Tmp: Select newest version of Xcode and additional mirror

- Add https://joliv.et to overcome ljll network problems

Author: simonlegrand

.github/workflows/full-mpich.yml

@@ -82,24 +82,32 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      # Remove homebrew LLVM compiler, and use most recent Xcode development
+      # tools
       - name: Set environment
         run: |
-          if [ "${{ matrix.version }}" -lt "15" ]; then
-            echo "CXX=g++ -Wl,-ld_classic -Wl,-commons,use_dylibs -Wno-unused-command-line-argument" >> $GITHUB_ENV
-            echo "LLVM_VERSION=15" >> $GITHUB_ENV
-          elif [ "${{ matrix.version }}" -eq "15" ]; then
+          if [ "${{ matrix.version }}" -eq "15" ]; then
             echo "LLVM_VERSION=18" >> $GITHUB_ENV
+            sudo xcode-select -s /Applications/Xcode_16.2.app/Contents/Developer
+          elif [ "${{ matrix.version }}" -eq "14" ]; then
+            echo "LLVM_VERSION=15" >> $GITHUB_ENV
+            sudo xcode-select -s /Applications/Xcode_16.2.app/Contents/Developer
+          elif [ "${{ matrix.version }}" -eq "13" ]; then
+            echo "LLVM_VERSION=15" >> $GITHUB_ENV
+            sudo xcode-select -s /Applications/Xcode_15.2.app/Contents/Developer
+            echo "CXX=g++ -Wl,-ld_classic -Wl,-commons,use_dylibs -Wno-unused-command-line-argument" >> $GITHUB_ENV
           fi
 
+      # Check https://github.com/actions/runner-images/tree/main/images/macos
+      # to see what is already installed in images.
       - name: Install
         run: |
-          brew install gcc m4 git bison hdf5 cmake wget autoconf automake
+          brew install m4 git bison hdf5 wget autoconf automake
           brew remove llvm@$LLVM_VERSION
 
       - name: Symlink GCC & Fortran
         run: ./etc/actions/macos/link_fortran.sh "$(uname -p)"
 
-                
       - name: Configure
         run: |
           autoreconf -i

3rdparty/getall

@@ -268,7 +268,14 @@ sub downloadone{
 			print "Try (2 times)  other site: $url\n";
 			system $cmd;
 			if ($?){
-				$errors.="ERROR: $cmd FAILED\n"
+			       print "Download 3 times failed from $url of $pkg\n";
+			       my $url="https://joliv.et/freefem/pkg/$pkg";
+			       my $cmd="../bin/build/download $url pkg/$pkg $opts";
+			       print "Try (2 times)  other site: $url\n";
+			       system $cmd;
+			       if ($?){
+				      $errors.="ERROR: $cmd FAILED\n"
+			       }
 			}
 		}