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466fd1b23f
* acgeneral.m4 (AC_CANONICAL_THING): define, not AC_DEFUN. Don't AC_PROVIDE, there is no need. When calling `config.sub`, also || exit 1, to catch failures from config.sub. * acspecific.m4 (AC_SYS_LONG_FILE_NAMES): Use ac_val, not val. (AC_EXEEXT): Use ac_file, not file. * tests/actest.m4: New file, holding extra Autoconf macros used during the testing. (AC_ENV_SAVE): New macro, save the sh variables in a file. * tests/suite.m4 (AT_TEST_MACRO, Generation of configure.in): include actest.m4, and call twice AC_ENV_SAVE to compare the variables before and after the macro. * tests/Makefile.am (macro.m4): Don't test macros that are required: they will be tested somewhere else.
31 lines
1.2 KiB
Plaintext
31 lines
1.2 KiB
Plaintext
dnl actest.m4 -*- autoconf -*-
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dnl Additional Autoconf macros to ease testing.
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# AC_ENV_SAVE(FILE)
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# ------------------
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# Save the environment, but the variables we are allowed to touch.
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# This is to check no test touches the user name space.
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# FIXME: There are surely better ways. Explore for instance if
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# we can ask help from AC_SUBST. We have the right to touch what
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# is AC_SUBST.
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AC_DEFUN(AC_ENV_SAVE,
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[(set) 2>&1 |
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grep -v '^ac_' |
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# Some variables we are allowed to touch
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egrep -v '^(CC|CFLAGS|CPP|GCC|CXX|CXXFLAGS|CXXCPP|GXX|LIBS|LIBOBJS|LDFLAGS)=' |
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egrep -v '^(AWK|LEX|LEXLIB|LEX_OUTPUT_ROOT|LN_S|M4|RANLIB|SET_MAKE|YACC)=' |
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egrep -v '^INSTALL(_(DATA|PROGRAM|SCRIPT))?=' |
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egrep -v '^(CYGWIN|ISC|MINGW32|MINIX|EMXOS2|EXEEXT|OBJEXT)=' |
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egrep -v '^(NEED_SETGID)=' |
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egrep -v '^(X_(CFLAGS|LIBS|PRE_LIBS)|x_(includes|libraries)|have_x)=' |
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egrep -v '^(host|build|target)(_(alias|cpu|vendor|os))?=' |
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egrep -v '^(cross_compiling)=' |
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egrep -v '^(interpval)=' |
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# Some variables some shells use and change
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egrep -v '^(_|PIPESTATUS|OLDPWD)=' |
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# There maybe variables spread on several lines, eg IFS, remove the dead
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# lines
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fgrep = >$1
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])
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