cmocka: Add VS2015 support

Visual Studio now includes support for vsnprintf and snprintf but does
so as an inline functions. check_symbol_exists is used to check for
its existence within stdio. [3] All tests are passing when run from
within the IDE or via NMake. Command line builds via msbuild seem to
error for the first few example tests.

Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 70a8ad1..4507444 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,6 +34,7 @@ include(DefineCompilerFlags)
 include(DefineInstallationPaths)
 include(DefineOptions.cmake)
 include(CPackConfig.cmake)
+include(CheckSymbolExists)
 
 # disallow in-source build
 include(MacroEnsureOutOfSourceBuild)

diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index c82f099..c2064dd 100644 (file)
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -84,9 +84,7 @@ check_function_exists(printf HAVE_PRINTF)
 check_function_exists(setjmp HAVE_SETJMP)
 check_function_exists(signal HAVE_SIGNAL)
 check_function_exists(strsignal HAVE_STRSIGNAL)
-check_function_exists(sprintf HAVE_SNPRINTF)
 check_function_exists(strcmp HAVE_STRCMP)
-check_function_exists(vsnprintf HAVE_VSNPRINTF)
 check_function_exists(clock_gettime HAVE_CLOCK_GETTIME)
 
 if (WIN32)
@@ -94,6 +92,11 @@ if (WIN32)
     check_function_exists(_vsnprintf HAVE__VSNPRINTF)
     check_function_exists(_snprintf HAVE__SNPRINTF)
     check_function_exists(_snprintf_s HAVE__SNPRINTF_S)
+    check_symbol_exists(snprintf stdio.h HAVE_SNPRINTF)
+    check_symbol_exists(vsnprintf stdio.h HAVE_VSNPRINTF)
+else (WIN32)
+    check_function_exists(sprintf HAVE_SNPRINTF)
+    check_function_exists(vsnprintf HAVE_VSNPRINTF)
 endif (WIN32)
 
 find_library(RT_LIBRARY rt)