autoconf: Add checking for unsetenv function
Update configure.ac (and config.mak.in) by adding test for unsetenv
(NO_UNSETENV). Add comment about NO_UNSETENV to Makefile header, as
original commit 731043fd
adding compat/unsetenv.c didn't do that.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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2
Makefile
2
Makefile
@ -38,6 +38,8 @@ all::
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#
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# Define NO_SETENV if you don't have setenv in the C library.
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#
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# Define NO_UNSETENV if you don't have unsetenv in the C library.
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#
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# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
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#
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# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
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@ -40,6 +40,7 @@ NO_MEMMEM=@NO_MEMMEM@
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NO_STRLCPY=@NO_STRLCPY@
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NO_STRTOUMAX=@NO_STRTOUMAX@
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NO_SETENV=@NO_SETENV@
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NO_UNSETENV=@NO_UNSETENV@
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NO_MKDTEMP=@NO_MKDTEMP@
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NO_ICONV=@NO_ICONV@
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OLD_ICONV=@OLD_ICONV@
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@ -356,6 +356,12 @@ AC_CHECK_FUNC(setenv,
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[NO_SETENV=YesPlease])
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AC_SUBST(NO_SETENV)
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#
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# Define NO_UNSETENV if you don't have unsetenv in the C library.
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AC_CHECK_FUNC(unsetenv,
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[NO_UNSETENV=],
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[NO_UNSETENV=YesPlease])
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AC_SUBST(NO_UNSETENV)
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#
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# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
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AC_CHECK_FUNC(mkdtemp,
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[NO_MKDTEMP=],
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