zlib not static

source/Dockerfile.multiarch

@@ -8,6 +8,8 @@ RUN apk add --no-cache \
     git \
     linux-headers \
     musl-dev \
+    zlib \
+    zlib-dev \
     zlib-static \
     bzip2-static \
     xz-static \
@@ -34,9 +36,8 @@ echo "Setting up build directory..."\n\
 mkdir -p /build/ccache\n\
 mkdir -p /build/build_${TARGETARCH}\n\
 \n\
-echo "Checking zlib installation..."\n\
-ls -la /usr/lib/libz* || true\n\
-pkg-config --libs zlib || true\n\
+echo "Checking static libraries..."\n\
+ls -la /usr/lib/libz.a /usr/lib/libstdc++.a /usr/lib/libc.a || true\n\
 \n\
 echo "Setting up ccache..."\n\
 export CCACHE_DIR=/build/ccache\n\
@@ -53,9 +54,10 @@ cmake /source -G Ninja -DCMAKE_BUILD_TYPE=Release \
     -DCMAKE_POLICY_DEFAULT_CMP0074=NEW \
     -DZLIB_INCLUDE_DIR=/usr/include \
     -DZLIB_USE_STATIC_LIBS=TRUE \
-    -DCMAKE_EXE_LINKER_FLAGS="-static -static-libgcc -static-libstdc++" \
-    -DCMAKE_C_FLAGS="-static" \
-    -DCMAKE_CXX_FLAGS="-static" 2>&1 | tee cmake.log\n\
+    -DCMAKE_EXE_LINKER_FLAGS="-Wl,-Bstatic -lz -lstdc++ -static-libgcc" \
+    -DCMAKE_C_FLAGS="-fPIC" \
+    -DCMAKE_CXX_FLAGS="-fPIC" \
+    -DCMAKE_FIND_LIBRARY_CUSTOM_LIB_SUFFIX=".a" 2>&1 | tee cmake.log\n\
 \n\
 echo "Starting build..."\n\
 ninja -v -j$(nproc) 2>&1 | tee build.log\n\