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>
This commit is contained in:
Jakub Narebski 2008-01-18 02:03:51 +01:00 committed by Junio C Hamano
parent 5221ecbc51
commit bfa8fccf47
3 changed files with 9 additions and 0 deletions

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@ -38,6 +38,8 @@ all::
#
# Define NO_SETENV if you don't have setenv in the C library.
#
# Define NO_UNSETENV if you don't have unsetenv in the C library.
#
# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
#
# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.

View File

@ -40,6 +40,7 @@ NO_MEMMEM=@NO_MEMMEM@
NO_STRLCPY=@NO_STRLCPY@
NO_STRTOUMAX=@NO_STRTOUMAX@
NO_SETENV=@NO_SETENV@
NO_UNSETENV=@NO_UNSETENV@
NO_MKDTEMP=@NO_MKDTEMP@
NO_ICONV=@NO_ICONV@
OLD_ICONV=@OLD_ICONV@

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@ -356,6 +356,12 @@ AC_CHECK_FUNC(setenv,
[NO_SETENV=YesPlease])
AC_SUBST(NO_SETENV)
#
# Define NO_UNSETENV if you don't have unsetenv in the C library.
AC_CHECK_FUNC(unsetenv,
[NO_UNSETENV=],
[NO_UNSETENV=YesPlease])
AC_SUBST(NO_UNSETENV)
#
# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
AC_CHECK_FUNC(mkdtemp,
[NO_MKDTEMP=],