Android預設編譯的應用程式動态連結的一般都是PIE，前文“基于Android arm64 Linux got 調試”，每次調試都要檢視加載位址，于是就想能否編譯生成非PIE的應用程式。
/opt/android-.r9/external/hello$ mmm ./ showcommands >& | tee build.log
檢視build.log
prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-/bin/aarch64-linux-android-g++ -pie -nostdlib -Bdynamic -Wl,-dynamic-linker,/system/bin/linker64 -Wl,--gc-sections -Wl,-z,nocopyreloc -Lout/target/product/generic_arm64/obj/lib -Wl,-rpath-link=out/target/product/generic_arm64/obj/lib out/target/product/generic_arm64/obj/lib/crtbegin_dynamic.o out/target/product/generic_arm64/obj/EXECUTABLES/hello_intermediates/hello.o -Wl,--whole-archive -Wl,--no-whole-archive out/target/product/generic_arm64/obj/STATIC_LIBRARIES/libcompiler_rt-extras_intermediates/libcompiler_rt-extras.a prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-/bin/../lib/gcc/aarch64-linux-android/.x-google/../../../../aarch64-linux-android/lib/../lib64/libatomic.a prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-/bin/../lib/gcc/aarch64-linux-android/.x-google/libgcc.a -lutils -lcutils -lc++ -ldl -lc -lm -o out/target/product/generic_arm64/obj/EXECUTABLES/hello_intermediates/LINKED/hello -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--build-id=md5 -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,-maarch64linux -Wl,--hash-style=gnu -Wl,--fix-cortex-a53- -Wl,--allow-shlib-undefined -Wl,--no-undefined out/target/product/generic_arm64/obj/lib/crtend_android.o
果然有-pie參數。在android編譯根路徑輸入去除-pie參數的指令：
/opt/android-_r9$ prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-/bin/aarch64-linux-android-g++ -nostdlib -Bdynamic -Wl,-dynamic-linker,/system/bin/linker64 -Wl,--gc-sections -Wl,-z,nocopyreloc -Lout/target/product/generic_arm64/obj/lib -Wl,-rpath-link=out/target/product/generic_arm64/obj/lib out/target/product/generic_arm64/obj/lib/crtbegin_dynamic.o out/target/product/generic_arm64/obj/EXECUTABLES/hello_intermediates/hello.o -Wl,--whole-archive -Wl,--no-whole-archive out/target/product/generic_arm64/obj/STATIC_LIBRARIES/libcompiler_rt-extras_intermediates/libcompiler_rt-extras.a prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-/bin/../lib/gcc/aarch64-linux-android/.x-google/../../../../aarch64-linux-android/lib/../lib64/libatomic.a prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-/bin/../lib/gcc/aarch64-linux-android/.x-google/libgcc.a -lutils -lcutils -lc++ -ldl -lc -lm -o out/target/product/generic_arm64/obj/EXECUTABLES/hello_intermediates/LINKED/hello -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--build-id=md5 -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,-maarch64linux -Wl,--hash-style=gnu -Wl,--fix-cortex-a53- -Wl,--allow-shlib-undefined -Wl,--no-undefined out/target/product/generic_arm64/obj/lib/crtend_android.o
檢視編譯結果
模拟器運作試試：
夠狠，不支援。反正隻是調試，不做産品。看看改改連結源程式行不行。
修改bionic/linker/linker.cpp
#if 0
if (elf_hdr->e_type != ET_DYN) {
__libc_format_fd(, "error: only position independent executables (PIE) are supported.\n");
exit(EXIT_FAILURE);
}
#else
if (elf_hdr->e_type != ET_DYN) {
__libc_format_fd(, "warnning: only position independent executables (PIE) are supported. Just ignore temporarily.\n");
}
#endif
編譯重新運作：