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The Linux Development Platform Configuring, Using, and ... - Classes

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CH03.fm Page 54 Monday, October 7, 2002 8:33 PM<br />

54 Chapter 3 • Compilers <strong>and</strong> Assemblers<br />

| |-- SDL<br />

| |-- X11 -> root/usr/X11R6/include/X11<br />

| |-- linux<br />

| |-- mozilla<br />

| |-- ncurses<br />

| |-- objc<br />

| |-- openssl<br />

| |-- pcap<br />

| | `-- net<br />

| |-- pgsql<br />

| | `-- utils<br />

| |-- root<br />

| | `-- usr<br />

| | `-- X11R6<br />

| | `-- include<br />

| | `-- X11<br />

| |-- schily<br />

| | `-- scg<br />

| |-- slang<br />

| |-- ucd-snmp<br />

| |-- w3c-libwww<br />

| |-- wnn<br />

| `-- wnn6<br />

|-- man<br />

| |-- man1<br />

| `-- man7<br />

`-- share<br />

95 directories<br />

[root@conformix gcc-3.0.4]#<br />

N O T E Detailed instructions for compiling <strong>and</strong> installing GCC<br />

are available at http://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_4.html<br />

as well as at http://gcc.gnu.org/install/.<br />

3.2.3 Environment Variables<br />

<strong>The</strong> GCC compiler relies on many environment variables for its operation. <strong>The</strong>se variables<br />

are used for different purposes including location of library <strong>and</strong> header files, location of<br />

helping programs <strong>and</strong> so on. Some important variables <strong>and</strong> their respective use are introduced<br />

in this section.<br />

TMPDIR<br />

This variable shows location of temporary file location. GCC uses<br />

this location to store temporary files during the compiling <strong>and</strong><br />

linking processes.

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