backtrace_posix.cc fails to compile on AIX #7539

• Version: master
• Platform: AIX
• Subsystem: core

Compile failure on AIX: https://ci.nodejs.org/job/node-test-commit-aix/nodes=aix61-ppc64/242/console

  g++ '-DNODE_ARCH="ppc64"' '-DNODE_PLATFORM="aix"' '-DNODE_WANT_INTERNALS=1' '-DV8_DEPRECATION_WARNINGS=1' '-DNODE_USE_V8_PLATFORM=1' '-DNODE_HAVE_I18N_SUPPORT=1' '-DNODE_HAVE_SMALL_ICU=1' '-DHAVE_INSPECTOR=1' '-DV8_INSPECTOR_USE_STL=1' '-DHAVE_OPENSSL=1' '-D__POSIX__' '-D_LINUX_SOURCE_COMPAT' '-DUCONFIG_NO_TRANSLITERATION=1' '-DUCONFIG_NO_SERVICE=1' '-DUCONFIG_NO_REGULAR_EXPRESSIONS=1' '-DU_ENABLE_DYLOAD=0' '-DU_STATIC_IMPLEMENTATION=1' '-DU_HAVE_STD_STRING=0' '-DUCONFIG_NO_BREAK_ITERATION=0' '-DUCONFIG_NO_CONVERSION=1' '-DHTTP_PARSER_STRICT=0' '-D_LARGEFILE_SOURCE' '-D_FILE_OFFSET_BITS=64' -I../src -I../tools/msvs/genfiles -I../deps/uv/src/ares -I/home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/out/Release/obj/gen -I../deps/v8_inspector -I../deps/v8_inspector/deps/wtf -I/home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/out/Release/obj/gen/blink -I../deps/v8/include -I../deps/icu-small/source/i18n -I../deps/icu-small/source/common -I../deps/openssl/openssl/include -I../deps/zlib -I../deps/http_parser -I../deps/cares/include -I../deps/uv/include  -pthread -Wall -Wextra -Wno-unused-parameter -maix64 -O3 -fno-omit-frame-pointer -fno-rtti -fno-exceptions -std=gnu++0x -MMD -MF /home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/out/Release/.deps//home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/out/Release/obj.target/node_base/src/backtrace_posix.o.d.raw   -c -o /home/iojs/build/workspace/node-test-commit-aix/nodes/aix61-ppc64/out/Release/obj.target/node_base/src/backtrace_posix.o ../src/backtrace_posix.cc
../src/backtrace_posix.cc:16:22: fatal error: execinfo.h: No such file or directory
 #include 
                      ^

Related to: #6734

Have discussed fix with @gireeshpunathil , will test out PR soon