B.8 Concept Index 
This is an alphabetical list of the files, tools, and concepts
introduced in this document.
|  | Index Entry | Section | 
|---|
| 
 | 
| " |  |  | 
|---|
|  | ‘"$@"’ | 11.6 Shell Substitutions | 
| 
 | 
| $ |  |  | 
|---|
|  | $((expression)) | 11.6 Shell Substitutions | 
|  | $(commands) | 11.6 Shell Substitutions | 
|  | $<, explicit rules, andVPATH | 12.14.3 $<Not Supported in Explicit Rules | 
|  | ${#var} | 11.6 Shell Substitutions | 
|  | ${var##word} | 11.6 Shell Substitutions | 
|  | ${var#word} | 11.6 Shell Substitutions | 
|  | ${var%%word} | 11.6 Shell Substitutions | 
|  | ${var%word} | 11.6 Shell Substitutions | 
|  | ${var=expanded-value} | 11.6 Shell Substitutions | 
|  | ${var=literal} | 11.6 Shell Substitutions | 
| 
 | 
| 6 |  |  | 
|---|
|  | 64-bit libraries | 15.8 Setting Site Defaults | 
| 
 | 
| @ |  |  | 
|---|
|  | ‘@&t@’ | 8.1.6 Quadrigraphs | 
|  | ‘@S|@’ | 8.1.6 Quadrigraphs | 
| 
 | 
| ^ |  |  | 
|---|
|  | ^ quoting | 11.6 Shell Substitutions | 
| 
 | 
| _ |  |  | 
|---|
|  | _m4_divert_diversion | 18.6.2 New Macros | 
| 
 | 
| ` |  |  | 
|---|
|  | `commands` | 11.6 Shell Substitutions | 
| 
 | 
| A |  |  | 
|---|
|  | absolute file names, detect | 11.4 File System Conventions | 
|  | ‘acconfig.h’ | 18.2 ‘acconfig.h’ | 
|  | ‘aclocal.m4’ | 3. Making configureScripts | 
|  | Ash | 11.1 Shellology | 
|  | autoconf | 3.4 Using autoconfto Createconfigure | 
|  | Autoconf upgrading | 18.5 Upgrading From Version 1 | 
|  | Autoconf upgrading | 18.6 Upgrading From Version 2.13 | 
|  | Autoconf version | 4.2 Dealing with Autoconf versions | 
|  | autoheader | 4.9.2 Using autoheaderto Create ‘config.h.in’ | 
|  | Autoheader macros | 4.9.3 Autoheader Macros | 
|  | autom4te debugging tips | 8.4 Debugging via autom4te | 
|  | Autom4te Library | 8.2.1 Invoking autom4te | 
|  | ‘autom4te.cache’ | 8.2.1 Invoking autom4te | 
|  | ‘autom4te.cfg’ | 8.2.1 Invoking autom4te | 
|  | Automake | 2.1 Automake | 
|  | Automatic remaking | 4.8.5 Automatic Remaking | 
|  | automatic rule rewriting and VPATH | 12.14.4 Automatic Rule Rewriting | 
|  | autopoint | 3.5 Using autoreconfto UpdateconfigureScripts | 
|  | autoreconf | 3.5 Using autoreconfto UpdateconfigureScripts | 
|  | autoscan | 3.2 Using autoscanto Create ‘configure.ac’ | 
|  | Autotest | 19. Generating Test Suites with Autotest | 
|  | AUTOTEST_PATH | 19.3 Running testsuiteScripts | 
|  | autoupdate | 18.3 Using autoupdateto Modernize ‘configure.ac’ | 
| 
 | 
| B |  |  | 
|---|
|  | Back trace | 3.4 Using autoconfto Createconfigure | 
|  | Back trace | 8.2.1 Invoking autom4te | 
|  | balancing parentheses | 8.1.7 Dealing with unbalanced parentheses | 
|  | Bash | 11.1 Shellology | 
|  | Bash 2.05 and later | 11.1 Shellology | 
|  | Bootstrap | 20.3 How Can I Bootstrap? | 
|  | BSD makeand ‘obj/’ | 12.12 The ‘obj/’ Subdirectory and Make | 
|  | buffer overruns | 13.5 Buffer Overruns and Subscript Errors | 
|  | Build directories | 4.8.4 Build Directories | 
| 
 | 
| C |  |  | 
|---|
|  | C function portability | 5.5.1 Portability of C Functions | 
|  | C types | 5.9 Types | 
|  | Cache | 7.4 Caching Results | 
|  | Cache variable | 7.4.1 Cache Variable Names | 
|  | Cache, enabling | 16.10 configureInvocation | 
|  | Canonical system type | 14.2 Getting the Canonical System Type | 
|  | carriage return, deleting | 11.13 Limitations of Usual Tools | 
|  | changequote | 8.1.5 changequoteis Evil | 
|  | Coding style | 10.6 Coding Style | 
|  | Command Substitution | 11.6 Shell Substitutions | 
|  | Commands for configuration | 4.10 Running Arbitrary Configuration Commands | 
|  | Comments in ‘Makefile’ rules | 12.11 Comments in Make Rules | 
|  | Common autoconf behavior | 5.1 Common Behavior | 
|  | Compilers | 5.10 Compilers and Preprocessors | 
|  | composing variable names | 9.2 Support for indirect variable names | 
|  | ‘config.h’ | 4.9 Configuration Header Files | 
|  | ‘config.h.bot’ | 18.2 ‘acconfig.h’ | 
|  | ‘config.h.in’ | 4.9.1 Configuration Header Templates | 
|  | ‘config.h.top’ | 18.2 ‘acconfig.h’ | 
|  | config.site | 15.8 Setting Site Defaults | 
|  | config.status | 17. config.status Invocation | 
|  | config.sub | 14.1 Specifying target triplets | 
|  | Configuration actions | 4.6 Performing Configuration Actions | 
|  | Configuration commands | 4.10 Running Arbitrary Configuration Commands | 
|  | Configuration file creation | 4.7 Creating Configuration Files | 
|  | Configuration Header | 4.9 Configuration Header Files | 
|  | Configuration Header Template | 4.9.1 Configuration Header Templates | 
|  | Configuration links | 4.11 Creating Configuration Links | 
|  | configure | 3. Making configureScripts | 
|  | configure | 16. Running configureScripts | 
|  | Configure subdirectories | 4.12 Configuring Other Packages in Subdirectories | 
|  | ‘configure.ac’ | 3. Making configureScripts | 
|  | ‘configure.in’ | 3. Making configureScripts | 
|  | Copyright Notice | 4.3 Notices in configure | 
|  | Copyright Notice | 19.2 Writing ‘testsuite.at’ | 
|  | Creating configuration files | 4.7 Creating Configuration Files | 
|  | Creating temporary files | 11.13 Limitations of Usual Tools | 
|  | Cross compilation | 18.6.3 Hosts and Cross-Compilation | 
| 
 | 
| D |  |  | 
|---|
|  | Darwin | 6.7 Systemology | 
|  | Data structure, set | 8.3.9 Set manipulation in M4 | 
|  | ‘datarootdir’ | 4.8.3 Changed Directory Variables | 
|  | debugging tips | 8.4 Debugging via autom4te | 
|  | Declaration, checking | 5.7 Declarations | 
|  | Default includes | 5.1.2 Default Includes | 
|  | deleting carriage return | 11.13 Limitations of Usual Tools | 
|  | Dependencies between macros | 10.4 Dependencies Between Macros | 
|  | descriptors | 9.4 File Descriptor Macros | 
|  | Descriptors | 11.3 File Descriptors | 
|  | Directories, build | 4.8.4 Build Directories | 
|  | Directories, installation | 4.8.2 Installation Directory Variables | 
|  | division, integer | 13.2.5 Signed Integer Division and Integer Overflow | 
|  | dnl | 10.1 Macro Definitions | 
|  | dnl | 10.6 Coding Style | 
|  | double-colon rules and VPATH | 12.14.2 VPATHand Double-colon Rules | 
| 
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