- are you sure both executables and libraries are generated?? make sure first of all libhello.so is generated, and is present in /system/lib folder.. Not sure if u use single make file, but both shared library and executable should have their Android.mk files and it should be easy to write one from GNU makefile.
- what tool chain you use?? android has its own version of glibc, and if you build from regular linux build toolchains, libc mismatch will occur, while loading/running the executable. try using android toolchain compiler (CROSS_COMPILE=<mydroid directory>/prebuilt/linux-x86/toolchain/arm-eabi-4.4.0/bin/arm-eabi- ) On Mon, Mar 15, 2010 at 3:12 PM, 원용준 <uhanr...@gmail.com> wrote: > Hello > > When I built a C language Application with bionic and prebuilt using > tollchaing, > some problems happened. > > I am not using "Antroid.mk" style. > I am just using exist "Makefile" Environment values and "Autoconf" for > the application. > > Let us suppose the application which I am trying to build is "hellWorld". > If I build "helloWorld", there would be libHello.so and HelloWorld > binalry files. > Then I will use those files. > > I refered to the web site but it failed. > (http://honeypod.blogspot.com/2007/12/shared-library-hello-world-for-android.html) > > I think that build is success. > But when I executed the application, follwing error messages showed. > > [ERROR MESSAGE] > ========================================================================== > # ./helloWorld > link_image[1838]: 976 could not load needed library 'libHello.so' > for './helloWorld' (reloc_library[1245]: 976 cannot locate > 'strcpy'...)CANNOT LINK EXECUTABLE > > # strace ./helloWorld > > execve("./helloWorld", ["./helloWorld"], [/* 12 vars */]) = 0 > syscall_983045(0xb001792c, 0xbeec4d44, 0, 0x84a8, 0xb000f448, > 0xbeec4d40, 0x8, 0xf0005, 0, 0, 0, 0, 0, 0xbeec4ce8, 0xb000194b, > 0xb000229c, 0x80000010, 0xb001792c, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, > 0, 0, 0) = 0 > getpid() = 978 > sigaction(SIGILL, {0xb0001d4d, [], SA_RESTART}, {SIG_DFL}, 0) = 0 > sigaction(SIGABRT, {0xb0001d4d, [], SA_RESTART}, {SIG_DFL}, 0) = 0 > sigaction(SIGBUS, {0xb0001d4d, [], SA_RESTART}, {SIG_DFL}, 0) = 0 > sigaction(SIGFPE, {0xb0001d4d, [], SA_RESTART}, {SIG_DFL}, 0) = 0 > sigaction(SIGSEGV, {0xb0001d4d, [], SA_RESTART}, {SIG_DFL}, 0) = 0 > sigaction(SIGSTKFLT, {0xb0001d4d, [], SA_RESTART}, {SIG_DFL}, 0) = 0 > sigaction(SIGPIPE, {0xb0001d4d, [], SA_RESTART}, {SIG_DFL}, 0) = 0 > stat64("/system/lib/libcrypto.so", {st_mode=S_IFREG|0644, > st_size=617972, ...}) = 0 > > ....... 중략 ........ > stat64("/system/lib/libHello.so", {st_mode=S_IFREG|0755, > st_size=602586, ...}) = 0 > open("/system/lib/libHello.so", O_RDONLY|O_LARGEFILE) = 3 > lseek(3, 0, SEEK_SET) = 0 > read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0▒W\0\000"..., > 4096) = 4096 > lseek(3, -8, SEEK_END) = 602578 > read(3, "ockname\0", 8) = 8 > mmap2(0x80100000, 135168, PROT_READ|PROT_EXEC, > MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x80100000 > mmap2(0x80100000, 114324, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, > 3, 0) = 0x80100000 > mprotect(0x80100000, 114688, PROT_READ|PROT_WRITE|PROT_EXEC) = 0 > mmap2(0x8011c000, 5636, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, > 3, 0x1b) = 0x8011c000 > mmap2(0x8011e000, 11524, PROT_READ|PROT_WRITE, > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x8011e000 > close(3) = 0 > munmap(0x80100000, 135168) = 0 > write(2, "link_image[1838]: 978 could no"..., 147 link_image[1838]: > 978 could not load needed library 'libHello.so' for './helloWorld' > (reloc_library[1245]: 978 cannot locate 'strcpy'...)) = 147 > write(2, "CANNOT LINK EXECUTABLE\n\0", 24CANNOT LINK EXECUTABLE > ) = 24 > SYS_248(0xffffffff, 0x38, 0x1000, 0x1, 0xffffffff <unfinished ... exit > status 255> > # > ========================================================================== > > > I guess it is a linker error. Do I make a mistake with compile flag? > Compile flags what I used are here. > It include basic Android CFLAGS and BUILD_SHARED_LIBRARRY to make > shared library and BUILD_EXECUTABLE to make binary. > > [FLAGS] > ========================================================================== > ###################################################################################### > # LOCAL_CFLAGS > ###################################################################################### > LOCAL_CFLAGS:= $(subst system,$(ANDROID_HOME)/system,$(TARGET_GLOBAL_CFLAGS)) > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/bionic/libc/include > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/bionic/libc/kernel/common > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/bionic/libc/kernel/arch-$(TARGET_ARCH) > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/bionic/libc/arch-$(TARGET_ARCH)/include > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/bionic/libm/include > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/bionic/libm/include/$(TARGET_ARCH) > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/kernel/include > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/bionic/libstdc++/include > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/external/libvos/svn/include > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/external/sqlite/dist > LOCAL_CFLAGS+= -I$(ANDROID_HOME)/external/openssl/include > LOCAL_CFLAGS+= -nostdlib > LOCAL_CFLAGS+= -Wl,-rpath-link=$(OUT)/system/lib/ > > ###################################################################################### > # LOCAL_LDFLAGS > ###################################################################################### > LOCAL_LDFLAGS:= $(subst > system,$(ANDROID_HOME)/system,$(TARGET_GLOBAL_LDFLAGS)) > LOCAL_LDFLAGS+= > $(ANDROID_HOME)/prebuilt/linux-x86/toolchain/arm-eabi-4.4.0/lib/gcc/arm-eabi/4.4.0/libgcc.a > LOCAL_LDFLAGS+= -L$(OUT)/system/lib > LOCAL_LDFLAGS+= -lc -lm -lstdc++ -lsqlite -lcrypto > > ###################################################################################### > # BUILD_SHARED_LIBRARRY > ###################################################################################### > SHARED_LDFLAGS:= -Wl,-T,$(ANDROID_HOME)/build/core/armelf.xsc > SHARED_LDFLAGS+= -Wl,-shared,-Bsymbolic > > ###################################################################################### > # BUILD_EXECUTABLE > ###################################################################################### > EXECUTE_CFLAGS:= -Bdynamic > EXECUTE_CFLAGS+= -Wl,-T,${ANDROID_HOME}/build/core/armelf.x > EXECUTE_CFLAGS+= -Wl,-dynamic-linker,/system/bin/linker > EXECUTE_CFLAGS+= -Wl,--gc-sections -Wl,-z,nocopyreloc > EXECUTE_LDFLAGS:= $(OUT)/obj/lib/crtbegin_dynamic.o > EXECUTE_LDFLAGS+= $(OUT)/obj/lib/crtend_android.o > EXECUTE_LDFLAGS:= -lHello > ========================================================================== > > Thank you. > > -- > unsubscribe: android-porting+unsubscr...@googlegroups.com > website: http://groups.google.com/group/android-porting > -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting
