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| author | Bent Bisballe Nyeng <deva@aasimon.org> | 2016-12-10 11:36:55 +0100 |
|---|---|---|
| committer | Bent Bisballe Nyeng <deva@aasimon.org> | 2016-12-10 11:36:55 +0100 |
| commit | 3abdd4484cca514988ff190f0547811d48f41031 (patch) | |
| tree | f8749e9644300eba7d3d8a883511eec4b671c257 | |
| parent | 38934122192a7c1fff8686c7a49ffce5b0fa399c (diff) | |
Added check for -Wl,--no-undefined or -Wl,-undefined,error in the CXX to be able to support no-undefined during linking with clang.
| -rw-r--r-- | configure.ac | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 8f2c71a..120944c 100644 --- a/configure.ac +++ b/configure.ac @@ -70,9 +70,37 @@ HUGIN_PARM="-DDISABLE_HUGIN" AC_ARG_WITH([debug], AS_HELP_STRING([--with-debug], [Build with debug support])) +dnl =========================== +dnl Check for -Wl,--no-undefined or -Wl,-undefined,error support +dnl =========================== +TMP_CXXFLAGS="$CXXFLAGS" +AC_MSG_CHECKING([whether CXX supports '-Wl,--no-undefined']) +CXXFLAGS=-Wl,--no-undefined +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], + [ AC_MSG_RESULT([yes]) + NO_UNDEFINED_PARAM=-Wl,--no-undefined + ], + [ AC_MSG_RESULT([no]) + AC_MSG_CHECKING([whether CXX supports '-Wl,-undefined,error']) + CXXFLAGS=-Wl,-undefined,error + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], + [AC_MSG_RESULT([yes]) + NO_UNDEFINED_PARAM=-Wl,-undefined,error + ], + [AC_MSG_RESULT([no]) + NO_UNDEFINED_PARAM="" + ] + ) + ] +) +CXXFLAGS="$TMP_CXXFLAGS" + +dnl =========================== +dnl Set up debug compile args if the user requested it +dnl =========================== AS_IF([test "x$with_debug" == "xyes"], [AC_MSG_WARN([*** Building with debug support!]) - CXXFLAGS="$CXXFLAGS -Wall -Werror -g -Wl,--no-undefined" + CXXFLAGS="$CXXFLAGS -Wall -Werror -g $NO_UNDEFINED_PARAM" HUGIN_PARM=""] ) |