diff --git a/.github/workflows/build-extra.yml b/.github/workflows/build-extra.yml
index b0752042de4..e18ab9f0c62 100644
--- a/.github/workflows/build-extra.yml
+++ b/.github/workflows/build-extra.yml
@@ -63,8 +63,9 @@ jobs:
       run: ./ci/printenv.sh
     - name: configure
       run: >
-        CC=clang-14 ./configure --enable-fatal-warnings --enable-apparmor
-        --enable-selinux
+        ./configure CC=clang-14
+        --prefix=/usr --enable-fatal-warnings
+        --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
       run: make
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f33670e6357..a005fefd7dc 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -79,8 +79,9 @@ jobs:
       run: ./ci/printenv.sh
     - name: configure
       run: >
-        CC=gcc-12 ./configure --prefix=/usr --enable-fatal-warnings
-        --enable-analyzer --enable-apparmor --enable-selinux
+        ./configure CC=gcc-12
+        --prefix=/usr --enable-fatal-warnings --enable-analyzer
+        --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
       run: make
diff --git a/.github/workflows/check-c.yml b/.github/workflows/check-c.yml
index dd841c394b1..49c9b38a7b8 100644
--- a/.github/workflows/check-c.yml
+++ b/.github/workflows/check-c.yml
@@ -68,7 +68,8 @@ jobs:
     - name: configure
       run: >
         ./configure CC=clang-14 SCAN_BUILD=scan-build-14
-        --enable-fatal-warnings --enable-apparmor --enable-selinux
+        --prefix=/usr --enable-fatal-warnings
+        --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: scan-build
       run: make scan-build
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3e7153c46dd..f0aeafc9a3d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -73,8 +73,9 @@ jobs:
       run: ./ci/printenv.sh
     - name: configure
       run: >
-        CC=gcc-12 ./configure --prefix=/usr --enable-fatal-warnings
-        --enable-analyzer --enable-apparmor --enable-selinux
+        ./configure CC=gcc-12
+        --prefix=/usr --enable-fatal-warnings --enable-analyzer
+        --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
       run: make -j "$(nproc)"
@@ -121,8 +122,9 @@ jobs:
       run: ./ci/printenv.sh
     - name: configure
       run: >
-        CC=gcc-12 ./configure --prefix=/usr --enable-fatal-warnings
-        --enable-analyzer --enable-apparmor --enable-selinux
+        ./configure CC=gcc-12
+        --prefix=/usr --enable-fatal-warnings --enable-analyzer
+        --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
       run: make -j "$(nproc)"
@@ -160,8 +162,9 @@ jobs:
       run: ./ci/printenv.sh
     - name: configure
       run: >
-        CC=gcc-12 ./configure --prefix=/usr --enable-fatal-warnings
-        --enable-analyzer --enable-apparmor --enable-selinux
+        ./configure CC=gcc-12
+        --prefix=/usr --enable-fatal-warnings --enable-analyzer
+        --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
       run: make -j "$(nproc)"
@@ -202,8 +205,9 @@ jobs:
       run: ./ci/printenv.sh
     - name: configure
       run: >
-        CC=gcc-12 ./configure --prefix=/usr --enable-fatal-warnings
-        --enable-analyzer --enable-apparmor --enable-selinux
+        ./configure CC=gcc-12
+        --prefix=/usr --enable-fatal-warnings --enable-analyzer
+        --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
       run: make -j "$(nproc)"
@@ -248,8 +252,9 @@ jobs:
       run: ./ci/printenv.sh
     - name: configure
       run: >
-        CC=gcc-12 ./configure --prefix=/usr --enable-fatal-warnings
-        --enable-analyzer --enable-apparmor --enable-selinux
+        ./configure CC=gcc-12
+        --prefix=/usr --enable-fatal-warnings --enable-analyzer
+        --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
       run: make -j "$(nproc)"
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8d4ed2dc5ec..71bb70b8250 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,7 +22,8 @@ build_ubuntu_package:
             | grep -Ev '^(Selecting|Preparing to unpack|Unpacking)'
         - ./ci/printenv.sh
         - ./configure || (cat config.log; exit 1)
-        - make deb
+        - make dist
+        - ./mkdeb.sh --enable-fatal-warnings
         - dpkg -i ./*.deb
         - make print-version
 
@@ -39,7 +40,8 @@ build_debian_package:
             | grep -Ev '^(Selecting|Preparing to unpack|Unpacking)'
         - ./ci/printenv.sh
         - ./configure || (cat config.log; exit 1)
-        - make deb
+        - make dist
+        - ./mkdeb.sh --enable-fatal-warnings
         - dpkg -i ./*.deb
         - make print-version
 
@@ -57,7 +59,9 @@ build_no_apparmor:
         - ./ci/printenv.sh
         - ./configure || (cat config.log; exit 1)
         - make dist
-        - ./mkdeb.sh --disable-apparmor
+        - >
+            ./mkdeb.sh --enable-fatal-warnings
+            --disable-apparmor
         - dpkg -i ./*.deb
         - make print-version
         - make print-version | grep -F 'AppArmor support is disabled'
@@ -70,7 +74,8 @@ build_redhat_package:
         - dnf install -y rpm-build gcc make
         - ./ci/printenv.sh
         - ./configure || (cat config.log; exit 1)
-        - make rpms
+        - make dist
+        - ./platform/rpm/mkrpm.sh --enable-fatal-warnings
         - rpm -i ./*.rpm
         - make print-version
 
@@ -82,7 +87,8 @@ build_fedora_package:
         - dnf install -y rpm-build gcc make
         - ./ci/printenv.sh
         - ./configure || (cat config.log; exit 1)
-        - make rpms
+        - make dist
+        - ./platform/rpm/mkrpm.sh --enable-fatal-warnings
         - rpm -i ./*.rpm
         - make print-version
 
@@ -94,7 +100,11 @@ build_src_package:
         - apk upgrade
         - apk add build-base linux-headers gawk
         - ./ci/printenv.sh
-        - ./configure --prefix=/usr || (cat config.log; exit 1)
+        # Note: Do not use ` --enable-fatal-warnings` because the build
+        # currently produces warnings on Alpine (see #6224).
+        - >
+            ./configure --prefix=/usr
+            || (cat config.log; exit 1)
         - make
         - make install-strip
         - make print-version
diff --git a/platform/rpm/mkrpm.sh b/platform/rpm/mkrpm.sh
index 0221fa60757..46bb90036ed 100755
--- a/platform/rpm/mkrpm.sh
+++ b/platform/rpm/mkrpm.sh
@@ -16,6 +16,8 @@ set -e
 name="$TARNAME"
 # Strip any trailing prefix from the version like -rc1 etc
 version="$(printf '%s\n' "$VERSION" | sed 's/\-.*//g')"
+
+# Note: rpmbuild itself already passes --prefix=/usr to ./configure
 config_opt="--disable-userns --disable-contrib-install $*"
 
 if [[ ! -f "platform/rpm/${name}.spec" ]]; then
diff --git a/test/compile/compile.sh b/test/compile/compile.sh
index 30bfe9e66fa..f3e5c4f33a2 100755
--- a/test/compile/compile.sh
+++ b/test/compile/compile.sh
@@ -81,7 +81,9 @@ tar -xJvf ../../"$DIST.tar.xz"
 mv "$DIST" firejail
 
 cd firejail || exit 1
-./configure --prefix=/usr --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test1
@@ -98,7 +100,10 @@ rm output-configure output-make
 print_title "${arr[2]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-dbusproxy --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-dbusproxy \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test2
@@ -115,7 +120,10 @@ rm output-configure output-make
 print_title "${arr[3]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-chroot --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-chroot \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test3
@@ -132,7 +140,10 @@ rm output-configure output-make
 print_title "${arr[4]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-firetunnel --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-firetunnel \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test4
@@ -149,7 +160,10 @@ rm output-configure output-make
 print_title "${arr[5]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-userns --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-userns \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test5
@@ -167,7 +181,10 @@ rm output-configure output-make
 print_title "${arr[6]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-network --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-network \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test6
@@ -184,7 +201,10 @@ rm output-configure output-make
 print_title "${arr[7]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-x11 --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-x11 \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test7
@@ -201,7 +221,10 @@ rm output-configure output-make
 print_title "${arr[8]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --enable-selinux --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --enable-selinux \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test8
@@ -218,7 +241,10 @@ rm output-configure output-make
 print_title "${arr[9]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-file-transfer --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-file-transfer \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test9
@@ -235,7 +261,10 @@ rm output-configure output-make
 print_title "${arr[10]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-whitelist --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-whitelist \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test10
@@ -252,7 +281,10 @@ rm output-configure output-make
 print_title "${arr[11]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-globalcfg --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-globalcfg \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test11
@@ -269,7 +301,10 @@ rm output-configure output-make
 print_title "${arr[12]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --enable-apparmor --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --enable-apparmor \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test12
@@ -286,7 +321,10 @@ rm output-configure output-make
 print_title "${arr[13]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --enable-busybox-workaround --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --enable-busybox-workaround \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test13
@@ -303,7 +341,10 @@ rm output-configure output-make
 print_title "${arr[14]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-overlayfs --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-overlayfs \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test14
@@ -320,7 +361,10 @@ rm output-configure output-make
 print_title "${arr[15]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-private-home --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-private-home \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test15
@@ -337,7 +381,10 @@ rm output-configure output-make
 print_title "${arr[16]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-man --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-man \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test16
@@ -354,7 +401,10 @@ rm output-configure output-make
 print_title "${arr[17]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-usertmpfs --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-usertmpfs \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test17
@@ -371,7 +421,10 @@ rm output-configure output-make
 print_title "${arr[18]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --disable-private-home --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --disable-private-home \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test18
@@ -388,7 +441,10 @@ rm output-configure output-make
 print_title "${arr[19]}"
 cd firejail || exit 1
 make distclean
-./configure --prefix=/usr --enable-ids --enable-fatal-warnings 2>&1 | tee ../output-configure
+./configure --prefix=/usr --enable-fatal-warnings \
+  --enable-ids \
+  2>&1 | tee ../output-configure
+
 make -j "$(nproc)" 2>&1 | tee ../output-make
 cd ..
 grep Warning output-configure output-make > ./report-test19