disabling it under windows

Author: lemire

benchmarks/CMakeLists.txt

@@ -39,5 +39,7 @@ if(teju_has_float128)
 endif()
 target_link_libraries(benchmark PUBLIC dragonbox::dragonbox_to_chars)
 target_link_libraries(benchmark PUBLIC dragon_schubfach_lib)
-target_link_libraries(benchmark PUBLIC errol)
+if(TARGET errol)
+    target_link_libraries(benchmark PUBLIC errol)
+endif()
 target_include_directories(benchmark PUBLIC ${grisu-exact_SOURCE_DIR})

benchmarks/benchmark.cpp

@@ -20,7 +20,12 @@
 #include "grisu_exact.h"
 #include "dragon4.h"
 #include "schubfach_64.h"
+#if __has_include("errol.h")
 #include "errol.h"
+#define ERROL_SUPPORTED 1
+#else
+#define ERROL_SUPPORTED 0
+#endif
 
 #define IEEE_8087
 #include "benchutil.h"
@@ -67,7 +72,8 @@ void process(std::vector<double> &lines) {
     }
     return volume;
   });
-
+  
+#if ERROL_SUPPORTED
   pretty_print(lines, "errol3", [](const std::vector<double> &lines) {
     double volume = 0;
     char buffer[100];
@@ -77,7 +83,9 @@ void process(std::vector<double> &lines) {
     }
     return volume;
   });
-
+#else
+  std::cout << "# errol not supported" << std::endl;
+#endif // ERROL_SUPPORTED
   pretty_print(lines, "std::to_string", [](const std::vector<double> &lines) {
     double volume = 0;
     for (const auto d : lines) {

dependencies/CMakeLists.txt

@@ -104,7 +104,7 @@ CPMAddPackage(
   OPTIONS "CXXOPTS_BUILD_EXAMPLES NO" "CXXOPTS_BUILD_TESTS NO" "CXXOPTS_ENABLE_INSTALL YES"
 )
 
-
+if(NOT WIN32)
 CPMAddPackage(
   NAME errol
   GITHUB_REPOSITORY marcandrysco/Errol
@@ -115,3 +115,4 @@ CPMAddPackage(
 
 add_library(errol STATIC "${errol_SOURCE_DIR}/lib/errol.c")
 target_include_directories(errol SYSTEM PUBLIC "${errol_SOURCE_DIR}/lib")
+endif()