Auto merge of #19732 - gootorov:master, r=jdm

Update Gentoo Linux setup to include clang

<!-- Please describe your changes on the following line: -->While other Linux distributions include clang package as required in the setup section of README, Gentoo does not. This patch fixes it.
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- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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- [ ] There are tests for these changes OR
- [X] These changes do not require tests because it is a documentation fix

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1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 1293fbefd03..0fafbac6ed4 100644
--- a/README.md
+++ b/README.md
@@ -115,7 +115,7 @@ sudo pacman -S --needed base-devel git python2 python2-virtualenv python2-pip me
 sudo emerge net-misc/curl media-libs/freeglut \
     media-libs/freetype media-libs/mesa dev-util/gperf \
     dev-python/virtualenv dev-python/pip dev-libs/openssl \
-    x11-libs/libXmu media-libs/glu x11-base/xorg-server
+    x11-libs/libXmu media-libs/glu x11-base/xorg-server sys-devel/clang
 ```
 #### On Windows (MSVC)