GHA Alpine: Link remaining lib{zstd,z,c} statically too

Author: kinke

.github/actions/3-build-native/action.yml

@@ -31,7 +31,3 @@ runs:
 
     - run: ../build/bin/ldc2 --version
       shell: bash
-
-    - run: ldd ../build/bin/ldc2
-      if: runner.os == 'Linux'
-      shell: bash

.github/actions/7-package/action.yml

@@ -24,6 +24,13 @@ runs:
         fi
         echo "DMD=$DMD" >> $GITHUB_ENV
 
+    - name: 'Alpine: Set DFLAGS environment variable (-Xcc=-static)' # for fully statically linked dub etc.
+      if: inputs.os == 'alpine'
+      shell: bash
+      run: |
+        set -eux
+        echo "DFLAGS=-Xcc=-static${DFLAGS:+ $DFLAGS}" >> $GITHUB_ENV
+
     - name: Build & copy dub
       shell: bash
       run: |
@@ -85,6 +92,17 @@ runs:
           ../installed/bin/reggae --version -b ninja
         fi
 
+    - name: 'Linux: List executable dependencies'
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        set -euxo pipefail
+        cd ../installed/bin
+        for i in *; do
+          ls -lh $i
+          readelf -d $i | grep NEEDED || true
+        done
+
     - name: Pack installation dir
       shell: bash
       run: |

.github/workflows/main.yml

@@ -67,9 +67,9 @@ jobs:
               -DCOMPILER_RT_LIBDIR_OS=linux
               -DLDC_INSTALL_LLVM_RUNTIME_LIBS_ARCH=x86_64
               -DTEST_COMPILER_RT_LIBRARIES="profile;lsan;asan;msan;fuzzer"
-              -DCMAKE_EXE_LINKER_FLAGS=-static-libstdc++
+              -DCMAKE_EXE_LINKER_FLAGS=-static
               -DJITRT_EXTRA_LDFLAGS=-static-libstdc++
-              -DD_COMPILER_FLAGS="-O -flto=full"
+              -DD_COMPILER_FLAGS="-O -flto=full -Xcc=-static"
             # FIXME: -defaultlib=phobos2-ldc-lto,druntime-ldc-lto
             with_pgo: false
 

runtime/CMakeLists.txt

@@ -136,9 +136,6 @@ if("${C_SYSTEM_LIBS}" STREQUAL "AUTO")
             set(C_SYSTEM_LIBS m c)
         elseif("${TARGET_SYSTEM}" MATCHES "Linux")
             set(C_SYSTEM_LIBS m pthread rt dl)
-            if("${TARGET_SYSTEM}" MATCHES "musl")
-                list(APPEND C_SYSTEM_LIBS "unwind")
-            endif()
         elseif("${TARGET_SYSTEM}" MATCHES "FreeBSD")
             set(C_SYSTEM_LIBS m pthread execinfo z)
         else()