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Full Discussion: Help running a Makefile from within a .sh script?
Top Forums UNIX for Beginners Questions & Answers Help running a Makefile from within a .sh script? Post 303005280 by Scott on Monday 16th of October 2017 01:18:44 PM
Old 10-16-2017
Arghh... really doesn't help that I had a file called makefile in my directory, which make was using instead of Makefile Smilie

Code:
populateMFiles() {
#echo '.PHONY: all clean build
echo 'clean:
        rm -rf cfile.c cfile.out
build:
        gcc -g -Wall -pedantic -Wextra cfile.c -w -o cfile.out
all: clean build'
}

This does work fine, as far as I can see, so it would help to see the actual make error, not the one your script is displaying.

Saying nothing as to the rest of your code because I haven't read it, it would be slightly cleaner using cat instead of echo to print the Makefile and C file.

e.g.
Code:
populateMFiles() {
cat << EOF
clean:
        rm -rf cfile.c cfile.out
build:
        gcc -g -Wall -pedantic -Wextra cfile.c -w -o cfile.out
all: clean build
EOF
}

Code:
$ functions
populateMFiles() {
cat << EOF
clean:
	rm -rf cfile.out
build:
	gcc -g -Wall -pedantic -Wextra cfile.c -w -o cfile.out
all: clean build
EOF
}

$ cat cfile.c
int main( void ) {
  printf( "%s", "Hello world!\n" );
  return 1;
}

$ populateMFiles > Makefile

$ cat Makefile
clean:
	rm -rf cfile.out
build:
	gcc -g -Wall -pedantic -Wextra cfile.c -w -o cfile.out
all: clean build

$ make all
rm -rf cfile.out
gcc -g -Wall -pedantic -Wextra cfile.c -w -o cfile.out

$ ls cfile.out
cfile.out

$ ./cfile.out
Hello world!

Your makefile may remove the cfile.c file, so you need to run "populateCFiles" every time before you run make (as clean is the first rule), make all or make clean.
This User Gave Thanks to Scott For This Post:
cherryTango
 

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LEARN ABOUT OPENDARWIN

md

md(1)							    BSD General Commands Manual 						     md(1)

NAME

     md -- process raw dependency files produced by cpp -MD

SYNOPSIS

     md [-d] [-f] [-m makefile] [-u makefile] [-o outputfile] [-v] [-x] [-D c|d|m|o|t|D]

DESCRIPTION

     The md command basically does two things:

     Process the raw dependency files produced by the cpp -MD option.  There is one line in the file for every #include encountered, but there are
     repeats and patterns like .../dir1/../dir2 that appear which should reduce to .../dir2.  md canonicalizes and flushes repeats from the depen-
     dency list.  It also sorts the file names and "fills" them to a 78 character line.

     md also updates the makefile directly with the dependency information, so the .d file can be thrown away (see d option).  This is done to
     save space.  md assumes that dependency information in the makefile is sorted by .o file name and it procedes to merge in (add/or replace [as
     appropriate]) the new dependency lines that it has generated.  For time effeciency, md assumes that any .d files it is given that were cre-
     ated before the creation date of the "makefile" were processed already.  It ignores them unless the force flag [f] is given.

FLAG SUMMARY

     -d delete the .d file after it is processed

     -f force an update of the dependencies in the makefile even though the makefile is more recent than the .n file (This implies that md has
     been run already.)

     -m makefile specify the makefile to be upgraded.  The defaults are makefile and then Makefile

     -u makefile like -m above, but the file will be created if necessary

     -o outputfile specify an output file for the dependencies other than a makefile

     -v set the verbose flag

     -x expunge old dependency info from makefile

     -D c|d|m|o|t|D subswitch for debugging.  can be followed by any of "c", "d", "m", "o", "t", "D" meaning:

	      c       show file contents
	      d       show new dependency crunching
	      m       show generation of makefile
	      o       show files being opened
	      t       show time comparisons
	      D       show very low level debugging

SEE ALSO

     make(1)

BUGS

     Old, possibly not used by anyone.

HISTORY

     The md utility was written by Robert V Baron at Carnegie-Mellon University.

BSD
								   June 2, 2019 							       BSD
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