CI: use absolute path for zig lib dir

Workaround for #12685

ci/azure/macos_script

@@ -49,7 +49,7 @@ unset CXX
 make $JOBS install
 
 stage3-release/bin/zig build test docs \
-  --zig-lib-dir ../lib \
+  --zig-lib-dir "$(pwd)/../lib" \
   -Denable-macos-sdk \
   -Dstatic-llvm \
   --search-prefix "$PREFIX"

ci/azure/pipelines.yml

@@ -60,7 +60,6 @@ jobs:
     displayName: 'Build'
 
   - pwsh: |
-      Set-Variable -Name ZIGLIBDIR -Value "$(Get-Location)\lib"
       Set-Variable -Name ZIGINSTALLDIR -Value "$(Get-Location)\stage3-release"
 
       function CheckLastExitCode {
@@ -72,7 +71,6 @@ jobs:
 
       & "$ZIGINSTALLDIR\bin\zig.exe" build test docs `
         --search-prefix "$ZIGPREFIXPATH" `
-        --zig-lib-dir "$ZIGLIBDIR" `
         -Dstatic-llvm `
         -Dskip-non-native `
         -Dskip-stage2-tests

ci/srht/freebsd_script

@@ -56,7 +56,7 @@ ZIG_LIBC="$ZIG_LIBC_TXT" samu install
 
 # Here we skip some tests to save time.
 stage3/bin/zig build test docs \
-  --zig-lib-dir ../lib \
+  --zig-lib-dir "$(pwd)/../lib" \
   -Dstatic-llvm \
   --search-prefix "$PREFIX" \
   -Dskip-stage1 \

ci/zinc/linux_test_stage3_debug

@@ -56,7 +56,7 @@ stage3/bin/zig build test \
   -Dstatic-llvm \
   -Dtarget=native-native-musl \
   --search-prefix "$DEPS_LOCAL" \
-  --zig-lib-dir ../lib
+  --zig-lib-dir "$(pwd)/../lib"
 
 # Explicit exit helps show last command duration.
 exit

ci/zinc/linux_test_stage3_release

@@ -41,14 +41,14 @@ ninja install
   -Dstatic-llvm \
   -Dtarget=native-native-musl \
   --search-prefix "$DEPS_LOCAL" \
-  --zig-lib-dir ../lib
+  --zig-lib-dir "$(pwd)/../lib"
 
 # Produce the experimental std lib documentation.
 mkdir -p "$RELEASE_STAGING/docs/std"
 "$RELEASE_STAGING/bin/zig" test ../lib/std/std.zig \
   -femit-docs=$RELEASE_STAGING/docs/std \
   -fno-emit-bin \
-  --zig-lib-dir ../lib
+  --zig-lib-dir "$(pwd)/../lib"
 
 cp ../LICENSE $RELEASE_STAGING/
 cp ../zig-cache/langref.html $RELEASE_STAGING/docs/