https://github.com/audacity/audacity/commit/6edaa3f26b34adc65c109c1a5a85923e04330e2d
https://github.com/audacity/audacity/pull/4918

From 6edaa3f26b34adc65c109c1a5a85923e04330e2d Mon Sep 17 00:00:00 2001
From: Dmitry Vedenko <dmitry@crsib.me>
Date: Mon, 7 Aug 2023 17:12:49 +0300
Subject: [PATCH] Fixes RapidJSON missing from Linux builds

---
 .../cmake-modules/dependencies/rapidjson.cmake    | 15 +++++++++++++--
 linux/packages/arch/dependencies.sh               |  1 +
 linux/packages/fedora34/dependencies.sh           |  1 +
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/cmake-proxies/cmake-modules/dependencies/rapidjson.cmake b/cmake-proxies/cmake-modules/dependencies/rapidjson.cmake
index c44aad81b8e4..ba95962a6eb6 100644
--- a/cmake-proxies/cmake-modules/dependencies/rapidjson.cmake
+++ b/cmake-proxies/cmake-modules/dependencies/rapidjson.cmake
@@ -1,7 +1,18 @@
 # CCI pakage appears to set the wrong value for the `cmake_target_name`
 
-if(${_OPT}use_rapidjson STREQUAL "local")
+if(NOT ${_OPT}use_rapidjson STREQUAL "off")
    if(NOT TARGET rapidjson::rapidjson)
-      add_library( rapidjson::rapidjson ALIAS rapidjson )
+      if(TARGET rapidjson)
+         add_library( rapidjson::rapidjson ALIAS rapidjson )
+      else()
+         # At least on Arch RapidJSONConfig.cmake does not define a target at all
+         # so we have to do it ourselves
+         add_library( rapidjson::rapidjson INTERFACE IMPORTED GLOBAL)
+         if (RAPIDJSON_INCLUDE_DIRS )
+            target_include_directories( rapidjson::rapidjson INTERFACE ${RAPIDJSON_INCLUDE_DIRS} )
+         elseif(RapidJSON_INCLUDE_DIR)
+            target_include_directories( rapidjson::rapidjson INTERFACE ${RapidJSON_INCLUDE_DIR} )
+         endif()
+      endif()
    endif()
 endif()
diff --git a/linux/packages/arch/dependencies.sh b/linux/packages/arch/dependencies.sh
index d34012442efd..8aa8792057d4 100755
--- a/linux/packages/arch/dependencies.sh
+++ b/linux/packages/arch/dependencies.sh
@@ -44,6 +44,7 @@ deps=(
    wavpack
    wxwidgets-gtk3
    vst3sdk
+   rapidjson
 )
 
 pacman -Syu --noconfirm \
diff --git a/linux/packages/fedora34/dependencies.sh b/linux/packages/fedora34/dependencies.sh
index 8f6ce8ff2eb8..1e039612b095 100755
--- a/linux/packages/fedora34/dependencies.sh
+++ b/linux/packages/fedora34/dependencies.sh
@@ -54,6 +54,7 @@ deps=(
    mesa-libEGL-devel
    mpg123-devel
    wavpack-devel
+   rapidjson
 )
 
 dnf install -y \