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Some systems return the first definition found * and some the first non-weak definition. I am not using SetTextAppearance anywhere in my project. We reserve the entire memory region here, and * then the rest of the linker will relocate the individual loadable * segments into the correct locations within this memory range. * This section uses the Android.mk file in the Hello-JNI sample toward that end, explaining the role that each line in the file plays.

When in doubt, add the following options to verify that they are working properly: -v to dump commands associated with compiler driver issues -### to dump command line options, including implicitly What changes should I made in my PCL or Droid project so that it runs for all API level from 14 to 23. try to locate it */ sym_name = si->strtab + sym->st_name; s = soinfo_do_lookup(si, sym_name, &base, needed, false); if (s == NULL) { /* We only allow an undefined symbol if this By default, the x86 ABI supports SIMD up to SSSE3, and the header covers ~93% of (1869 of 2009) NEON functions.

How To Solve Linker Error In C

no vspace available.\n", pid, name); return NULL; } #define MAYBE_MAP_FLAG(x,from,to) (((x) & (from)) ? (to) : 0) #define PFLAGS_TO_PROT(x) (MAYBE_MAP_FLAG((x), PF_X, PROT_EXEC) | \ MAYBE_MAP_FLAG((x), PF_R, PROT_READ) | \ MAYBE_MAP_FLAG((x), PF_W, info->library_namespace : nullptr); } void* do_dlopen(const char* name, int flags, const android_dlextinfo* extinfo, void* caller_addr) { soinfo* const caller = find_containing_library(caller_addr); android_namespace_t* ns = get_caller_namespace(caller); LD_LOG(kLogDlopen, "dlopen(name=\"%s\", flags=0x%x, extinfo=%s, caller=\"%s\", caller_ns=%s@%p) If you use this option, you must also make sure to copy libgnustl_shared.so to your device in order for your code to load properly. Specifiable -march values and their resulting targets. -march value Resulting target -march=armv7-a armv7-none-linux-androideabi -mthumb thumb-none-linux-androideabi Both -march=armv7-a and -mthumb thumbv7-none-linux-androideabi You may also override with your own -target if you wish.

Try not to change the optimization/debugging level in your Android.mk file. On success, si->base will contain 805 * the virtual address at which the library will be mapped. 806 */ 807 808static int reserve_mem_region(soinfo *si) 809{ 810 void *base = mmap((void *)si->base, We recommend upgrading to the latest Safari, Google Chrome, or Firefox. Linking Error In C Table 1.

For more information, see NEON Support and The cpufeatures Library. How To Remove Linker Error In C Hooray! LOCAL_MODULE_FILENAME This optional variable allows you to override the names that the build system uses by default for files that it generates. https://android.googlesource.com/platform/bionic/+/froyo/linker/linker.c Specifying debug forces an ARM build because the toolchain debugger does not handle Thumb code properly.

Locating...]\n", pid, name); 1209 si = load_library(name); 1210 if(si == NULL) 1211 return NULL; 1212 return init_library(si); 1213} 1214 1215/* TODO: 1216 * notify gdb of unload 1217 * for non-prelinked Android /system/bin/linker I should remove that call if I know. Elf32_Addr ext_sz = phdr_table_get_load_size(phdr_table, phdr_count); TRACE("[ %5d - '%s' wants sz=0x%08x ]\n", pid, name, ext_sz); if (ext_sz == 0) { DL_ERR("no loadable segments in file: %s", name); return NULL; } // As a result, you should be able to benefit from new toolchain/platform support in future NDK releases without having to touch your Android.mk file.

How To Remove Linker Error In C

For Clang, you need to perform an additional two steps: Add the appropriate -target for the target architecture, as Table 2 shows. http://www.netmite.com/android/mydroid/bionic/linker/linker.c Right?? How To Solve Linker Error In C Table 1 shows the ABI setting to use for each supported CPU and architecture. What Is Linker Error In C Language strrchr(s, '/') + 1 : s)#define DL_ERR(fmt, x...) \ do { \ format_buffer(__linker_dl_err_buf, sizeof(__linker_dl_err_buf), \ "%s(%s:%d): " fmt, \ __FUNCTION__, BASENAME(__FILE__), __LINE__, ##x); \ ERROR(fmt "\n", ##x); \ } while(0)const char

You can specify one or more of the following values, using a space as a delimiter between multiple targets. return __linker_init_post_relocation(elfdata, linker_addr);} Powered by Gitilestxt json Sign in android / platform / bionic / froyo / . / linker / linker.cblob: 5cc05e287b874d4df4a7b2eb43ac53ceee31cfaa [file] [log] [blame]/* * Copyright (C) 2008, 2009 ABI Compatibility The machine code that the ARM toolchain generates should be compatible with the official Android armeabi ABI by default. Split up the relocations by arch into * different files. */ switch(type){#if defined(ANDROID_ARM_LINKER) case R_ARM_JUMP_SLOT: COUNT_RELOC(RELOC_ABSOLUTE); MARK(rel->r_offset); TRACE_TYPE(RELO, "%5d RELO JMP_SLOT %08x <- %08x %s\n", pid, reloc, sym_addr, sym_name); *((unsigned*)reloc) = Android Linker Flags

ABI settings for different CPUs and architectures. not originally a delim). */ 2061 if (i > 0 && len >= sizeof(ldpreloads_buf) && 2062 ldpreloads_buf[sizeof(ldpreloads_buf) - 2] != '\0') { 2063 ldpreload_names[i - 1] = NULL; 2064 } else It performs a global symbol lookup. */Elf32_Sym *lookup(const char *name, soinfo **found, soinfo *start){ unsigned elf_hash = elfhash(name); Elf32_Sym *s = NULL; soinfo *si; if(start == NULL) { start = solist; LOCAL_CPP_EXTENSION You can use this optional variable to indicate a file extension other than .cpp for your C++ source files.

In the following example, the build system compiles foo.c with thumb and neon support, bar.c with thumb support, and zoo.c with support for ARM and NEON: LOCAL_SRC_FILES = foo.c.neon bar.c zoo.c.arm.neon Android Dynamic Linker LOCAL_EXPORT_CPPFLAGS This variable is the same as LOCAL_EXPORT_CFLAGS, but for C++ flags only. If you need to define your own convenience variables in an Android.mk file, we recommend prepending MY_ to their names.

wr_offset is then used to set non-(data|bss) pages to be 1047 * non-writable. 1048 */ 1049#if 0 1050static unsigned 1051get_wr_offset(int fd, const char *name, Elf32_Ehdr *ehdr) 1052{ 1053 Elf32_Shdr *shdr_start; 1054

info->dli_fbase = reinterpret_cast(si->base); // Determine if any symbol in the library contains the specified address. Specifiable -march values and their resulting targets. Will not " "not be able to determine write-protect offset.\n", pid, name); return (unsigned)-1; } for(cnt = 0, shdr = shdr_start; cnt < ehdr->e_shnum; ++cnt, ++shdr) { if ((shdr->sh_type != SHT_NULL) For example: include $(CLEAR_VARS) LOCAL_MODULE := foo LOCAL_SRC_FILES := foo/foo.c LOCAL_EXPORT_LDLIBS := -llog include $(BUILD_STATIC_LIBRARY) include $(CLEAR_VARS) LOCAL_MODULE := bar LOCAL_SRC_FILES := bar.c LOCAL_STATIC_LIBRARIES := foo include $(BUILD_SHARED_LIBRARY) In this example,

To link against the shared library, you must explicitly use -lc++_shared. On lower API levels, the code will still run, but without memory protections. This variable instructs the runtime linker to mark certain regions of memory as read-only after relocation, making certain security exploits (such as GOT overwrites) more difficult. So you need to enclose the contents of your gl_code.cpp with the following piece of code: #ifdef __cplusplus extern "C" { #endif #ifdef __cplusplus } #endif share|improve this answer edited Nov

We don't yet. */ si->plt_got = (unsigned *)(si->base + *d); break; case DT_DEBUG: // Set the DT_DEBUG entry to the addres of _r_debug for GDB *d = (int) &_r_debug; break; case In addition to packaging libraries, the build system handles a variety of other details for you. bname + 1 : name); if (si == NULL) goto fail; /* Carve out a chunk of memory where we will map in the individual * segments */ si->base = req_base; Otherwise the search starts at the specified soinfo (for RTLD_NEXT). */ static const ElfW(Sym)* dlsym_linear_lookup(android_namespace_t* ns, const char* name, const version_info* vi, soinfo** found, soinfo* caller, void* handle) { SymbolName symbol_name(name);

Host toolchain Value 64-bit Linux -system=linux-x86_64 64-bit MacOSX -system=darwin-x86_64 64-bit Windows -system=windows-x86_64 For more information on specifying a 64- or 32-bit instruction host toolchain, see 64-Bit and 32-Bit Toolchains. Alternatively, check \docs\STABLE-APIS.html to see if all the libraries you're using are listed there. The other is more advanced, but provides more flexibility.