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8bf19fe82e
Erlang is similar to Java in that it doesn’t compile to standalone machine code; the output of ‘erlc’ is byte-code files that are then interpreted by ‘erl’. We handle this poorly in a whole bunch of ways, particularly when cross-compiling. This patch fixes up the more serious problems: - AC_COMPILE_IFELSE now actually works when AC_LANG([Erlang]) is in effect. - ‘conftest.beam’ is now deleted in several more places where it could be created. - The various AC_ERLANG_* macros that interrogate the runtime environment do so by invoking ‘$ERL’ directly, rather than using AC_RUN_IFELSE, and thus do not crash the configure script when we think we’re cross-compiling. (It is not clear to me whether they get the correct answer when cross-compiling, but this should still be strictly an improvement.) - The Erlang-related tests have been streamlined. Further improvements are definitely possible, but we’d have to teach the infrastructure to make $ac_objext language-specific first, which seems like too big of a change for 2.70. (This patch is all fallout from a logically unrelated testsuite change which is coming up next. Gotta love the fundamental interconnectedness of things.) * lib/autoconf/general.m4 (_AC_COMPILE_IFELSE_BODY) (_AC_LINK_IFELSE_BODY): Delete conftest.beam as well as conftest.$ac_objext. * lib/autoconf/erlang.m4 (AC_ERLANG_PATH_ERLC, AC_ERLANG_PATH_ERL): Don’t repeat work done by AC_PATH_TOOL. (Erlang $ac_compile): Fake an .o file so AC_TRY_COMPILE will be happy. (AC_LANG_COMPILER(Erlang)): AC_REQUIRE AC_ERLANG_NEED_ERLC, not AC_ERLANG_PATH_ERLC. Also AC_REQUIRE AC_ERLANG_NEED_ERL so AC_RUN_IFELSE works reliably. (AC_ERLANG_CHECK_LIB, AC_ERLANG_SUBST_ROOT_DIR) (AC_ERLANG_SUBST_LIB_DIR, AC_ERLANG_SUBST_ERTS_VER): Use $ERL -eval, not AC_RUN_IFELSE. No need to AC_REQUIRE AC_ERLANG_NEED_ERLC. * tests/erlang.at: Don’t test anything here that’s tested adequately by acerlang.at; document which macros those are expected to be. Remove unnecessary AC_ERLANG_PATH_ERL/ERLC invocations throughout. (AT_CHECK_MACRO([Erlang])): Rename test to ‘Erlang basic compilation’; expect both AC_COMPILE_IFELSE and AC_RUN_IFELSE to work; handle cross compilation mode properly. * tests/mktests.sh: Exclude from acerlang.at all macros completely covered by erlang.at. |
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| autoconf | ||
| Autom4te | ||
| autoscan | ||
| autotest | ||
| emacs | ||
| m4sugar | ||
| autom4te.in | ||
| freeze.mk | ||
| local.mk | ||