It’s strange to see so many people using shell scripting for this. I was looking for a way to use native makefile syntax, because I’m writing this outside of any target. You can use the wildcard function to check if file exists: ifeq ($(UNAME),Darwin) SHELL := /opt/local/bin/bash OS_X := true else ifneq (,$(wildcard /etc/redhat-release)) OS_RHEL … Read more
The shell function. You can use shell function: current_dir = $(shell pwd). Or shell in combination with notdir, if you need not absolute path: current_dir = $(notdir $(shell pwd)). Update. Given solution only works when you are running make from the Makefile’s current directory. As @Flimm noted: Note that this returns the current working directory, … Read more
In the CMakeLists.txt file, create a cache variable, as documented here: SET(FAB “po” CACHE STRING “Some user-specified option”) Source: http://cmake.org/cmake/help/v2.8.8/cmake.html#command:set Then, either use the GUI (ccmake or cmake-gui) to set the cache variable, or specify the value of the variable on the cmake command line: cmake -DFAB:STRING=po Source: http://cmake.org/cmake/help/v2.8.8/cmake.html#opt:-Dvar:typevalue Modify your cache variable to a … Read more
I had it on the Makefile MAPS+=reverse/db.901:550:2001.ip6.arpa lastserial: ${MAPS} ./updateser ${MAPS} It’s because of the : in the file name. I solved this with ——– notice / / v v MAPS+=reverse/db.901\:550\:2001.ip6.arpa lastserial: ${MAPS} ./updateser ${MAPS}
In my opinion, directories should not be considered targets of your makefile, either in technical or in design sense. You should create files and if a file creation needs a new directory then quietly create the directory within the rule for the relevant file. If you’re targeting a usual or “patterned” file, just use make‘s … Read more
CPPFLAGS is supposed to be for flags for the C PreProcessor; CXXFLAGS is for flags for the C++ compiler. The default rules in make (on my machine, at any rate) pass CPPFLAGS to just about everything, CFLAGS is only passed when compiling and linking C, and CXXFLAGS is only passed when compiling and linking C++.
Under Bash (at least), this can be done automatically with tab completion: make spacetabtab
Your linker (ld) obviously doesn’t like the order in which make arranges the GCC arguments so you’ll have to change your Makefile a bit: CC=gcc CFLAGS=-Wall LDFLAGS=-lm .PHONY: all all: client .PHONY: clean clean: $(RM) *~ *.o client OBJECTS=client.o client: $(OBJECTS) $(CC) $(CFLAGS) $(OBJECTS) -o client $(LDFLAGS) In the line defining the client target change … Read more
Try the -i flag (or –ignore-errors). The documentation seems to suggest a more robust way to achieve this, by the way: To ignore errors in a command line, write a – at the beginning of the line’s text (after the initial tab). The – is discarded before the command is passed to the shell for … Read more
make clean removes any intermediate or output files from your source / build tree. However, it only affects the source / build tree; it does not touch the rest of the filesystem and so will not remove previously installed software. If you’re lucky, running make uninstall will work. It’s up to the library’s authors to … Read more