[build] Remove CXX11 flag

No longer needed after we vendorized so many deps.

CMakeLists.txt

@@ -22,7 +22,6 @@ set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
 
 set(CMAKE_OSX_DEPLOYMENT_TARGET 10.11)
 
-option(WITH_CXX11ABI "Use the C++11 ABI" ON)
 option(WITH_COVERAGE "Enable coverage reports" OFF)
 option(WITH_OSMESA   "Use OSMesa headless backend" OFF)
 option(WITH_EGL      "Use EGL backend" OFF)
@@ -40,13 +39,6 @@ include(cmake/mason.cmake)
 include(cmake/xcode.cmake)
 include(cmake/doxygen.cmake)
 
-if(WITH_CXX11ABI)
-    set(MASON_CXXABI_SUFFIX -cxx11abi)
-    add_definitions(-D_GLIBCXX_USE_CXX11_ABI=1)
-else()
-    add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
-endif()
-
 if(WITH_OSMESA AND WITH_EGL)
     message(FATAL_ERROR "WITH_OSMESA and WITH_EGL are mutually exclusive.")
 endif()

Makefile

@@ -1,6 +1,5 @@
 export BUILDTYPE ?= Debug
 export IS_LOCAL_DEVELOPMENT ?= true
-export WITH_CXX11ABI ?= $(shell scripts/check-cxx11abi.sh)
 export TARGET_BRANCH ?= master
 
 CMAKE ?= cmake
@@ -378,7 +377,6 @@ $(LINUX_BUILD): $(BUILD_DEPS)
 	mkdir -p $(LINUX_OUTPUT_PATH)
 	(cd $(LINUX_OUTPUT_PATH) && $(CMAKE) -G Ninja ../../.. \
 		-DCMAKE_BUILD_TYPE=$(BUILDTYPE) \
-		-DWITH_CXX11ABI=${WITH_CXX11ABI} \
 		-DWITH_COVERAGE=${WITH_COVERAGE} \
 		-DWITH_OSMESA=${WITH_OSMESA} \
 		-DWITH_EGL=${WITH_EGL})
@@ -476,7 +474,6 @@ $(QT_BUILD): $(BUILD_DEPS)
 		-DMASON_PLATFORM_VERSION=$(MASON_PLATFORM_VERSION) \
 		-DWITH_QT_DECODERS=${WITH_QT_DECODERS} \
 		-DWITH_QT_I18N=${WITH_QT_I18N} \
-		-DWITH_CXX11ABI=${WITH_CXX11ABI} \
 		-DWITH_COVERAGE=${WITH_COVERAGE})
 
 ifeq ($(HOST_PLATFORM), macos)
@@ -491,7 +488,6 @@ $(MACOS_QT_PROJ_PATH): $(BUILD_DEPS)
 		-DMASON_PLATFORM_VERSION=$(MASON_PLATFORM_VERSION) \
 		-DWITH_QT_DECODERS=${WITH_QT_DECODERS} \
 		-DWITH_QT_I18N=${WITH_QT_I18N} \
-		-DWITH_CXX11ABI=${WITH_CXX11ABI} \
 		-DWITH_COVERAGE=${WITH_COVERAGE})
 
 .PHONY: qtproj
@@ -518,7 +514,6 @@ $(QNX_QT_BUILD): $(BUILD_DEPS)
 		-DMBGL_PLATFORM=qt \
 		-DWITH_QT_DECODERS=${WITH_QT_DECODERS} \
 		-DWITH_QT_I18N=${WITH_QT_I18N} \
-		-DWITH_CXX11ABI=${WITH_CXX11ABI} \
 		-DWITH_COVERAGE=${WITH_COVERAGE})
 
 .PHONY: qnx-qt-lib

circle.yml

@@ -260,7 +260,7 @@ commands:
         command: |
           mkdir -p build
           cd build
-          cmake -DWITH_CXX11ABI=${WITH_CXX11ABI:0} -DWITH_COVERAGE=${WITH_COVERAGE:0} -DWITH_OSMESA=${WITH_OSMESA:0} -DWITH_EGL=${WITH_EGL:0} ..
+          cmake -DWITH_COVERAGE=${WITH_COVERAGE:0} -DWITH_OSMESA=${WITH_OSMESA:0} -DWITH_EGL=${WITH_EGL:0} ..
           cd ..
   build-node:
     steps:
@@ -798,7 +798,6 @@ jobs:
       JOBS: 4
       BUILDTYPE: RelWithDebInfo
       WITH_EGL: 1
-      WITH_CXX11ABI: 0
     steps:
       - install-dependencies
       - build-node
@@ -855,7 +854,6 @@ jobs:
       JOBS: 4
       BUILDTYPE: Debug
       WITH_EGL: 1
-      WITH_CXX11ABI: 1
     steps:
       - install-dependencies
       - check-if-this-job-can-be-skipped
@@ -920,7 +918,6 @@ jobs:
       JOBS: 4
       BUILDTYPE: Debug
       WITH_EGL: 1
-      WITH_CXX11ABI: 0
       DISPLAY: :0
     steps:
       - install-dependencies

platform/linux/config.cmake

@@ -101,14 +101,6 @@ macro(mbgl_platform_core)
         PRIVATE nunicode
         PUBLIC -lz
     )
-
-    if(WITH_CXX11ABI)
-        # Statically link libstdc++ when we're using the new STL ABI
-        target_link_libraries(mbgl-core
-            PUBLIC -static-libstdc++
-            PUBLIC -Wl,-Bsymbolic-functions
-        )
-    endif()
 endmacro()
 
 

scripts/check-cxx11abi.sh

@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-set -o pipefail
-
-if ! [ `uname -s` = 'Linux' ] || \
-   ! command -v readelf > /dev/null || \
-   ! command -v c++filt > /dev/null; then
-    echo -n "OFF"
-    exit 0
-fi
-
-# check-cxx11abi.dat is a binary just so we can use the loader
-# to take care of finding the libstdc++ which can be tricky.
-LIBSTDCPP=$(ldd $(dirname $0)/check-cxx11abi.dat |grep libstdc++ |cut -d' ' -f3)
-
-if [ $(readelf -Ws $LIBSTDCPP |c++filt |grep -c ::__cxx11::) -gt 0 ]; then
-    echo -n "ON"
-else
-    echo -n "OFF"
-fi