CXX-3300 update build-from-source minimum supported compiler versions (#1415)

* Add missing import of ec2_assume_role
* Temporarily disable RHEL 7.9 tasks

Author: eramongodb

.evergreen/config_generator/components/compile_only.py

@@ -110,6 +110,7 @@ def tasks():
                 run_on=distro.name,
                 patchable=patchable,
                 commands=commands,
+                disable=(True if distro_name == 'rhel7.9' else None), # DEVPROD-18187
             )
 
 

.evergreen/generated_configs/tasks.yml

@@ -431,6 +431,7 @@ tasks:
   - name: compile-only-rhel7.9-gcc-cxx11-debug
     run_on: rhel7.9-large
     tags: [compile-only, rhel7.9, cxx11, gcc, debug]
+    disable: true
     commands:
       - command: expansions.update
         params:
@@ -451,6 +452,7 @@ tasks:
   - name: compile-only-rhel7.9-gcc-cxx14-debug
     run_on: rhel7.9-large
     tags: [compile-only, rhel7.9, cxx14, gcc, debug]
+    disable: true
     commands:
       - command: expansions.update
         params:

CHANGELOG.md

@@ -17,6 +17,12 @@ Changes prior to 3.9.0 are documented as [release notes on GitHub](https://githu
 
 - CMake 3.16.0 or newer is required when `ENABLE_TESTS=ON` for compatibility with the updated Catch2 library version (3.7.0 -> 3.8.1).
 - Bump the minimum required C Driver version to [2.0.2](https://github.com/mongodb/mongo-c-driver/releases/tag/2.0.2).
+- Minimum supported compiler versions to build from source are updated to the following:
+  - GCC 8.1 (from GCC 4.8.2).
+    - Users on RHEL 7 may consult Red Hat's ["Hello World - installing GCC on RHEL 7"](https://developers.redhat.com/HW/gcc-RHEL-7) or ["How to install GCC 8 and Clang/LLVM 6 on Red Hat Enterprise Linux 7"](https://developers.redhat.com/blog/2019/03/05/yum-install-gcc-8-clang-6) for instructions on how to obtain GCC 8 or newer.
+  - Clang 3.8 (from Clang 3.5).
+  - Apple Clang 13.1 with Xcode 13.4.1 (from Apple Clang 5.1 with Xcode 5.1).
+  - MSVC 19.0.24210 with Visual Studio 2015 Update 3 (from MSVC 19.0.23506 with Visual Studio 2015 Update 1).
 
 ## 4.1.0
 

CMakeLists.txt

@@ -25,20 +25,32 @@ set(CMAKE_MODULE_PATH
 option(BUILD_TESTING "When ENABLE_TESTS=ON, include test targets in the \"all\" target")
 
 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.8.2")
-        message(FATAL_ERROR "Insufficient GCC version - GCC 4.8.2+ required")
+    # https://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html
+    # https://gcc.gnu.org/projects/cxx-status.html
+    # https://gcc.gnu.org/releases.html
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "8.1")
+        message(FATAL_ERROR "GCC 8.1 or newer is required")
     endif()
 elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "19.0.23506")
-        message(FATAL_ERROR "Insufficient Microsoft Visual C++ version - MSVC 2015 Update 1+ required")
+    # https://en.wikipedia.org/wiki/Microsoft_Visual_C%2B%2B#Internal_version_numbering
+    # https://learn.microsoft.com/en-us/cpp/overview/compiler-versions
+    # https://learn.microsoft.com/en-us/cpp/overview/visual-cpp-language-conformance
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "19.0.24210")
+        message(FATAL_ERROR "Visual Studio 13 2015 Update 3 or newer is required")
     endif()
 elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.1")
-        message(FATAL_ERROR "Insufficient Apple clang version - XCode 5.1+ required")
+    # https://developer.apple.com/xcode/cpp/
+    # https://en.wikipedia.org/wiki/Xcode#Version_comparison_table
+    # https://trac.macports.org/wiki/XcodeVersionInfo
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "13.1")
+        message(FATAL_ERROR "Xcode 13.4.1 or newer is required")
     endif()
 elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.5")
-        message(FATAL_ERROR "Insufficient clang version - clang 3.5+ required")
+    # https://releases.llvm.org/
+    # https://clang.llvm.org/cxx_status.html
+    # https://libcxx.llvm.org/#c-standards-conformance
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "3.8")
+        message(FATAL_ERROR "Clang 3.8 or newer is required")
     endif()
 else()
     message(WARNING "Unknown compiler... recklessly proceeding without a version check")