From ed862b95b2fb9fd14b26c43c53589d45e0f28246 Mon Sep 17 00:00:00 2001
From: Jan Janssen <medhefgo@web.de>
Date: Tue, 9 Aug 2022 10:36:40 +0200
Subject: [PATCH] ci: Add mold to build tests

---
 .github/workflows/build_test.sh  | 15 +++++++++++++--
 .github/workflows/build_test.yml |  2 +-
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/build_test.sh b/.github/workflows/build_test.sh
index 4e6f6a1af1b..7400dc17f30 100755
--- a/.github/workflows/build_test.sh
+++ b/.github/workflows/build_test.sh
@@ -45,6 +45,7 @@ PACKAGES=(
     libxkbcommon-dev
     libxtables-dev
     libzstd-dev
+    mold
     mount
     net-tools
     perl
@@ -134,11 +135,21 @@ for args in "${ARGS[@]}"; do
     if [[ "$LINKER" != lld ]]; then
         additional_meson_args="--fatal-meson-warnings"
     fi
+
+    # mold < 1.1 does not support LTO.
+    if dpkg --compare-versions "$(dpkg-query --showformat='${Version}' --show mold)" ge 1.1; then
+        fatal "Newer mold version detected, please remove this workaround."
+    elif [[ "$args" == *"-Db_lto=true"* ]]; then
+        LD="gold"
+    else
+        LD="$LINKER"
+    fi
+
     info "Checking build with $args"
     # shellcheck disable=SC2086
     if ! AR="$AR" \
-         CC="$CC" CC_LD="$LINKER" CFLAGS="-Werror" \
-         CXX="$CXX" CXX_LD="$LINKER" CXXFLAGS="-Werror" \
+         CC="$CC" CC_LD="$LD" CFLAGS="-Werror" \
+         CXX="$CXX" CXX_LD="$LD" CXXFLAGS="-Werror" \
          meson -Dtests=unsafe -Dslow-tests=true -Dfuzz-tests=true --werror \
                -Dnobody-group=nogroup $additional_meson_args \
                -Dcryptolib="${CRYPTOLIB:?}" $args build; then
diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index 9a0f8f9bd32..cd6937e3902 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -27,7 +27,7 @@ jobs:
         env:
           - { COMPILER: "gcc",   COMPILER_VERSION: "11", LINKER: "bfd",  CRYPTOLIB: "gcrypt"  }
           - { COMPILER: "gcc",   COMPILER_VERSION: "12", LINKER: "gold", CRYPTOLIB: "openssl" }
-          - { COMPILER: "clang", COMPILER_VERSION: "13", LINKER: "gold", CRYPTOLIB: "gcrypt"  }
+          - { COMPILER: "clang", COMPILER_VERSION: "13", LINKER: "mold", CRYPTOLIB: "gcrypt"  }
           - { COMPILER: "clang", COMPILER_VERSION: "14", LINKER: "lld",  CRYPTOLIB: "openssl" }
           - { COMPILER: "clang", COMPILER_VERSION: "15", LINKER: "bfd",  CRYPTOLIB: "auto"    }
     env: ${{ matrix.env }}