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build: fix qt5.7 build under macOS (#1469)

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OBJCXX's std flags don't get defined by our cxx macro. Rather than hard-coding
to c++11, just force OBJCXX to be the same as CXX unless the user specified
otherwise.
This commit is contained in:
UdjinM6 2017-05-12 01:01:03 +03:00 committed by GitHub
parent 11afc8f4ba
commit 11121747b8
1 changed files with 10 additions and 1 deletions
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11
configure.ac
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@ -38,7 +38,6 @@ else
CXXFLAGS_overridden=no
fi
AC_PROG_CXX
m4_ifdef([AC_PROG_OBJCXX],[AC_PROG_OBJCXX])
dnl By default, libtool for mingw refuses to link static libs into a dll for
dnl fear of mixing pic/non-pic objects, and import/export complications. Since
@ -50,6 +49,16 @@ case $host in
esac
dnl Require C++11 compiler (no GNU extensions)
AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory], [nodefault])
dnl Unless the user specified OBJCXX, force it to be the same as CXX. This ensures
dnl that we get the same -std flags for both.
m4_ifdef([AC_PROG_OBJCXX],[
if test "x${OBJCXX+set}" = "x"; then
OBJCXX="${CXX}"
fi
AC_PROG_OBJCXX
])
dnl Libtool init checks.
LT_INIT([pic-only])