Run autoreconf in the main Linux build.

Author: dlemstra

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
     name: Build Linux
     container:
       image: ubuntu:20.04
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     strategy:
       fail-fast: false
@@ -34,12 +34,14 @@ jobs:
         set -e
         export DEBIAN_FRONTEND=noninteractive
         apt-get update -y
-        apt-get install -y autoconf make pkg-config ${{matrix.packages}}
+        apt-get install -y autoconf git libtool make pkg-config ${{matrix.packages}}
 
     - name: Configure ImageMagick
+      env:
+        CC: ${{ matrix.compiler }}
+        CFLAGS: -Wno-deprecated-declarations
       run: |
-        export CC=${{matrix.compiler}}
-        export CFLAGS="-Wno-deprecated-declarations"
+        autoreconf -fiv
         ./configure --with-quantum-depth=16 --enable-hdri=no --without-perl --prefix=/usr
 
     - name: Build ImageMagick