- Check for --as-needed linking flag
git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@318 3ecf2c5c-341e-0410-92b4-d18e462d057c
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@ -63,6 +63,7 @@ AC_PROG_CXX
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AC_CHECK_CXXFLAG([Wall])
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AC_CHECK_CXXFLAG([pedantic])
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AC_CHECK_CXXFLAG([Wextra])
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AC_CHECK_LDFLAG([--as-needed])
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AC_PROG_INSTALL
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@ -23,6 +23,7 @@
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# better if we don't install our macros...
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# -> aclocal_DATA = ...
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macros = compilerflags.m4 \
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linkingflags.m4 \
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ac_python_devel.m4 \
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ac_pkg_swig.m4 \
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ac_python_module.m4
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@ -0,0 +1,26 @@
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dnl **************************************************
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dnl Copyright (C) 2004 Matteo Settenvini
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dnl **************************************************
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dnl ---------- AX_CHECK_LDFLAG ---------------------
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dnl This macro checks if a particular flag for the
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dnl C++ compiler works. If it is so, it adds the flag
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dnl to the CXXFLAGS variable.
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dnl Example of usage : AC_CHECK_LDFLAG([--as-needed])
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dnl -------------------------------------------------
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AC_DEFUN([AC_CHECK_LDFLAG],
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[ AC_REQUIRE([AC_PROG_CC])dnl
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AC_MSG_CHECKING([whether the linker supports the $1 flag])
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ac_check_ldflags=$LDFLAGS
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LDFLAGS="-Wl,$1"
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AC_LANG_PUSH([C])
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AC_LINK_IFELSE(
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AC_LANG_PROGRAM([], [return 0;]),
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[AC_MSG_RESULT([yes])
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LDFLAGS="-Wl,$1 $ac_check_ldflags" ],
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[AC_MSG_RESULT([no])
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LDFLAGS=$ac_check_ldflags ]
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)
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AC_LANG_POP
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])dnl ------- AC_CHECK_LDFLAG ----------------------
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