Building things without root access - Revision history

64.134.50.170: /* Compiling CPAN Modules */

2005-06-29T11:44:29Z

Compiling CPAN Modules

64.134.50.170: /* Compiling CPAN Modules */

2005-06-29T10:47:01Z

Compiling CPAN Modules

64.134.50.170: /* Compiling CPAN Modules */

2005-06-29T10:45:51Z

Compiling CPAN Modules

129.6.61.113: /* Compiling based on non-global libs */

2005-06-02T18:36:52Z

Compiling based on non-global libs

161.253.9.181 at 23:18, 10 May 2005

2005-05-10T23:18:18Z

161.253.9.181 at 22:22, 10 May 2005

2005-05-10T22:22:47Z

New page

Here are a few notes on building C programs on a system you don't own and don't have root access to. Obviously, this has a few strange operational implications.

=A pseudo-root=

I'll be building things using a subdirectory of my home dir, /user/inst, as the basis of everything (basically replacing what would be /usr/local in normal installs).

=./configure=

If the autoconf variables are typical, things should run correctly by

./configure --prefix=/user/inst
make
make install

Run ./configure --help to find out if there are more variables to set.

=Compiling based on non-global libs=

Compiling a simple program based on Gnu MP normally looks like this:

gcc -o sample sample.c -lgmp

Add a couple things to make it work using your own version:

gcc -o sample sample.c -lgmp -I- -I/user/inst/include -L/user/inst/lib

Any normal -I switches should come before -I-.

@@ Line 47: / Line 47: @@
   CCFLAGS = -DDEBIAN -fno-strict-aliasing -I/user/inst/include -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
-make and make install should then run as expected.  To use the resulting module, you'll have to indicate your local libraries directory:
+make and make install should then run as expected.  To use the resulting module, you'll have to indicate your local libraries directories.  An include file can be used to abbreviate this.  I call mine LLIB.pm (for Local LIBraries):
   BEGIN {
     my $sub = "perl/5.6.1";
     my $super = "/user/inst";
-    unshift(@INC, "$super/local/lib/$sub", "$super/share/$sub");
+    unshift(@INC,
+  }
 ;

@@ Line 35: / Line 35: @@
 Actually, if what you're building depends on something else you've built this way, you'll also need to include other directories, as explained later.  We'll assume we've put that code in a file called LLIB.pm and conveniently symlinked that file to the build directory.  Now do
-  perk -MLLIB Makefile.PL PREFIX=/user/inst
+  perl -MLLIB Makefile.PL PREFIX=/user/inst
 Then, view the resulting Makefile.  Find what is already in CCFLAGS and LDDLFLAGS.  For example,

← Older revision		Revision as of 10:45, 29 June 2005
Line 32:		Line 32:

	perl Makefile.PL PREFIX=/user/inst		perl Makefile.PL PREFIX=/user/inst
		+
		+	Actually, if what you're building depends on something else you've built this way, you'll also need to include other directories, as explained later. We'll assume we've put that code in a file called LLIB.pm and conveniently symlinked that file to the build directory. Now do
		+
		+	perk -MLLIB Makefile.PL PREFIX=/user/inst

	Then, view the resulting Makefile. Find what is already in CCFLAGS and LDDLFLAGS. For example,		Then, view the resulting Makefile. Find what is already in CCFLAGS and LDDLFLAGS. For example,

@@ Line 21: / Line 21: @@
   gcc -o sample sample.c -lgmp
-Add a couple things to make it work using your own version:
+Add some things to make it work using your own version:
   gcc -o sample sample.c -lgmp -I- -I/user/inst/include -L/user/inst/lib
-Any normal -I switches should come before -I-.  The -I- is optional if you use the header name is quotes instead of angles.
+Any normal <code>-I</code> switches should come before <code>-I-</code>.  The <code>-I-</code> is optional if you use the header name in quotes instead of angles.
 =Compiling CPAN Modules=

← Older revision		Revision as of 23:18, 10 May 2005
Line 25:		Line 25:
	gcc -o sample sample.c -lgmp -I- -I/user/inst/include -L/user/inst/lib		gcc -o sample sample.c -lgmp -I- -I/user/inst/include -L/user/inst/lib

−	Any normal -I switches should come before -I-.	+	Any normal -I switches should come before -I-. The -I- is optional if you use the header name is quotes instead of angles.
		+
		+	=Compiling CPAN Modules=
		+
		+	This one is tricky. Start by running
		+
		+	perl Makefile.PL PREFIX=/user/inst
		+
		+	Then, view the resulting Makefile. Find what is already in CCFLAGS and LDDLFLAGS. For example,
		+
		+	LDDLFLAGS = -shared -L/usr/local/lib
		+	CCFLAGS = -DDEBIAN -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
		+
		+	Change them as necessary.
		+
		+	LDDLFLAGS = -shared -L/user/inst/include -L/usr/local/lib
		+	CCFLAGS = -DDEBIAN -fno-strict-aliasing -I/user/inst/include -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
		+
		+	make and make install should then run as expected. To use the resulting module, you'll have to indicate your local libraries directory:
		+
		+	use lib '/user/inst/local/lib/perl/5.6.1','/user/inst/share/perl/5.6.1';
		+
		+	An include file can be used to abbreviate this:
		+
		+	BEGIN {
		+	my $sub = "perl/5.6.1";
		+	my $super = "/user/inst";
		+	unshift(@INC, "$super/local/lib/$sub", "$super/share/$sub");
		+	}
		+	1;