have_symbol        76 src/JITModule.cpp     if (have_symbol("glXGetCurrentContext") && have_symbol("glDeleteTextures")) {
have_symbol        87 src/JITModule.cpp     if (have_symbol("aglCreateContext") && have_symbol("glDeleteTextures")) {
have_symbol       104 src/JITModule.cpp     if (have_symbol("MTLCreateSystemDefaultDevice")) {