qnx use c99

.github/workflows/qnx.yml

@@ -12,6 +12,8 @@ concurrency:
 env:
   CC: qcc
   CXX: q++
+  CFLAGS: "-V gcc_ntox86_64"
+  CXXFLAGS: "-V gcc_ntox86_64"
   CMAKE_FLAGS: "-DCMAKE_BUILD_TYPE=DEBUG -DCARES_STATIC=ON -DCARES_STATIC_PIC=ON -G Ninja -DCMAKE_SYSTEM_NAME=QNX -DCMAKE_FIND_ROOT_PATH=${{ github.workspace }}/qnx800/target/qnx8 -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY"
   CONFIG_OPTS: "--host=x86_64-unknown-nto-qnx8.0.0"
 

configure.ac

@@ -246,9 +246,9 @@ if test "$enable_warnings" = "yes"; then
   AX_APPEND_COMPILE_FLAGS([-Wall -Wextra -Waggregate-return -Wcast-align -Wcast-qual -Wconversion -Wdeclaration-after-statement -Wdouble-promotion -Wfloat-equal -Wformat-security -Winit-self -Wjump-misses-init -Wlogical-op -Wmissing-braces -Wmissing-declarations -Wmissing-format-attribute -Wmissing-include-dirs -Wmissing-prototypes -Wnested-externs -Wno-coverage-mismatch -Wold-style-definition -Wpacked -Wpedantic -Wpointer-arith -Wredundant-decls -Wshadow -Wsign-conversion -Wstrict-overflow -Wstrict-prototypes -Wtrampolines -Wundef -Wunreachable-code -Wunused -Wvariadic-macros -Wvla -Wwrite-strings -Werror=implicit-int -Werror=implicit-function-declaration -Werror=partial-availability -Wno-long-long ],
     [AM_CFLAGS], [-Werror])
 
-  dnl Android requires c99, all others should use c90
+  dnl Android and QNX require c99, all others should use c90
   case $host_os in
-    *android*)
+    *android*|*qnx*)
       AX_APPEND_COMPILE_FLAGS([-std=c99], [AM_CFLAGS], [-Werror])
       ;;
     *)