WIP: ci: run more programs in parallel mode

This should speed up the execution of each job in question.

Author: kmk3

.github/workflows/build-extra.yml

@@ -68,7 +68,7 @@ jobs:
         --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
-      run: make
+      run: make -j "$(nproc)"
     - name: make install
       run: sudo make install
     - name: make installcheck
@@ -103,7 +103,7 @@ jobs:
         --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: make
-      run: make
+      run: make -j "$(nproc)"
     - name: make install
       run: sudo make install
     - name: make installcheck

.github/workflows/check-c.yml

@@ -72,7 +72,7 @@ jobs:
         --enable-apparmor --enable-selinux
         || (cat config.log; exit 1)
     - name: scan-build
-      run: make scan-build
+      run: make -j "$(nproc)" scan-build
 
   cppcheck:
     runs-on: ubuntu-22.04
@@ -96,7 +96,7 @@ jobs:
       run: sudo apt-get install -qy cppcheck
     - name: configure
       run: >
-        ./configure CPPCHECK='cppcheck -q'
+        ./configure CPPCHECK="cppcheck -q -j'$(nproc)'"
         || (cat config.log; exit 1)
     - run: cppcheck --version
     - name: cppcheck
@@ -127,7 +127,7 @@ jobs:
       run: sudo apt-get install -qy cppcheck
     - name: configure
       run: >
-        ./configure CPPCHECK='cppcheck -q'
+        ./configure CPPCHECK="cppcheck -q -j'$(nproc)'"
         || (cat config.log; exit 1)
     - run: cppcheck --version
     - name: cppcheck-old