From 9944de10f9f9bf0ef5d954b8d5beb2a672eb6434 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Tue, 2 Aug 2022 15:10:21 +0200
Subject: [PATCH] ci: `fmt` dependency checked only when `UNITS_USE_LIBFMT` is
 set

---
 src/mp-unitsConfig.cmake | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/mp-unitsConfig.cmake b/src/mp-unitsConfig.cmake
index 8b63a787..668fd97d 100644
--- a/src/mp-unitsConfig.cmake
+++ b/src/mp-unitsConfig.cmake
@@ -30,6 +30,7 @@ function(__check_libcxx_in_use variable)
         set(${variable} ${${variable}} PARENT_SCOPE)
 
         list(POP_BACK CMAKE_MESSAGE_INDENT)
+
         if(${variable})
             message(CHECK_PASS "found")
         else()
@@ -39,15 +40,21 @@ function(__check_libcxx_in_use variable)
 endfunction()
 
 include(CMakeFindDependencyMacro)
-find_dependency(fmt)
+
+if(UNITS_USE_LIBFMT)
+    find_dependency(fmt)
+endif()
+
 find_dependency(gsl-lite)
 
 # add range-v3 dependency only for clang + libc++
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     __check_libcxx_in_use(__units_libcxx)
+
     if(__units_libcxx AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "14")
         find_dependency(range-v3)
     endif()
+
     unset(__units_libcxx)
 endif()