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becki:linux:build_tools
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| Beide Seiten der vorigen Revision Vorhergehende Überarbeitung Nächste Überarbeitung | Vorhergehende Überarbeitung | ||
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becki:linux:build_tools [2017-09-25 13:23] becki |
becki:linux:build_tools [2018-03-29 10:12] (aktuell) becki |
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| <note important>indent needs files with Unix line ends (''\n'') as input. Files with other line endings can be converted with ''fromdos'' or ''sbfromdos''</note> | <note important>indent needs files with Unix line ends (''\n'') as input. Files with other line endings can be converted with ''fromdos'' or ''sbfromdos''</note> | ||
| - | ===== gcc / g++ == | + | ===== GNU gcc / g++ == |
| - | [[http://gcc.gnu.org/onlinedocs/gcc/|Manual]] (Current Development) | + | See [[GNU GCC]] |
| - | * -c : Do not link | + | ===== GNU Gprof == |
| - | * -o file : Place output in file file. Applies to object files and executables | + | |
| - | * -Wall : enable most warnings | + | |
| - | See also: [[http://www.thegeekstuff.com/2011/10/c-program-to-an-executable/|Journey of a C Program to Linux Executable in 4 Stages]] | + | See [[GNU Gprof]] |
| ===== Make == | ===== Make == | ||
| - | [[http://www.gnu.org/software/make/manual/html_node/|Manual]] | + | See [[GNU Make]] |
| - | + | ||
| - | === Misc == | + | |
| - | + | ||
| - | * A line beginning with ''#'' is a comment | + | |
| - | * The variable ''$*'' contains FIXME | + | |
| - | * The variable ''$@'' or ''$(@)'' contains the name of the target (tested) | + | |
| - | * '@' at the beginning of a command runs the command but does not copy the line to stdout | + | |
| - | * '-' at the beginning of a command runs the command but does not abort make if command fails | + | |
| - | * Implicit rules example: ''file.o'' is made automatically from ''file.c'' with a command of the form `$(CC) -c $(CPPFLAGS) $(CFLAGS)' | + | |
| - | * ''%%make -n%%'' or ''%%make --dry-run%%'' - Don't actually run any commands; just print them. | + | |
| - | + | ||
| - | === Variable assignment == | + | |
| - | + | ||
| - | <code bash> | + | |
| - | a = Peter | + | |
| - | c = $(a) | + | |
| - | d := $(a) | + | |
| - | a = Franz | + | |
| - | + | ||
| - | test: | + | |
| - | @echo c expands to $(c) # Franz | + | |
| - | @echo d expands to $(d) # Peter | + | |
| - | </code> | + | |
| - | + | ||
| - | ==== rules for overwriting variables == | + | |
| - | + | ||
| - | # Every environment variable that make sees when it starts up is transformed into a make variable with the same name and value. | + | |
| - | # An explicit assignment in the makefile overrides the environment | + | |
| - | # An assignment in the makefile can be overridden by the command line argument, eg {{{make CFLAGS='-g -O' [target] }}} | + | |
| - | + | ||
| - | Sources: [[https://www.gnu.org/software/make/manual/html_node/Overriding.html|1]] [[https://www.gnu.org/software/make/manual/html_node/DESTDIR.html|2]] | + | |
| - | + | ||
| - | ==== CFLAGS usage == | + | |
| - | + | ||
| - | useres expect FIXME | + | |
| - | https://www.gnu.org/software/make/manual/html_node/Command-Variables.html#Command-Variables | + | |
| - | + | ||
| - | ==== Implicit rules == | + | |
| - | + | ||
| - | FIXME | + | |
| - | + | ||
| - | ==== Automatic variables == | + | |
| - | + | ||
| - | $@ does oviously not work in prerequsites, only in recipie! | + | |
| ===== pkg-config == | ===== pkg-config == | ||
becki/linux/build_tools.1506345806.txt.gz · Zuletzt geändert: 2017-09-25 13:23 von becki
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