Dependency on gsl-lite removed as it causes issues with compiler-explorer

conanfile.py

@@ -45,8 +45,7 @@ class UnitsConan(ConanFile):
     exports = ["LICENSE.md"]
     settings = "os", "compiler", "build_type", "arch"
     requires = (
-        "cmcstl2/2019.09.09@mpusz/stable",
+        "cmcstl2/2019.09.09@mpusz/stable"
-        "gsl-lite/0.33.0@nonstd-lite/stable"
     )
     scm = {
         "type": "git",

src/CMakeLists.txt

@@ -54,7 +54,6 @@ target_compile_features(units INTERFACE cxx_std_20)
 target_link_libraries(units
     INTERFACE
         CONAN_PKG::cmcstl2
-        CONAN_PKG::gsl-lite
 )
 target_include_directories(units
     INTERFACE

src/include/units/bits/hacks.h

@@ -23,6 +23,10 @@
 #pragma once
 
 #include <experimental/ranges/concepts>
+#include <exception>
+
+
+#define Expects(cond) if(!(cond)) ::std::terminate();
 
 namespace std {
 

src/include/units/quantity.h

@@ -25,7 +25,6 @@
 #include <units/unit.h>
 #include <units/bits/concepts.h>
 #include <limits>
-#include <gsl/gsl-lite.hpp>
 
 namespace std::experimental::units {
 

src/include/units/ratio.h

@@ -22,10 +22,10 @@
 
 #pragma once
 
+#include <units/bits/hacks.h>
 #include <type_traits>
 #include <numeric>
 #include <cstdint>
-#include <gsl/gsl-lite.hpp>
 
 namespace std::experimental::units {
 

test/metabench/CMakeLists.txt

@@ -27,7 +27,6 @@ function(add_metabench_test target name erb_path range)
     target_link_libraries(${target}
         PUBLIC
             CONAN_PKG::cmcstl2
-            CONAN_PKG::gsl-lite
     )
 endfunction()
 

test/metabench/ratio/ratio_type_constexpr.h

@@ -22,10 +22,12 @@
 
 #pragma once
 
+#include <exception>
 #include <type_traits>
 #include <numeric>
 #include <cstdint>
-#include <gsl/gsl-lite.hpp>
+
+#define Expects(cond) if(!(cond)) ::std::terminate();
 
 namespace std::experimental::units {