diff --git a/CMakeLists.txt b/CMakeLists.txt
index f6de54d97..8c2819f5e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -213,7 +213,7 @@ if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
         -Wno-unknown-pragmas
         -Wno-reorder)
     if(CMAKE_COMPILER_IS_GNUCXX)
-        list(APPEND warning_flags -Wno-unused-but-set-variable -Wno-maybe-uninitialized)
+        list(APPEND warning_flags -Wno-unused-but-set-variable -Wno-maybe-uninitialized -Wno-class-memaccess)
 
         # We keep the implicit fallthrough warning for now, but allow more
         # comments to silence it.
diff --git a/qrenderdoc/CMakeLists.txt b/qrenderdoc/CMakeLists.txt
index a3dab7f81..36afa729f 100644
--- a/qrenderdoc/CMakeLists.txt
+++ b/qrenderdoc/CMakeLists.txt
@@ -125,13 +125,14 @@ file(WRITE
      "\n"
      "OSX_ICONFILE=${CMAKE_CURRENT_BINARY_DIR}/RenderDoc.icns\n")
 
-# propagate build version info. Lots of escaping needed here to pass ""s into the define value
+# Ignore warnings - qmake has no way to do this per-file, so we must do it globally
 if(CMAKE_COMPILER_IS_GNUCXX)
     file(APPEND
         ${CMAKE_BINARY_DIR}/qrenderdoc/qrenderdoc_cmake.pri
-        "QMAKE_CXXFLAGS+=-Wno-unknown-warning -Wno-implicit-fallthrough\n")
+        "QMAKE_CXXFLAGS+=-Wno-unknown-warning -Wno-implicit-fallthrough -Wno-cast-function-type -Wno-stringop-truncation\n")
 endif()
 
+# propagate build version info. Lots of escaping needed here to pass ""s into the define value
 file(APPEND
     ${CMAKE_BINARY_DIR}/qrenderdoc/qrenderdoc_cmake.pri
     "DEFINES+=GIT_COMMIT_HASH='\\\\\"${GIT_COMMIT_HASH}\\\\\"'\n")
diff --git a/qrenderdoc/Code/pyrenderdoc/CMakeLists.txt b/qrenderdoc/Code/pyrenderdoc/CMakeLists.txt
index 8ba8c950b..dd5dff2cc 100644
--- a/qrenderdoc/Code/pyrenderdoc/CMakeLists.txt
+++ b/qrenderdoc/Code/pyrenderdoc/CMakeLists.txt
@@ -15,7 +15,13 @@ set(MODULE_INCLUDES
 set(MODULE_DEFINES
     PRIVATE -DRENDERDOC_PLATFORM_LINUX)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -Wno-unused-private-field")
+if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -Wno-unused-private-field")
+endif()
+
+if(CMAKE_COMPILER_IS_GNUCXX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-cast-function-type -Wno-stringop-truncation")
+endif()
 
 # Set up rpath to find librenderdoc.so
 set(CMAKE_SKIP_BUILD_RPATH TRUE)
diff --git a/renderdoc/driver/shaders/spirv/CMakeLists.txt b/renderdoc/driver/shaders/spirv/CMakeLists.txt
index 2664b1375..8ee73e4db 100644
--- a/renderdoc/driver/shaders/spirv/CMakeLists.txt
+++ b/renderdoc/driver/shaders/spirv/CMakeLists.txt
@@ -97,9 +97,17 @@ add_definitions(-DAMD_EXTENSIONS)
 add_definitions(-DNV_EXTENSIONS)
 
 set_source_files_properties(${glslang_sources}
-    PROPERTIES COMPILE_FLAGS "-Wno-ignored-qualifiers -Wno-unknown-warning-option -Wno-inconsistent-missing-override")
+    PROPERTIES COMPILE_FLAGS "-Wno-ignored-qualifiers")
+
+if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0)
+    set_source_files_properties(${glslang_dir}/glslang/MachineIndependent/reflection.cpp
+        PROPERTIES COMPILE_FLAGS "-Wno-implicit-fallthrough -Wno-ignored-qualifiers")
+endif()
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    set_property(SOURCE "${glslang_sources}"
+        APPEND PROPERTY COMPILE_FLAGS "-Wno-unknown-warning-option -Wno-inconsistent-missing-override")
+
     set_source_files_properties(${glslang_dir}/SPIRV/GlslangToSpv.cpp
         PROPERTIES COMPILE_FLAGS "-Wno-tautological-constant-out-of-range-compare")
 endif()
diff --git a/renderdoc/os/posix/posix_stringio.cpp b/renderdoc/os/posix/posix_stringio.cpp
index d68bcfdb7..1fa2ce496 100644
--- a/renderdoc/os/posix/posix_stringio.cpp
+++ b/renderdoc/os/posix/posix_stringio.cpp
@@ -222,7 +222,7 @@ void GetDefaultFiles(const char *logBaseName, string &capture_filename, string &
       temp_folder[--len] = 0;
   }
 
-  char temp_filename[2048] = {0};
+  char temp_filename[2048 + 128] = {0};
 
   snprintf(temp_filename, sizeof(temp_filename) - 1, "%s/RenderDoc/%s_%04d.%02d.%02d_%02d.%02d.rdc",
            temp_folder, mod, 1900 + now.tm_year, now.tm_mon + 1, now.tm_mday, now.tm_hour,
diff --git a/renderdoccmd/renderdoccmd.cpp b/renderdoccmd/renderdoccmd.cpp
index 16c059c5a..bf9da1180 100644
--- a/renderdoccmd/renderdoccmd.cpp
+++ b/renderdoccmd/renderdoccmd.cpp
@@ -1300,7 +1300,7 @@ int renderdoccmd(const GlobalEnvironment &env, std::vector<std::string> &argv)
     clean_up();
     return ret;
   }
-  catch(std::exception e)
+  catch(std::exception &e)
   {
     fprintf(stderr, "Unexpected exception: %s\n", e.what());