core/gccversion.c

   1 /******************************************************************************
   2  * Copyright (c) 2000-2016 Ericsson Telecom AB
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *   Balasko, Jeno
  10  *   Beres, Szabolcs
  11  *   Raduly, Csaba
  12  *
  13  ******************************************************************************/
  14 /* Write a header that checks the expected version of the compiler.
  15  * gccversion.c is a bit of a misnomer (also handles the Sun compiler),
  16  * but it's shorter than compiler_version.c */
  17
  18 #include <stdio.h>
  19
  20
  21 #if defined(__GNUC__)
  22
  23 /* clang defines __GNUC__ but also has its own version numbers */
  24 #ifdef __clang__
  25
  26 unsigned int
  27 compiler_major = __clang_major__,
  28 compiler_minor = __clang_minor__,
  29 compiler_patchlevel = __clang_patchlevel__;
  30 #define COMPILER_NAME_STRING "clang"
  31
  32 #else
  33
  34 #define COMPILER_NAME_STRING "GCC"
  35 unsigned int compiler_major = __GNUC__, compiler_minor = __GNUC_MINOR__;
  36 # ifdef __GNUC_PATCHLEVEL__
  37 unsigned int compiler_patchlevel = __GNUC_PATCHLEVEL__;
  38 # else
  39 unsigned int compiler_patchlevel = 0; /* GCC below 3.0 */
  40 # endif
  41
  42 #endif /* __clang__ */
  43
  44 #elif defined(__SUNPRO_C) || defined(__SUNPRO_CC)
  45 /* Just in case it's compiled with the C++ compiler */
  46 # if !defined(__SUNPRO_C)
  47 #  define __SUNPRO_C __SUNPRO_CC
  48 # endif
  49 unsigned int compiler_major      = (__SUNPRO_C & 0xF00) >> 8;
  50 unsigned int compiler_minor      = (__SUNPRO_C & 0x0F0) >> 4;
  51 unsigned int compiler_patchlevel = (__SUNPRO_C & 0x00F);
  52
  53 #else
  54 /* unknown compiler */
  55 unsigned int compiler_major = 0, compiler_minor = 0, compiler_patchlevel = 0;
  56 #endif
  57
  58 int main(void)
  59 {
  60   puts(
  61     "/* Check if the compiler matches the one used to build the runtime */\n"
  62     "#ifndef MAKEDEPEND_RUN\n\n");
  63   /* Do not check compiler version when makedepend is being run.
  64    * Old Solaris makedepend cannot compute GCC_VERSION. */
  65 #if defined(__GNUC__)
  66   printf("\n"
  67 #ifdef __clang__
  68     "#if CLANG_VERSION != %d\n"
  69 #else
  70     "#if GCC_VERSION != %d\n"
  71 #endif
  72     "#error The version of " COMPILER_NAME_STRING " does not match the expected version (" COMPILER_NAME_STRING " %d.%d.%d)\n"
  73     "#endif\n", compiler_major * 10000 + compiler_minor * 100,
  74     /* Note that we don't use compiler_patchlevel when checking.
  75      * This assumes that code is portable between GCC a.b.x and a.b.y */
  76     compiler_major, compiler_minor, compiler_patchlevel);
  77 #elif defined(__SUNPRO_C)
  78   printf("\n"
  79     "#if __SUNPRO_CC != 0x%X\n"
  80     "#error The version of the Sun compiler does not match the expected version.\n"
  81     "#endif\n",
  82     compiler_major * 0x100 + compiler_minor * 0x10 + compiler_patchlevel);
  83 #endif
  84
  85   puts("\n#endif\n");
  86
  87   return 0;
  88 }