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| author | Ben Gamari <ben@smart-cactus.org> | 2021-04-02 12:03:43 -0400 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-05-05 05:42:38 -0400 |
| commit | 958c6fbdc7ba76313f6f6d110f5a0ee2474d26b6 (patch) | |
| tree | 28042a1582176404d9fba26d54d27f7ec80c74de /m4 | |
| parent | 0de2012cc05b12a810d27f5c9009c870cf6fabfd (diff) | |
| download | haskell-958c6fbdc7ba76313f6f6d110f5a0ee2474d26b6.tar.gz | |
configure: Move libdw search logic to macro
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/fp_find_libdw.m4 | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/m4/fp_find_libdw.m4 b/m4/fp_find_libdw.m4 new file mode 100644 index 0000000000..ce830c0fa8 --- /dev/null +++ b/m4/fp_find_libdw.m4 @@ -0,0 +1,57 @@ +dnl ** Have libdw? +dnl -------------------------------------------------------------- +dnl Sets UseLibdw. +AC_DEFUN([FP_FIND_LIBDW], +[ + AC_ARG_WITH([libdw-libraries], + [AS_HELP_STRING([--with-libdw-libraries=ARG], + [Find libraries for libdw in ARG [default=system default]]) + ], + [ + LibdwLibDir="$withval" + LIBDW_LDFLAGS="-L$withval" + ]) + + AC_SUBST(LibdwLibDir) + + AC_ARG_WITH([libdw-includes], + [AS_HELP_STRING([--with-libdw-includes=ARG], + [Find includes for libdw in ARG [default=system default]]) + ], + [ + LibdwIncludeDir="$withval" + LIBDW_CFLAGS="-I$withval" + ]) + + AC_SUBST(LibdwIncludeDir) + + UseLibdw=NO + USE_LIBDW=0 + AC_ARG_ENABLE(dwarf-unwind, + [AS_HELP_STRING([--enable-dwarf-unwind], + [Enable DWARF unwinding support in the runtime system via elfutils' libdw [default=no]])]) + if test "$enable_dwarf_unwind" = "yes" ; then + CFLAGS2="$CFLAGS" + CFLAGS="$LIBDW_CFLAGS $CFLAGS" + LDFLAGS2="$LDFLAGS" + LDFLAGS="$LIBDW_LDFLAGS $LDFLAGS" + + AC_CHECK_LIB(dw, dwfl_attach_state, + [AC_CHECK_HEADERS([elfutils/libdw.h], [break], []) + UseLibdw=YES], + [AC_MSG_ERROR([Cannot find system libdw (required by --enable-dwarf-unwind)])]) + + CFLAGS="$CFLAGS2" + LDFLAGS="$LDFLAGS2" + fi + + AC_SUBST(UseLibdw) + if test $UseLibdw = "YES" ; then + USE_LIBDW=1 + AC_SUBST([CabalHaveLibdw],[True]) + else + AC_SUBST([CabalHaveLibdw],[False]) + fi + AC_DEFINE_UNQUOTED([USE_LIBDW], [$USE_LIBDW], [Set to 1 to use libdw]) +]) + |