ENH: Added explicit declarations of some C functions that are hard to get from standard headers in como (www.comeaucomputing.com) strict mode.

Source/cmGlobalUnixMakefileGenerator.cxx

@@ -40,19 +40,11 @@ void cmGlobalUnixMakefileGenerator::EnableLanguage(const char* lang,
       static char envCC[5000];
       if(mf->GetDefinition("CMAKE_C_COMPILER"))
         {
-#if !defined(_WIN32) && defined(__COMO__)
-        std::string env = "${CMAKE_C_COMPILER}";
-        mf->ExpandVariablesInString(env);
-        strncpy(envCC, env.c_str(), 4999);
-        envCC[4999] = 0;
-        setenv("CC", envCC, 1);        
-#else
         std::string env = "CC=${CMAKE_C_COMPILER}";
         mf->ExpandVariablesInString(env);
         strncpy(envCC, env.c_str(), 4999);
         envCC[4999] = 0;
         putenv(envCC);
-#endif
         }
       if (m_CMakeInstance->GetIsInTryCompile())
         {
@@ -80,7 +72,7 @@ void cmGlobalUnixMakefileGenerator::EnableLanguage(const char* lang,
         if (!versionValue || atof(versionValue) <= 1.4)
           {
           std::string fpath = root + "/Modules/CMakeBackwardCompatibilityC.cmake";
-          mf->ReadListFile(NULL,fpath.c_str());
+          mf->ReadListFile(0,fpath.c_str());
           }
         }
       }
@@ -91,19 +83,11 @@ void cmGlobalUnixMakefileGenerator::EnableLanguage(const char* lang,
       static char envCXX[5000];
       if(mf->GetDefinition("CMAKE_CXX_COMPILER"))
         {
-#if !defined(_WIN32) && defined(__COMO__)
-        std::string env = "${CMAKE_CXX_COMPILER}";
-        mf->ExpandVariablesInString(env);
-        strncpy(envCXX, env.c_str(), 4999);
-        envCXX[4999] = 0;
-        setenv("CXX", envCXX, 1);        
-#else
         std::string env = "CXX=${CMAKE_CXX_COMPILER}";
         mf->ExpandVariablesInString(env);
         strncpy(envCXX, env.c_str(), 4999);
         envCXX[4999] = 0;
         putenv(envCXX);
-#endif
         }
       std::string cmd = root;
       if (m_CMakeInstance->GetIsInTryCompile())
@@ -131,7 +115,7 @@ void cmGlobalUnixMakefileGenerator::EnableLanguage(const char* lang,
         if (!versionValue || atof(versionValue) <= 1.4)
           {
           fpath = root + "/Modules/CMakeBackwardCompatibilityCXX.cmake";
-          mf->ReadListFile(NULL,fpath.c_str());
+          mf->ReadListFile(0,fpath.c_str());
           }
         }
       }

Source/cmStandardIncludes.h

@@ -27,10 +27,6 @@
 #include "cmConfigure.h"
 #endif
 
-#if !defined(_WIN32) && defined(__COMO__)
-# define _BSD_SOURCE
-#endif
-
 #ifdef _MSC_VER
 #pragma warning ( disable : 4786 )
 #pragma warning ( disable : 4503 )
@@ -70,6 +66,19 @@
 // include the "c" string header
 #include <string.h>
 
+#if !defined(_WIN32) && defined(__COMO__)
+// Hack for como strict mode to avoid defining _SVID_SOURCE or _BSD_SOURCE.
+extern "C"
+{
+extern FILE *popen (__const char *__command, __const char *__modes) __THROW;
+extern int pclose (FILE *__stream) __THROW;
+extern char *realpath (__const char *__restrict __name,
+                       char *__restrict __resolved) __THROW;
+extern char *strdup (__const char *__s) __THROW;
+extern int putenv (char *__string) __THROW;
+}
+#endif
+
 // if std:: is not supported, then just #define it away
 #ifdef CMAKE_NO_STD_NAMESPACE
 #define std