diff --git a/.github/workflows/build-spike.yml b/.github/workflows/build-spike.yml
index c4410c9bed8..15990eec920 100644
--- a/.github/workflows/build-spike.yml
+++ b/.github/workflows/build-spike.yml
@@ -6,7 +6,7 @@ on:
 jobs:
   verilator:
     name: Build Spike
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       TOOL_NAME: spike
       TOOL_VERSION: d70ea67d
diff --git a/.github/workflows/build-verilator.yml b/.github/workflows/build-verilator.yml
index 91397d650a9..dc81bef9c9f 100644
--- a/.github/workflows/build-verilator.yml
+++ b/.github/workflows/build-verilator.yml
@@ -6,7 +6,7 @@ on:
 jobs:
   verilator:
     name: Build Verilator
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         include:
diff --git a/.github/workflows/gh-pages-pr-closed.yml b/.github/workflows/gh-pages-pr-closed.yml
index a251c5caab6..68274f53209 100644
--- a/.github/workflows/gh-pages-pr-closed.yml
+++ b/.github/workflows/gh-pages-pr-closed.yml
@@ -10,7 +10,7 @@ jobs:
     name: PR Remove
     concurrency:
       group: gh-pages
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       contents: write
     steps:
diff --git a/.github/workflows/gh-pages-pr-comment.yml b/.github/workflows/gh-pages-pr-comment.yml
index 2f4028c1f6d..ff84a095d34 100644
--- a/.github/workflows/gh-pages-pr-comment.yml
+++ b/.github/workflows/gh-pages-pr-comment.yml
@@ -12,7 +12,7 @@ env:
 jobs:
   comment:
     name: PR Comment
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       pull-requests: write
     if: ${{ github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success' }}
diff --git a/.github/workflows/gh-pages-pr-deploy.yml b/.github/workflows/gh-pages-pr-deploy.yml
index 6c1eb9ff59e..4d9c56713e0 100644
--- a/.github/workflows/gh-pages-pr-deploy.yml
+++ b/.github/workflows/gh-pages-pr-deploy.yml
@@ -11,7 +11,7 @@ jobs:
     name: PR Deploy
     concurrency:
       group: gh-pages
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       contents: write
     if: ${{ github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success' }}
diff --git a/.github/workflows/gh-pages-pr-remove.yml b/.github/workflows/gh-pages-pr-remove.yml
index 104de169e3b..b2ff3a78a6e 100644
--- a/.github/workflows/gh-pages-pr-remove.yml
+++ b/.github/workflows/gh-pages-pr-remove.yml
@@ -14,7 +14,7 @@ jobs:
     name: PR Remove Deploy
     concurrency:
       group: gh-pages
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       contents: write
     steps:
diff --git a/.github/workflows/publish-webpage.yml b/.github/workflows/publish-webpage.yml
index c00dbf953d8..36d386e3594 100644
--- a/.github/workflows/publish-webpage.yml
+++ b/.github/workflows/publish-webpage.yml
@@ -8,7 +8,7 @@ jobs:
     name: Build and Main Deploy
     concurrency:
       group: gh-pages
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       contents: write
     steps:
diff --git a/.github/workflows/report-coverage.yml b/.github/workflows/report-coverage.yml
index a3ceded6b00..e4594fc66a8 100644
--- a/.github/workflows/report-coverage.yml
+++ b/.github/workflows/report-coverage.yml
@@ -7,7 +7,7 @@ jobs:
 
   coverage-report:
     name: Coverage report
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       DEBIAN_FRONTEND: "noninteractive"
 
diff --git a/.github/workflows/test-regression.yml b/.github/workflows/test-regression.yml
index e84d0352976..ad53f83f615 100644
--- a/.github/workflows/test-regression.yml
+++ b/.github/workflows/test-regression.yml
@@ -7,7 +7,7 @@ jobs:
 
   regression-tests:
     name: Regression tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         bus: ["axi", "ahb"]
diff --git a/.github/workflows/test-riscof.yml b/.github/workflows/test-riscof.yml
index 21eaf9a12b5..c27036df0e8 100644
--- a/.github/workflows/test-riscof.yml
+++ b/.github/workflows/test-riscof.yml
@@ -7,7 +7,7 @@ jobs:
 
   tests:
     name: Run RISCOF tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/test-riscv-dv.yml b/.github/workflows/test-riscv-dv.yml
index 5b46f0fd970..a79826b4b8f 100644
--- a/.github/workflows/test-riscv-dv.yml
+++ b/.github/workflows/test-riscv-dv.yml
@@ -10,7 +10,7 @@ jobs:
 #--------------#
   renode:
     name: Download Renode
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       CCACHE_DIR: "/opt/veer-el2/.cache/"
       DEBIAN_FRONTEND: "noninteractive"
@@ -55,7 +55,7 @@ jobs:
 #--------------#
   veer-iss:
     name: Build VeeR-ISS
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       CCACHE_DIR: "/opt/veer-el2/.cache/"
       DEBIAN_FRONTEND: "noninteractive"
@@ -106,7 +106,7 @@ jobs:
 #--------------#
   generate-config:
     name: Generate configs
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     outputs:
       test-types: ${{ steps.test-types.outputs.tests }}
       test-include-generate: ${{ steps.test-types.outputs.include-generate }}
@@ -192,7 +192,7 @@ jobs:
 
   run-tests:
     name: Run RISC-V DV tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs: [ veer-iss, renode, generate-config, generate-code ]
     strategy:
       fail-fast: false
diff --git a/.github/workflows/test-uarch.yml b/.github/workflows/test-uarch.yml
index 4d77150f900..7d27cd53e90 100644
--- a/.github/workflows/test-uarch.yml
+++ b/.github/workflows/test-uarch.yml
@@ -9,7 +9,7 @@ env:
 jobs:
   lint:
     name: Lint microarchitectural tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Setup repository
         uses: actions/checkout@v3
@@ -34,7 +34,7 @@ jobs:
           popd
   tests:
     name: Microarchitectural tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         test:
diff --git a/.github/workflows/test-uvm.yml b/.github/workflows/test-uvm.yml
index a972ae1ec71..61a53a358e4 100644
--- a/.github/workflows/test-uvm.yml
+++ b/.github/workflows/test-uvm.yml
@@ -6,7 +6,7 @@ on:
 jobs:
   tests:
     name: UVM tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       CCACHE_DIR: "/opt/uvm/.cache/"
       VERILATOR_VERSION: uvm
diff --git a/.github/workflows/test-verification.yml b/.github/workflows/test-verification.yml
index b54a0c22ded..5e59428d3c8 100644
--- a/.github/workflows/test-verification.yml
+++ b/.github/workflows/test-verification.yml
@@ -9,7 +9,7 @@ env:
 jobs:
   tests:
     name: Verification tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         test: ["test_pyuvm"]
diff --git a/.github/workflows/verible-format.yml b/.github/workflows/verible-format.yml
index 466966268bd..56069707809 100644
--- a/.github/workflows/verible-format.yml
+++ b/.github/workflows/verible-format.yml
@@ -5,7 +5,7 @@ on:
 
 jobs:
   format-review:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       checks: write
       contents: read
diff --git a/.github/workflows/verible-lint.yml b/.github/workflows/verible-lint.yml
index d023a762eb4..eda4cd8d831 100644
--- a/.github/workflows/verible-lint.yml
+++ b/.github/workflows/verible-lint.yml
@@ -5,7 +5,7 @@ on:
 
 jobs:
   lint-review:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       checks: write
       contents: read
diff --git a/README.md b/README.md
index a70fc463431..b8991565aa6 100644
--- a/README.md
+++ b/README.md
@@ -37,8 +37,8 @@ installed so that it can be used to prepare RISCV binaries to run.
 ## Quickstart guide
 
 1. Clone the repository, clone submodules with `git submodule update --init --recursive`
-1. Setup `RV_ROOT` to point to the path in your local filesystem
-1. Determine your configuration (optional)
+1. Set `RV_ROOT` to the root path of this repository in your filesystem
+1. Apply optional configuration (see _Configurations_ section)
 1. Run `make` with `tools/Makefile`
 
 ## Release Notes for this version
diff --git a/tools/Makefile b/tools/Makefile
index 430b6d58414..6fe4066a4a4 100755
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -121,9 +121,8 @@ defines += ${RV_ROOT}/design/include/el2_def.sv
 defines += $(BUILD_DIR)/el2_pdef.vh
 includes = -I${BUILD_DIR}
 
-# CFLAGS for verilator generated Makefiles. Without -std=c++11 it
-# complains for `auto` variables
-CFLAGS += -std=c++11
+# Verilator supports only C++14 and newer
+CFLAGS += -std=c++14
 
 # Optimization for better performance; alternative is nothing for
 # slower runtime (faster compiles) -O2 for faster runtime (slower
diff --git a/tools/picolibc.mk b/tools/picolibc.mk
index ddb7e48f94d..9cceaf2fec1 100644
--- a/tools/picolibc.mk
+++ b/tools/picolibc.mk
@@ -43,7 +43,7 @@ $(INSTALL_PATH)/picolibc.specs: $(BUILD_PATH)/cross.txt | $(BUILD_PATH)
 
 	cd $(PICOLIBC_PATH) && meson $(BUILD_PATH) \
 		-Dmultilib=true \
-		-Dmultilib-list=rv32imac/ilp32 \
+		-Dmultilib-list=rv32imc/ilp32 \
 		-Dpicocrt=false \
 		-Datomic-ungetc=false \
 		-Dthread-local-storage=false \