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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi again, Dear Sir or Madam, Is the setting set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=3Dgnu++14") used in my CMakeLi= sts.txt having impact on the binary codes? If so, what kind of setting for -std=3D???? I look forward to hearing from you. Thanks and regards, Dingjun ________________________________ From: Dingjun Chen Sent: Friday, October 6, 2023 10:43 AM To: gcc-help@gcc.gnu.org Subject: What caused my executable file not to run on a Linux of old versio= n 2.4.36.1 Hi, Dear Sir or Madam, I used the following gcc/g++ to build 32-bit executable file: vtem_xyz and = please see the following information below: dingjun@G02515:~/DAQ_XYZCross2_cmake/bin$ objdump -f vtem_xyz vtem_xyz: file format elf32-i386 architecture: i386, flags 0x00000150: HAS_SYMS, DYNAMIC, D_PAGED start address 0x000027d0 The Linux version and gcc/g++ version information are given below when buil= ding above executable file: dingjun@G02515:~/DAQ_XYZCross2_cmake/bin$ uname -a Linux G02515 5.15.90.1-microsoft-standard-WSL2 #1 SMP Fri Jan 27 02:56:13 U= TC 2023 x86_64 x86_64 x86_64 GNU/Linux dingjun@G02515:~/DAQ_XYZCross2_cmake/bin$ g++ --version g++ (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0 Copyright (C) 2021 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. dingjun@G02515:~/DAQ_XYZCross2_cmake/bin$ gcc --version gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0 Copyright (C) 2021 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. However, the executable file: vtem_xyz cannot run on RTD single board compu= ter with Linux 2.4.36.1 2009, i686. All shared .so libraries are under the same directory with the executable f= ile: vtem_xyz. I am wondering what's wrong with it. Could you please tell me if your GNU libraries are compatible with the Linu= x of old version? Do you have any suggestions when building an executable = file running under a Linux of old version? I look forward to your help and your reply would be greatly appreciated. Thanks and regards, Dingjun --_000_YT2P288MB0073E02CECBFE4D3F8DE031997C9AYT2P288MB0073CANP_--