Centos 7 constructs the GCC 4.8.2 32-bit compiling environment

Construct a GCC 32-bit compiling environment using centos 7


1 Introduction

1.1 Background
Learn New C ++ 2011 and C11 standards.

1.2 use software
Centos 7 (Linux version 3.10.0-123. el7.x86 _ 64)
GCC version 4.8.2 20140120 (Red Hat 4.8.2-16)

1.3 this configuration
32-bit GCC development environment.
Because RHEL 7 (Red Hat Enterprise Linux 7) no longer provides the 32-bit version, centos 7 does not provide the 32-bit version in the short term, so to consider upgrading and researching available operating systems, configure the open environment.
64-bit centos 7 currently only provides GCC 4.8.2 64-bit version. glibc (version 2.17) 32-bit version is not installed by default.

1.4 Purpose
Build a 64-bit centos version of GCC 4.8.2 that supports compiling and running 32-bit programs and a new standard compiling environment.

2 Installation Steps
2.1 install glibc (32-bit)
Install glibc 32-bit.
Yum -- disablerepo = * -- enablerepo = c6-media install glibc-2.17-55.el7.i686

2.2 install GCC 4.8.2
Install the complete GCC 4.8.2.
2.3 copy the Runtime Library libgcc_s.so
Assuming GCC 4.8.2 is installed to/usr/local/gcc-4.8.2. Copy the 32-bit version libgcc_s.so to the 32-bit library.
/Lib.
CP/usr/local/gcc-4.8.2/lib/libgcc */lib

2.4 verify installation (C11)
[[Email protected] SRC] # Cat AA. c

# Include <stdio. h>
# Include <pthread. h>

// Gcc-M32-g-STD = C11 AA. C-o AA-lpthread;./AA

Void * F (void * Data)
{
// Char buff [10];
// Char * p = 0;
// Memcpy (buff, "ddddddddddddddd", 20 );
// Memcpy (P, "Sss", 10 );
// P [0] = 'D ';
Printf ("centos 7, GCC 4.8.2 C11 test OK. \ n ");
Return 0;
}

Int main (INT argc, char * argv [])
{
Pthread_t T;
Pthread_create (& T, 0, F, 0 );
Pthread_join (T, 0 );
Return 0;
}

Gcc-M32-g-STD = C11 AA. C-o AA-lpthread;./AA; LDD AA
Centos 7, GCC 4.8.2 C11 test OK.
Linux-gate.so.1 => (0xf77bb000)
Libpthread. so.0 =>/lib/libpthread. so.0 (0xf7799000)
Libc. so.6 =>/lib/libc. so.6 (0xf75db000)
/Lib/ld-linux.so.2 (0xf77bc000)
2.5 verify installation (C ++ 2011)
[[Email protected] SRC] # Cat AA. cpp

# Include <stdio. h>
# Include <thread>
# Include <functional>
# Include <algorithm>
Using namespace STD: placeholders;
Using namespace STD;

// G ++-STD = C ++ 11-g AA. cpp-o aa-lpthread;./AA

Void * F (void * Data)
{
Printf ("centos 7, GCC 4.8.2 C ++ 2011 test OK. \ n ");
Return 0;
}

Int main (INT argc, char * argv [])
{
Void * P;
// STD: function <void * (void *)> pF = STD: BIND (F, nullptr );
Auto pF = STD: BIND (F, nullptr );
STD: thread t (PF );
// T. Start ();
T. Join ();
Return 0;
}

[[Email protected] SRC] # G ++-STD = C ++ 11-g AA. cpp-o aa-lpthread;./AA; LDD AA
Centos 7, GCC 4.8.2 C ++ 2011 TEST OK.
Linux-vdso.so.1 => (0x00007fffe7d6c000)
Libpthread. so.0 =>/lib64/libpthread. so.0 (0x00007fd40dd34000)
Libstdc ++. so.6 =>/lib64/libstdc ++. so.6 (0x00007fd40da2d000)
Libm. so.6 =>/lib64/libm. so.6 (0x00007fd40d72a000)
Libgcc_s.so.1 =>/lib64/libgcc_s.so.1 (0x00007fd40d514000)
Libc. so.6 =>/lib64/libc. so.6 (0x00007fd40d153000)

/Lib64/ld-linux-x86-64.so.2 (0x00007fd40df58000)