fixes

Signed-off-by: Larry Gritz <lg@larrygritz.com>

Author: lgritz

.github/workflows/ci.yml

@@ -409,8 +409,8 @@ jobs:
           - desc: bleeding edge gcc15 C++23 py3.12 OCIO/libtiff/exr-main avx2
             nametag: linux-bleeding-edge
             runner: ubuntu-24.04
-            cc_compiler: gcc-15
-            cxx_compiler: g++-15
+            # cc_compiler: gcc-15
+            # cxx_compiler: g++-15
             cxx_std: 23
             fmt_ver: master
             opencolorio_ver: main
@@ -420,7 +420,8 @@ jobs:
             simd: avx2,f16c
             benchmark: 1
             gcc_action_ver: 15
-            setenvs: export LIBJPEGTURBO_VERSION=main
+            setenvs: export OIIO_CC=gcc-15 OIIO_CXX=g++-15
+                            LIBJPEGTURBO_VERSION=main
                             LIBPNG_VERSION=master
                             LIBRAW_VERSION=master
                             LIBTIFF_VERSION=master
@@ -435,6 +436,7 @@ jobs:
                             QT_VERSION=0 INSTALL_OPENCV=0 USE_OPENVDB=0
                             UHDR_CMAKE_C_COMPILER=gcc
                             UHDR_CMAKE_CXX_COMPILER=g++
+                            OPENCOLORIO_CXX=c++
                             # The installed OpenVDB has a TLS conflict with Python 3.8
             # Ensure we are testing all the deps we think we are. We would
             # like this test to have minimal missing dependencies.