Require at least gcc7 (#3268)

Fixes: #3267
NVIDIA · Jan 8, 2025 · 2da2a52 · 2da2a52
1 parent 65a98a4
commit 2da2a52
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Showing 5 changed files with 10 additions and 63 deletions.
diff --git a/.devcontainer/cuda11.1-gcc6/devcontainer.json b/.devcontainer/cuda11.1-gcc6/devcontainer.json
diff --git a/README.md b/README.md
@@ -260,6 +260,8 @@ Unless otherwise specified, CCCL supports the same host compilers as the latest
 - [Linux](https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#host-compiler-support-policy)
 - [Windows](https://docs.nvidia.com/cuda/cuda-installation-guide-microsoft-windows/index.html#system-requirements)
 
+For GCC on Linux, at least 7.x is required.
+
 When using older CUDA Toolkits, we also only support the host compilers of the latest CUDA Toolkit,
 but at least the most recent host compiler of any supported older CUDA Toolkit.
 

diff --git a/ci/matrix.yaml b/ci/matrix.yaml
@@ -11,7 +11,7 @@ workflows:
 
   pull_request:
     # Old CTK
-    - {jobs: ['build'], std: 'minmax', ctk: '11.1', cxx: ['gcc6', 'gcc9', 'clang9', 'msvc2017']}
+    - {jobs: ['build'], std: 'minmax', ctk: '11.1', cxx: ['gcc7', 'gcc9', 'clang9', 'msvc2017']}
     # Current CTK build-only
     - {jobs: ['build'], std: [11, 14], cxx: ['gcc7', 'clang9']}
     - {jobs: ['build'], std: 'max', cxx: ['gcc8', 'gcc9', 'gcc10', 'gcc11', 'gcc12']}
@@ -55,7 +55,7 @@ workflows:
     # Python and c/parallel jobs:
     - {jobs: ['test'], project: ['cccl_c_parallel', 'python'], ctk: '12.6'}
     # cccl-infra:
-    - {jobs: ['infra'], project: 'cccl', ctk: '11.1', cxx: ['gcc6',  'clang9']}
+    - {jobs: ['infra'], project: 'cccl', ctk: '11.1', cxx: ['gcc7',  'clang9']}
     - {jobs: ['infra'], project: 'cccl', ctk: '12.0', cxx: ['gcc12', 'clang14']}
     - {jobs: ['infra'], project: 'cccl', ctk: 'curr', cxx: ['gcc',   'clang']}
 
@@ -65,7 +65,7 @@ workflows:
     - {jobs: ['test_gpu'],  project: 'thrust', cmake_options: '-DTHRUST_DISPATCH_TYPE=Force32bit'}
     - {jobs: ['test_gpu'],  project: 'thrust', cmake_options: '-DTHRUST_DISPATCH_TYPE=Force64bit'}
     # Old CTK
-    - {jobs: ['build'], std: 'all', ctk: '11.1', cxx: ['gcc6', 'gcc7', 'gcc8', 'gcc9', 'clang9', 'msvc2017']}
+    - {jobs: ['build'], std: 'all', ctk: '11.1', cxx: ['gcc7', 'gcc8', 'gcc9', 'clang9', 'msvc2017']}
     - {jobs: ['build'], std: 'all', ctk: '11.8', cxx: ['gcc11'], sm: '60;70;80;90'}
     # Current CTK build-only
     - {jobs: ['build'], std: 'all', cxx: ['gcc7', 'gcc8', 'gcc9', 'gcc10', 'gcc11', 'gcc12']}
@@ -96,7 +96,7 @@ workflows:
     - {jobs: ['test'],  project: 'cudax', ctk: [        'curr'], std: 'all', cxx: ['clang18']}
 
 #  # These are waiting on the NVKS nodes:
-#    - {jobs: ['test'],  ctk: '11.1', gpu: 'v100',     sm: 'gpu', cxx: 'gcc6',    std: [11]}
+#    - {jobs: ['test'],  ctk: '11.1', gpu: 'v100',     sm: 'gpu', cxx: 'gcc7',    std: [11]}
 #    - {jobs: ['test'],  ctk: '11.1', gpu: 't4',       sm: 'gpu', cxx: 'clang9',  std: [17]}
 #    - {jobs: ['test'],  ctk: '11.8', gpu: 'rtx2080',  sm: 'gpu', cxx: 'gcc11',   std: [17]}
 #    - {jobs: ['test'],  ctk: 'curr', gpu: 'rtxa6000', sm: 'gpu', cxx: 'gcc7',    std: [14]}
@@ -151,7 +151,6 @@ host_compilers:
     container_tag: 'gcc'
     exe: 'g++'
     versions:
-      6:  { stds: [11, 14,       ] }
       7:  { stds: [11, 14, 17,   ] }
       8:  { stds: [11, 14, 17,   ] }
       9:  { stds: [11, 14, 17,   ] }

diff --git a/cub/cub/util_cpp_dialect.cuh b/cub/cub/util_cpp_dialect.cuh
@@ -80,8 +80,8 @@
 #  ifndef CCCL_IGNORE_DEPRECATED_COMPILER
 
 // Compiler checks:
-#    if _CCCL_COMPILER(GCC, <, 5)
-CUB_COMPILER_DEPRECATION(GCC 5.0);
+#    if _CCCL_COMPILER(GCC, <, 7)
+CUB_COMPILER_DEPRECATION(GCC 7.0);
 #    elif _CCCL_COMPILER(CLANG, <, 7)
 CUB_COMPILER_DEPRECATION(Clang 7.0);
 #    elif _CCCL_COMPILER(MSVC, <, 19, 10)

diff --git a/thrust/thrust/detail/config/cpp_dialect.h b/thrust/thrust/detail/config/cpp_dialect.h
@@ -68,8 +68,8 @@
 #ifndef CCCL_IGNORE_DEPRECATED_COMPILER
 
 // Compiler checks:
-#  if _CCCL_COMPILER(GCC, <, 5)
-THRUST_COMPILER_DEPRECATION(GCC 5.0);
+#  if _CCCL_COMPILER(GCC, <, 7)
+THRUST_COMPILER_DEPRECATION(GCC 7.0);
 #  elif _CCCL_COMPILER(CLANG, <, 7)
 THRUST_COMPILER_DEPRECATION(Clang 7.0);
 #  elif _CCCL_COMPILER(MSVC, <, 19, 10)