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Top Forums UNIX for Advanced & Expert Users Makefile executing another Makefile first? Post 302438606 by wwuster on Tuesday 20th of July 2010 07:21:53 AM
Old 07-20-2010
Makefile executing another Makefile first?

I have 2 libraries in 2 different directories that I build with Makefiles.

library B depends on library A. If I modify a .cpp file in library A and run lib B's Makefile can I have B's makefile to automatically rebuild library A?

I am now rebuilding A, followed by B... but I'd like B to rebuild A automatically if it needs rebuilding. This is a streamlined example, but my real situation is
more complicated. I'd like the makefile for the final application to cause all
dependent libraries to build, if necessary so that I don't have to manually build them in the correct order.

I've tried "include ../A/Makefile" in B's Makefile, but I get errors. I think its because the directory doesn't change to ../A

Makefile:81: warning: overriding commands for target `all'
../A/Makefile:78: warning: ignoring old commands for target `all'
Makefile:98: warning: overriding commands for target `clean'
../A/Makefile:99: warning: ignoring old commands for target `clean'
make: *** No rule to make target `tinystr.o', needed by `A.a'. Stop.


Does anyone know how to make this work?

William
 

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DH_AUTO_INSTALL(1)						     Debhelper							DH_AUTO_INSTALL(1)

NAME
dh_auto_install - automatically runs make install or similar SYNOPSIS
dh_auto_install [buildsystemoptions] [debhelperoptions] [--params] DESCRIPTION
dh_auto_install is a debhelper program that tries to automatically install built files. It does so by running the appropriate command for the build system it detects the package uses. For example, if there's a Makefile and it contains a install target, then this is done by running make (or MAKE, if the environment variable is set). If there is a setup.py or Build.PL, it is used. Note that the Ant build system does not support installation, so dh_auto_install will not install files built using Ant. Unless --destdir option is specified, the files are installed into debian/package/ if there is only one binary package. In the multiple binary package case, the files are instead installed into debian/tmp/, and should be moved from there to the appropriate package build directory using dh_install(1). DESTDIR is used to tell make where to install the files. If the Makefile was generated by MakeMaker from a Makefile.PL, it will automatically set PREFIX=/usr too, since such Makefiles need that. This is intended to work for about 90% of packages. If it doesn't work, or tries to use the wrong install target, you're encouraged to skip using dh_auto_install at all, and just run make install manually. OPTIONS
See "BUILD SYSTEM OPTIONS" in debhelper(7) for a list of common build system selection and control options. --destdir=directory Install files into the specified directory. If this option is not specified, destination directory is determined automatically as described in the "DESCRIPTION" section. -- params Pass params to the program that is run, after the parameters that dh_auto_install usually passes. SEE ALSO
debhelper(7) This program is a part of debhelper. AUTHOR
Joey Hess <joeyh@debian.org> 11.1.6ubuntu2 2018-05-10 DH_AUTO_INSTALL(1)
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