[Mesa-dev] [RFC] travis: lower SWR requirement to GCC 4.8, aka std=c++11

[Emil Velikov]

From: Emil Velikov <emil.velikov at collabora.com>

With ealier commit we relaxed the requirement from C++14 to C++11.
Update the build script so that it

Cc: Tim Rowley <timothy.o.rowley at intel.com
Fixes: 0b80b025021 ("swr: relax c++ requirement from c++14 to c++11")
Signed-off-by: Emil Velikov <emil.velikov at collabora.com>
---
Tim, this does _not_ quite work, hence I'm sending it as RFC.
The current build failures can be seen here

Autotools
https://travis-ci.org/evelikov/Mesa/jobs/250043586
Scons
https://travis-ci.org/evelikov/Mesa/jobs/250043595

Although I expect additional issues, since w/o the patch a local build 
throws the following:

src/gallium/drivers/swr/rasterizer/core/api.cpp: In function ‘void* SwrCreateContext(SWR_CREATECONTEXT_INFO*)’:
src/gallium/drivers/swr/rasterizer/core/api.cpp:111:64: warning: ‘new’ of type ‘SWR_STATS’ with extended alignment 64 [-Waligned-new=]
     pContext->pStats = new SWR_STATS[pContext->NumWorkerThreads];
                                                                ^
src/gallium/drivers/swr/rasterizer/core/api.cpp:111:64: note: uses ‘void* operator new [](std::size_t)’, which does not have an alignment parameter
src/gallium/drivers/swr/rasterizer/core/api.cpp:111:64: note: use ‘-faligned-new’ to enable C++17 over-aligned new support

src/gallium/drivers/swr/rasterizer/core/threads.cpp: In function ‘void CreateThreadPool(SWR_CONTEXT*, THREAD_POOL*)’:
src/gallium/drivers/swr/rasterizer/core/threads.cpp:989:72: warning: ‘new’ of type ‘SWR_STATS’ with extended alignment 64 [-Waligned-new=]
         pContext->dcRing[dc].dynState.pStats = new SWR_STATS[numThreads];
                                                                        ^
src/gallium/drivers/swr/rasterizer/core/threads.cpp:989:72: note: uses ‘void* operator new [](std::size_t)’, which does not have an alignment parameter
src/gallium/drivers/swr/rasterizer/core/threads.cpp:989:72: note: use ‘-faligned-new’ to enable C++17 over-aligned new support


 .travis.yml | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 4fde6f45f4a..fa52bf96f16 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -57,8 +57,8 @@ matrix:
         - MAKE_CHECK_COMMAND="true"
         - LLVM_VERSION=3.9
         - LLVM_CONFIG="llvm-config-${LLVM_VERSION}"
-        - OVERRIDE_CC="gcc-5"
-        - OVERRIDE_CXX="g++-5"
+        - OVERRIDE_CC="gcc-4.8"
+        - OVERRIDE_CXX="g++-4.8"
         - DRI_LOADERS="--disable-glx --disable-gbm --disable-egl"
         - DRI_DRIVERS=""
         - GALLIUM_ST="--enable-dri --disable-opencl --disable-xa --disable-nine --disable-xvmc --disable-vdpau --disable-va --disable-omx --disable-gallium-osmesa"
@@ -67,13 +67,11 @@ matrix:
       addons:
         apt:
           sources:
-            - ubuntu-toolchain-r-test
             - llvm-toolchain-trusty-3.9
           packages:
             # LLVM packaging is broken and misses these dependencies
             - libedit-dev
             # From sources above
-            - g++-5
             - llvm-3.9-dev
             # Common
             - xz-utils
@@ -250,19 +248,17 @@ matrix:
         - LLVM_CONFIG="llvm-config-${LLVM_VERSION}"
         # Keep it symmetrical to the make build. There's no actual SWR, yet.
         - SCONS_CHECK_COMMAND="true"
-        - OVERRIDE_CC="gcc-5"
-        - OVERRIDE_CXX="g++-5"
+        - OVERRIDE_CC="gcc-4.8"
+        - OVERRIDE_CXX="g++-4.8"
       addons:
         apt:
           sources:
-            - ubuntu-toolchain-r-test
             - llvm-toolchain-trusty-3.9
           packages:
             - scons
             # LLVM packaging is broken and misses these dependencies
             - libedit-dev
             # From sources above
-            - g++-5
             - llvm-3.9-dev
             # Common
             - xz-utils
-- 
2.13.0