Preserve symlinks in the Soong prebuilt install steps for host binaries
and shared libs.
If a prebuilt module file is a symlink in the .intermediates tree it is
preserved when copied to the final install location. This preserves
symlinks to prebuilt binaries, so that they are run from their prebuilt
source location and can find libraries in relative paths from there.
Symlinks are converted to absolute, to not fail if they are relative in
the source tree.
Test: m clean && m droid dist checkbuild
with and without the change, then compare the lists of symlinks in
the out/ trees
Test: build/soong/soong_ui.bash --make-mode \
TARGET_PRODUCT=crosshatch_hwasan TARGET_BUILD_VARIANT=userdebug \
droid SANITIZE_TARGET=hwaddress \
continuous_instrumentation_tests_api_coverage \
continuous_native_tests device-tests platform_tests
check that libclang_rt.hwasan_static-aarch64-android.a isn't a
symlink in out/target/product/crosshatch/obj
Bug: 145934348
Change-Id: I7600e5b0754f8ea6cd0ffc8e1ba6d39153f182aa
diff --git a/core/base_rules.mk b/core/base_rules.mk
index 7397470..2bc7f08 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -515,7 +515,11 @@
$(LOCAL_INSTALLED_MODULE): PRIVATE_POST_INSTALL_CMD := $(LOCAL_POST_INSTALL_CMD)
$(LOCAL_INSTALLED_MODULE): $(LOCAL_BUILT_MODULE)
@echo "Install: $@"
+ifeq ($(LOCAL_MODULE_MAKEFILE),$(SOONG_ANDROID_MK))
+ $(copy-file-or-link-to-new-target)
+else
$(copy-file-to-new-target)
+endif
$(PRIVATE_POST_INSTALL_CMD)
endif
diff --git a/core/definitions.mk b/core/definitions.mk
index 2bf1ba6..2aff488 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2551,6 +2551,18 @@
$(hide) cp $< $@
endef
+# The same as copy-file-to-new-target, but preserve symlinks. Symlinks are
+# converted to absolute to not break.
+define copy-file-or-link-to-new-target
+@mkdir -p $(dir $@)
+$(hide) rm -f $@
+$(hide) if [ -h $< ]; then \
+ ln -s $$(realpath $<) $@; \
+else \
+ cp $< $@; \
+fi
+endef
+
# Copy a prebuilt file to a target location.
define transform-prebuilt-to-target
@echo "$($(PRIVATE_PREFIX)DISPLAY) Prebuilt: $(PRIVATE_MODULE) ($@)"
@@ -2563,6 +2575,13 @@
$(copy-file-to-target-strip-comments)
endef
+# Copy a prebuilt file to a target location, but preserve symlinks rather than
+# dereference them.
+define copy-or-link-prebuilt-to-target
+@echo "$($(PRIVATE_PREFIX)DISPLAY) Prebuilt: $(PRIVATE_MODULE) ($@)"
+$(copy-file-or-link-to-new-target)
+endef
+
# Copy a list of files/directories to target location, with sub dir structure preserved.
# For example $(HOST_OUT_EXECUTABLES)/aapt -> $(staging)/bin/aapt .
# $(1): the source list of files/directories.
diff --git a/core/soong_cc_prebuilt.mk b/core/soong_cc_prebuilt.mk
index c9b742a..a0315a5 100644
--- a/core/soong_cc_prebuilt.mk
+++ b/core/soong_cc_prebuilt.mk
@@ -142,8 +142,16 @@
$(LOCAL_BUILT_MODULE): $(same_vndk_variants_stamp)
endif
+# Use copy-or-link-prebuilt-to-target for host executables and shared libraries,
+# to preserve symlinks to the source trees. They can then run directly from the
+# prebuilt directories where the linker can load their dependencies using
+# relative RUNPATHs.
$(LOCAL_BUILT_MODULE): $(LOCAL_PREBUILT_MODULE_FILE)
+ifeq ($(LOCAL_IS_HOST_MODULE) $(if $(filter EXECUTABLES SHARED_LIBRARIES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),true,),true true)
+ $(copy-or-link-prebuilt-to-target)
+else
$(transform-prebuilt-to-target)
+endif
ifneq ($(filter EXECUTABLES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),)
$(hide) chmod +x $@
endif
diff --git a/core/soong_rust_prebuilt.mk b/core/soong_rust_prebuilt.mk
index 804e37e..de6bafd 100644
--- a/core/soong_rust_prebuilt.mk
+++ b/core/soong_rust_prebuilt.mk
@@ -57,7 +57,11 @@
endif
$(LOCAL_BUILT_MODULE): $(LOCAL_PREBUILT_MODULE_FILE)
+ifeq ($(LOCAL_IS_HOST_MODULE) $(if $(filter EXECUTABLES SHARED_LIBRARIES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),true,),true true)
+ $(copy-or-link-prebuilt-to-target)
+else
$(transform-prebuilt-to-target)
+endif
ifneq ($(filter EXECUTABLES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),)
$(hide) chmod +x $@
endif