7l
  - [ ] armv6l-musl


A patch file from https://github.com/void-linux/void-packages/pull/33319.patch is attached

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From b61a72cb0bd3519d191228f8ec45e65b52df71cd Mon Sep 17 00:00:00 2001
From: Elie ROUDNINSKI <xademax@gmail.com>
Date: Mon, 4 Oct 2021 18:01:45 +0100
Subject: [PATCH] flatbuffers: update to 2.0.0

---
 srcpkgs/flatbuffers/template | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/srcpkgs/flatbuffers/template b/srcpkgs/flatbuffers/template
index 86c89090cc94..6f23a84a56ff 100644
--- a/srcpkgs/flatbuffers/template
+++ b/srcpkgs/flatbuffers/template
@@ -1,6 +1,6 @@
 # Template file for 'flatbuffers'
 pkgname=flatbuffers
-version=1.12.0
+version=2.0.0
 revision=1
 build_style=cmake
 short_desc="Memory efficient serialization library"
@@ -8,7 +8,7 @@ maintainer="Elie ROUDNINSKI <xademax@gmail.com>"
 license="Apache-2.0"
 homepage="https://google.github.io/flatbuffers/"
 distfiles="https://github.com/google/${pkgname}/archive/v${version}.tar.gz"
-checksum=62f2223fb9181d1d6338451375628975775f7522185266cd5296571ac152bc45
+checksum=9ddb9031798f4f8754d00fca2f1a68ecf9d0f83dfac7239af1311e4fd9a565c4
 
 if [ "$CROSS_BUILD" ]; then
 	# Disable tests to prevent executing target binaries on host
@@ -19,7 +19,7 @@ case "$XBPS_TARGET_MACHINE" in
 	*-musl) configure_args+=" -DFLATBUFFERS_LOCALE_INDEPENDENT=0";;
 esac
 
-CXXFLAGS="-Wno-class-memaccess -Wno-stringop-overflow"
+CXXFLAGS="-O"
 
 flatbuffers-devel_package() {
 	short_desc+=" - development files"
@@ -28,5 +28,6 @@ flatbuffers-devel_package() {
 		vmove usr/include
 		vmove usr/lib/cmake
 		vmove usr/lib/libflatbuffers.a
+		vmove usr/lib/pkgconfig/flatbuffers.pc
 	}
 }