Added 6 new units.

git-svn-id: svn://svn.code.sf.net/p/dist/code/trunk/dist@197 2592e710-e01b-42a5-8df0-11608a6cc53d

6 files changed, 234 insertions, 0 deletions

diff --git a/mcon/U/d_clearenv.U b/mcon/U/d_clearenv.U
new file mode 100644
index 0000000..d8e892f
--- /dev/null
+++ b/mcon/U/d_clearenv.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_clearenv: Trylink cat i_stdlib
+?MAKE:	-pick add $@ %<
+?S:d_clearenv:
+?S:	This variable conditionally defines the HAS_CLEARENV
+?S:	symbol, which indicates to the C program that clearenv()
+?S:	is available to clear the environment.
+?S:.
+?C:HAS_CLEARENV:
+?C:	This symbol is defined when clearenv() is there to clear the
+?C:	environment.
+?C:.
+?H:#$d_clearenv HAS_CLEARENV
+?H:.
+?LINT: set d_clearenv
+: do we have clearenv?
+$cat >try.c <<EOC
+#$i_stdlib I_STDLIB
+#ifdef I_STDLIB
+#include <stdlib.h>
+#endif
+int main(void)
+{
+	return clearenv();
+}
+EOC
+cyn=clearenv
+set d_clearenv
+eval $trylink
+
diff --git a/mcon/U/d_getprogname.U b/mcon/U/d_getprogname.U
new file mode 100644
index 0000000..a5a6175
--- /dev/null
+++ b/mcon/U/d_getprogname.U
@@ -0,0 +1,40 @@
+?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_getprogname: Trylink cat i_stdlib
+?MAKE:	-pick add $@ %<
+?S:d_getprogname:
+?S:	This variable conditionally defines the HAS_GETPROGNAME
+?S:	symbol, which indicates to the C program that getprogname()
+?S:	is available to get the program name.
+?S:.
+?C:HAS_GETPROGNAME:
+?C:	This symbol is defined when getprogname() is there to get the
+?C:	program name.
+?C:.
+?H:#$d_getprogname HAS_GETPROGNAME
+?H:.
+?LINT: set d_getprogname
+: can we use getprogname?
+$cat >try.c <<EOC
+#include <stdio.h>
+#$i_stdlib I_STDLIB
+#ifdef I_STDLIB
+#include <stdlib.h>
+#endif
+int main(void)
+{
+	printf("%s\n", getprogname());
+	return 0;
+}
+EOC
+cyn=getprogname
+set d_getprogname
+eval $trylink
+
diff --git a/mcon/U/d_proginvocname.U b/mcon/U/d_proginvocname.U
new file mode 100644
index 0000000..1ebd177
--- /dev/null
+++ b/mcon/U/d_proginvocname.U
@@ -0,0 +1,40 @@
+?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_proginvocname: Trylink cat
+?MAKE:	-pick add $@ %<
+?S:d_proginvocname:
+?S:	This variable conditionally defines the HAS_PROGRAM_INVOCATION_NAME
+?S:	symbol, which indicates to the C program that the two variables
+?S:	program_invocation_name and program_invocation_short_name are set
+?S:	at startup time.
+?S:.
+?C:HAS_PROGRAM_INVOCATION_NAME:
+?C:	This symbol is defined when the C startup sets the two variables
+?C:	program_invocation_name and program_invocation_short_name.  To get
+?C:	these definitions, <errno.h> must be included with __USE_GNU defined.
+?C:.
+?H:#$d_proginvocname HAS_PROGRAM_INVOCATION_NAME
+?H:.
+?LINT: set d_proginvocname
+: do we have the program_invocation_name variable?
+$cat >try.c <<EOC
+#include <stdio.h>
+#define __USE_GNU
+#include <errno.h>
+int main(void)
+{
+	printf("%s\n%s\n", program_invocation_name, program_invocation_short_name);
+	return 0;
+}
+EOC
+cyn="whether C startup sets program_invocation_name"
+set d_proginvocname
+eval $trylink
+
diff --git a/mcon/U/d_setenv.U b/mcon/U/d_setenv.U
new file mode 100644
index 0000000..9fcfd52
--- /dev/null
+++ b/mcon/U/d_setenv.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_setenv: Trylink cat i_stdlib
+?MAKE:	-pick add $@ %<
+?S:d_setenv:
+?S:	This variable conditionally defines the HAS_SETENV
+?S:	symbol, which indicates to the C program that setenv()
+?S:	is available to change or add an environment variable.
+?S:.
+?C:HAS_SETENV:
+?C:	This symbol is defined when setenv() is available to change or
+?C:	add an environment variable.
+?C:.
+?H:#$d_setenv HAS_SETENV
+?H:.
+?LINT: set d_setenv
+: do we have setenv?
+$cat >try.c <<EOC
+#$i_stdlib I_STDLIB
+#ifdef I_STDLIB
+#include <stdlib.h>
+#endif
+int main(void)
+{
+	return setenv("foo", "bar", 1);
+}
+EOC
+cyn=setenv
+set d_setenv
+eval $trylink
+
diff --git a/mcon/U/d_setprogname.U b/mcon/U/d_setprogname.U
new file mode 100644
index 0000000..0e53fdb
--- /dev/null
+++ b/mcon/U/d_setprogname.U
@@ -0,0 +1,40 @@
+?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_setprogname: Trylink cat i_stdlib
+?MAKE:	-pick add $@ %<
+?S:d_setprogname:
+?S:	This variable conditionally defines the HAS_SETPROGNAME
+?S:	symbol, which indicates to the C program that setprogname()
+?S:	is available to set the program name.
+?S:.
+?C:HAS_SETPROGNAME:
+?C:	This symbol is defined when setprogname() is there to set the
+?C:	program name.
+?C:.
+?H:#$d_setprogname HAS_SETPROGNAME
+?H:.
+?LINT: set d_setprogname
+: can we use setprogname?
+$cat >try.c <<EOC
+#include <sys/types.h>
+#$i_stdlib I_STDLIB
+#ifdef I_STDLIB
+#include <stdlib.h>
+#endif
+int main(void)
+{
+	setprogname("test");
+	return 0;
+}
+EOC
+cyn=setprogname
+set d_setprogname
+eval $trylink
+
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
+