automake: config.site
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1 2.2.5 Overriding Default Configuration Setting with ‘config.site’
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1 When installing several packages using the same setup, it can be
1 convenient to create a file to capture common settings. If a file named
1 ‘PREFIX/share/config.site’ exists, ‘configure’ will source it at the
1 beginning of its execution.
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1 Recall the command from the previous section:
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1 ~/amhello-1.0 % ./configure --prefix ~/usr CC=gcc-3 \
1 CPPFLAGS=-I$HOME/usr/include LDFLAGS=-L$HOME/usr/lib
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1 Assuming we are installing many package in ‘~/usr’, and will always
1 want to use these definitions of ‘CC’, ‘CPPFLAGS’, and ‘LDFLAGS’, we can
1 automate this by creating the following ‘~/usr/share/config.site’ file:
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1 test -z "$CC" && CC=gcc-3
1 test -z "$CPPFLAGS" && CPPFLAGS=-I$HOME/usr/include
1 test -z "$LDFLAGS" && LDFLAGS=-L$HOME/usr/lib
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1 Now, any time a ‘configure’ script is using the ‘~/usr’ prefix, it
1 will execute the above ‘config.site’ and define these three variables.
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1 ~/amhello-1.0 % ./configure --prefix ~/usr
1 configure: loading site script /home/adl/usr/share/config.site
1 ...
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1 ⇒Setting Site Defaults (autoconf)Site Defaults, for more
1 information about this feature.
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