More tweaks.

.github/workflows/regress.yml

@@ -24,10 +24,13 @@ jobs:
         include:
           - name: ubuntu-24.04-x64
             runner: ubuntu-24.04
+            make: make
           - name: ubuntu-24.04-arm64
             runner: ubuntu-24.04-arm
+            make: make
           - name: macos-26-arm64
             runner: macos-26
+            make: gmake
 
     steps:
       - name: checkout
@@ -44,6 +47,7 @@ jobs:
             build-essential \
             libevent-dev \
             libncurses-dev \
+            libutf8proc-dev
             pkg-config
 
       - name: dependencies
@@ -54,6 +58,7 @@ jobs:
             automake \
             bison \
             libevent \
+            make \
             ncurses \
             utf8proc \
             pkg-config
@@ -62,9 +67,9 @@ jobs:
         run: |
           sh autogen.sh
           ./configure --enable-utf8proc
-          make -j"$(getconf _NPROCESSORS_ONLN)"
+          ${{ matrix.make }} -j"$(getconf _NPROCESSORS_ONLN)"
 
       - name: test
         run: |
           cd regress
-          make
+          ${{ matrix.make }}