不求甚解3：ld

# ld --help
Usage: ld [options] file...
Options:
  -a KEYWORD                  Shared library control for HP/UX compatibility
  -A ARCH, --architecture ARCH
                              Set architecture
  -b TARGET, --format TARGET  Specify target for following input files
  -c FILE, --mri-script FILE  Read MRI format linker script
  -d, -dc, -dp                Force common symbols to be defined
  -e ADDRESS, --entry ADDRESS Set start address
  -E, --export-dynamic        Export all dynamic symbols
  --no-export-dynamic         Undo the effect of --export-dynamic
  -EB                         Link big-endian objects
  -EL                         Link little-endian objects
  -f SHLIB, --auxiliary SHLIB Auxiliary filter for shared object symbol table
  -F SHLIB, --filter SHLIB    Filter for shared object symbol table
  -g                          Ignored
  -G SIZE, --gpsize SIZE      Small data size (if no size, same as --shared)
  -h FILENAME, -soname FILENAME
                              Set internal name of shared library
  -I PROGRAM, --dynamic-linker PROGRAM
                              Set PROGRAM as the dynamic linker to use
  --no-dynamic-linker         Produce an executable with no program interpreter header
  -l LIBNAME, --library LIBNAME
                              Search for library LIBNAME
  -L DIRECTORY, --library-path DIRECTORY
                              Add DIRECTORY to library search path
  --sysroot=       Override the default sysroot location
  -m EMULATION                Set emulation
  -M, --print-map             Print map file on standard output
  -n, --nmagic                Do not page align data
  -N, --omagic                Do not page align data, do not make text readonly
  --no-omagic                 Page align data, make text readonly
  -o FILE, --output FILE      Set output file name
  -O                          Optimize output file
  -plugin PLUGIN              Load named plugin
  -plugin-opt ARG             Send arg to last-loaded plugin
  -flto                       Ignored for GCC LTO option compatibility
  -flto-partition=            Ignored for GCC LTO option compatibility
  -fuse-ld=                   Ignored for GCC linker option compatibility
  --map-whole-files           Ignored for gold option compatibility
  --no-map-whole-files        Ignored for gold option compatibility
  -Qy                         Ignored for SVR4 compatibility
  -q, --emit-relocs           Generate relocations in final output
  -r, -i, --relocatable       Generate relocatable output
  -R FILE, --just-symbols FILE
                              Just link symbols (if directory, same as --rpath)
  -s, --strip-all             Strip all symbols
  -S, --strip-debug           Strip debugging symbols
  --strip-discarded           Strip symbols in discarded sections
  --no-strip-discarded        Do not strip symbols in discarded sections
  -t, --trace                 Trace file opens
  -T FILE, --script FILE      Read linker script
  --default-script FILE, -dT  Read default linker script
  -u SYMBOL, --undefined SYMBOL
                              Start with undefined reference to SYMBOL
  --require-defined SYMBOL    Require SYMBOL be defined in the final out