64-bit Ubuntu compiled 32-bit program

64-bit Ubuntu compiled 32-bit programs such as the use of C4 this gadget encountered to need to simulate the needs of 32-bit systems, found that using the-m32 parameter, the compilation prompt error, as follows:

/USR/BIN/LD: Unknown emulation mode: 32 supported emulation: elf_x86_64 elf32_x86_64 elf_i386 i386linux elf_l1om elf_k1om i386pep i386pe Collect2:erro R:ld returned 1 exit status first to open 64-bit system support for 32-bit

Step one: Confirm that 64 is the kernel of the architecture

Dpkg--print-architecture

Output: adm64 description already has a 64-bit architecture core.

Step two: Confirm that the multi-schema support feature is turned on

Dpkg--print-foreign-architectures

Output: I386 description is turned on, if no need to open manually

Open Multi-schema support

sudo dpkg--add-architecture i386 sudo apt-get update sudo apt-get dist-upgrade so you have 64-bit system support for 32-bit

followed by the installation of GCC Multilab

Apt-get Install Gcc-multilib G++-multilib

64-bit Ubuntu compiled 32-bit program