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diff --git a/chapter05/bzip2-static-exp.sgml b/chapter05/bzip2-static-exp.sgml new file mode 100644 index 000000000..788de4298 --- /dev/null +++ b/chapter05/bzip2-static-exp.sgml @@ -0,0 +1,33 @@ +<sect2> +<title>Command explanations</title> + +<para> +<userinput>sed: </userinput> The sed command here searches for the +string "$(CC) $(CFLAGS) -o" and replaced it by "$(CC) $(CFLAGS) +$(LDFLAGS) -o" in the Makefile file. We make that modification so it +will be easier to link bzip2 statically. +</para> + +<para> +<userinput>...Makefile | make -f -:</userinput> Makefile +is the last parameter of the sed command which indicates the file to +search and replace in. sed normally sends the modified file to stdout +(standard output) which will be your console. With the construction we +use, sed's output will be piped to the make program. Normally when make +is started it tries to find a number of files like Makefile. But we have +modified the Makefile file so we don't want make to use it. The "-f -" +parameter tells make to read it's input from another file, or from stdin +(standard input) which the dash (-) implies. This is one way to do it. +Another way would be to have sed write the output to a different file +and tell make with the -f parameter to read that alternate file. +</para> + +<para> +<userinput>LDFLAGS=-static:</userinput> This is the second way we use to +link a package statically. This is also the most common way. As you'll +notice, the -all-static value is only used with the binutils package and +won't be used throughout the rest of this book. +</para> + +</sect2> + |