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Add c++14 to QBT_ADD_CONFIG when appropriate

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Chocobo1 2019-03-24 14:53:20 +08:00
commit efe50baddc
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2 changed files with 16 additions and 21 deletions
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15
configure.ac
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@ -210,7 +210,9 @@ PKG_CHECK_MODULES(zlib,
LIBS="$zlib_LIBS $LIBS"])
# Check if already in >= C++14 mode because of the flags returned by one of the above packages
AC_MSG_CHECKING([if compiler is using C++14 or later mode])
TMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS=""
AC_MSG_CHECKING([if compiler defaults to C++14 or later mode])
AC_COMPILE_IFELSE([DETECT_CPP14_PROGRAM()],
[AC_MSG_RESULT([yes])
QBT_CXX14_FOUND="yes"],
@ -221,8 +223,7 @@ AC_COMPILE_IFELSE([DETECT_CPP14_PROGRAM()],
# and if yes, enable it leaving a warning to the user
AS_IF([test "x$QBT_CXX14_FOUND" = "xno"],
[AC_MSG_CHECKING([if compiler supports C++14])
TMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -std=c++14"
CXXFLAGS="-std=c++14"
AC_COMPILE_IFELSE([DETECT_CPP14_PROGRAM()],
[AC_MSG_RESULT([yes])
AC_MSG_CHECKING([if C++14 is disabled by the set compiler flags])
@ -230,16 +231,14 @@ AS_IF([test "x$QBT_CXX14_FOUND" = "xno"],
CXXFLAGS="-std=c++14 $TMP_CXXFLAGS"
AC_COMPILE_IFELSE([DETECT_CPP14_PROGRAM()],
[AC_MSG_RESULT([no])
CXXFLAGS="$TMP_CXXFLAGS -std=c++14"
AC_MSG_WARN([C++14 mode is now force enabled.
Make sure you use the same C++ mode for qBittorrent and its dependencies.
To explicitly set qBittorrent to a later mode use CXXFLAGS.
Example: `CXXFLAGS="\$CXXFLAGS -std=c++14" ./configure`])],
QBT_ADD_CONFIG="$QBT_ADD_CONFIG c++14"
AC_MSG_WARN([C++14 mode is now force enabled. The C++ mode should match the mode that other libraries were built with, otherwise you'll likely get linking errors.])],
[AC_MSG_RESULT([yes])
AC_MSG_ERROR([The compiler supports C++14 but the user or a dependency has explicitly enabled a lower mode.])])],
[AC_MSG_RESULT([no])
AC_MSG_ERROR([A compiler supporting C++14 is required.])])
])
CXXFLAGS="$TMP_CXXFLAGS"
# These are required because autoconf doesn't expand these **particular**
# vars automatically. And qmake cannot autoexpand them.