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Make it easy to build without crt0

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This commit is contained in:
topjohnwu 2024-02-24 22:32:22 -08:00
parent 47e6dd286d
commit 365b373480
3 changed files with 11 additions and 7 deletions
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1
build.py
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@ -421,6 +421,7 @@ def build_binary(args):
if "magiskinit" in args.target: if "magiskinit" in args.target:
flag += " B_INIT=1" flag += " B_INIT=1"
flag += " B_CRT0=1"
if flag: if flag:
dump_bin_header(args) dump_bin_header(args)

12
native/src/Android.mk
View File

@ -59,13 +59,9 @@ endif
ifdef B_INIT ifdef B_INIT
# -lc -lm is hardcoded in this variable, disable it
TARGET_LDLIBS :=
include $(CLEAR_VARS) include $(CLEAR_VARS)
LOCAL_MODULE := magiskinit LOCAL_MODULE := magiskinit
LOCAL_STATIC_LIBRARIES := \ LOCAL_STATIC_LIBRARIES := \
crt0 \
libbase \ libbase \
libpolicy \ libpolicy \
libxz \ libxz \
@ -80,6 +76,14 @@ LOCAL_SRC_FILES := \
init/selinux.cpp \ init/selinux.cpp \
init/init-rs.cpp init/init-rs.cpp
LOCAL_LDFLAGS := -static
ifdef B_CRT0
# -lc -lm is hardcoded in this variable, disable it
TARGET_LDLIBS :=
LOCAL_STATIC_LIBRARIES += crt0
endif
include $(BUILD_EXECUTABLE) include $(BUILD_EXECUTABLE)
endif endif

5
native/src/Application.mk
View File

@ -8,14 +8,13 @@ APP_PLATFORM := android-26
APP_THIN_ARCHIVE := true APP_THIN_ARCHIVE := true
APP_STRIP_MODE := none APP_STRIP_MODE := none
# magiskinit uses crt0 ifdef B_CRT0
ifdef B_INIT
# Disable all security and debugging features # Disable all security and debugging features
APP_CFLAGS += -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-stack-protector -U_FORTIFY_SOURCE APP_CFLAGS += -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-stack-protector -U_FORTIFY_SOURCE
APP_LDFLAGS += -Wl,-wrap,abort_message APP_LDFLAGS += -Wl,-wrap,abort_message
# Override output folder to make sure all dependencies are rebuilt with new CFLAGS # Override output folder to make sure all dependencies are rebuilt with new CFLAGS
NDK_APP_OUT := ./obj/init NDK_APP_OUT := ./obj/nolibc
endif endif