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Diffstat (limited to 'mcon/U/d_unsetenv.U')
| -rw-r--r-- | mcon/U/d_unsetenv.U | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/mcon/U/d_unsetenv.U b/mcon/U/d_unsetenv.U new file mode 100644 index 0000000..8fcd511 --- /dev/null +++ b/mcon/U/d_unsetenv.U @@ -0,0 +1,38 @@ +?RCS: +?RCS: Copyright (c) 2015 Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?MAKE:d_unsetenv: Trylink cat i_stdlib +?MAKE: -pick add $@ %< +?S:d_unsetenv: +?S: This variable conditionally defines the HAS_UNSETENV +?S: symbol, which indicates to the C program that unsetenv() +?S: is available to delete an environment variable. +?S:. +?C:HAS_UNSETENV: +?C: This symbol is defined when unsetenv() is available to delete +?C: an environment variable. +?C:. +?H:#$d_unsetenv HAS_UNSETENV +?H:. +?LINT: set d_unsetenv +: do we have unsetenv? +$cat >try.c <<EOC +#$i_stdlib I_STDLIB +#ifdef I_STDLIB +#include <stdlib.h> +#endif +int main(void) +{ + return unsetenv("foo"); +} +EOC +cyn=unsetenv +set d_unsetenv +eval $trylink + |