core/gccversion.c

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Copyright (c) 2000-2015 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 /* Write a header that checks the expected version of the compiler.
   9  * gccversion.c is a bit of a misnomer (also handles the Sun compiler),
  10  * but it's shorter than compiler_version.c */
  11
  12 #include <stdio.h>
  13
  14
  15 #if defined(__GNUC__)
  16
  17 /* clang defines __GNUC__ but also has its own version numbers */
  18 #ifdef __clang__
  19
  20 unsigned int
  21 compiler_major = __clang_major__,
  22 compiler_minor = __clang_minor__,
  23 compiler_patchlevel = __clang_patchlevel__;
  24 #define COMPILER_NAME_STRING "clang"
  25
  26 #else
  27
  28 #define COMPILER_NAME_STRING "GCC"
  29 unsigned int compiler_major = __GNUC__, compiler_minor = __GNUC_MINOR__;
  30 # ifdef __GNUC_PATCHLEVEL__
  31 unsigned int compiler_patchlevel = __GNUC_PATCHLEVEL__;
  32 # else
  33 unsigned int compiler_patchlevel = 0; /* GCC below 3.0 */
  34 # endif
  35
  36 #endif /* __clang__ */
  37
  38 #elif defined(__SUNPRO_C) || defined(__SUNPRO_CC)
  39 /* Just in case it's compiled with the C++ compiler */
  40 # if !defined(__SUNPRO_C)
  41 #  define __SUNPRO_C __SUNPRO_CC
  42 # endif
  43 unsigned int compiler_major      = (__SUNPRO_C & 0xF00) >> 8;
  44 unsigned int compiler_minor      = (__SUNPRO_C & 0x0F0) >> 4;
  45 unsigned int compiler_patchlevel = (__SUNPRO_C & 0x00F);
  46
  47 #else
  48 /* unknown compiler */
  49 unsigned int compiler_major = 0, compiler_minor = 0, compiler_patchlevel = 0;
  50 #endif
  51
  52 int main(void)
  53 {
  54   puts(
  55     "/* Check if the compiler matches the one used to build the runtime */\n"
  56     "#ifndef MAKEDEPEND_RUN\n\n");
  57   /* Do not check compiler version when makedepend is being run.
  58    * Old Solaris makedepend cannot compute GCC_VERSION. */
  59 #if defined(__GNUC__)
  60   printf("\n"
  61 #ifdef __clang__
  62     "#if CLANG_VERSION != %d\n"
  63 #else
  64     "#if GCC_VERSION != %d\n"
  65 #endif
  66     "#error The version of " COMPILER_NAME_STRING " does not match the expected version (" COMPILER_NAME_STRING " %d.%d.%d)\n"
  67     "#endif\n", compiler_major * 10000 + compiler_minor * 100,
  68     /* Note that we don't use compiler_patchlevel when checking.
  69      * This assumes that code is portable between GCC a.b.x and a.b.y */
  70     compiler_major, compiler_minor, compiler_patchlevel);
  71 #elif defined(__SUNPRO_C)
  72   printf("\n"
  73     "#if __SUNPRO_CC != 0x%X\n"
  74     "#error The version of the Sun compiler does not match the expected version.\n"
  75     "#endif\n",
  76     compiler_major * 0x100 + compiler_minor * 0x10 + compiler_patchlevel);
  77 #endif
  78
  79   puts("\n#endif\n");
  80
  81   return 0;
  82 }