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Simplify and clarify example

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
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Joachim Nilsson 2017-12-27 14:01:54 +01:00
parent 791508a3a1
commit 5be965deec
1 changed files with 25 additions and 13 deletions
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@ -70,39 +70,51 @@ availble in the source tree.
} }
``` ```
3. Compile the example, either by hard-coding the paths to the include 3. Compile the example:
file and the library:
cd ~/src/ cd ~/src/
make LDLIBS=-leditline example make LDLIBS=-leditline example
In this example I use `make` and rely on its implicit (built-in) rules Here I use `make` and rely on its implicit (built-in) rules to handle
to handle all the magic with `gcc`, but you may want to create your own all the compiler magic, but you may want to create your own Makefile for
Makefile for the project. In particular if you don't change the default the project. In particular if you don't change the default prefix
prefix (above), because then you need to specify the search path for the (above), because then you need to specify the search path for the
include file(s) and the library manually. A simple `~/src/Makefile`: include file(s) and the library manually.
A simple `~/src/Makefile` could look like this:
CFLAGS = -I/usr/local/include CFLAGS = -I/usr/local/include
LDFLAGS = -L/usr/local/lib LDFLAGS = -L/usr/local/lib
LDLIBS = -leditline LDLIBS = -leditline
EXEC = example
OBJS = example.o
all: example all: $(EXEC)
$(EXEC): $(OBJS)
clean:
$(RM) $(OBJS) $(EXEC)
distclean: clean
$(RM) *.o *~ *.bak
Then simply type `make` from your `~/src/` directory. You can also use Then simply type `make` from your `~/src/` directory. You can also use
`pkg-config` for your `~/src/Makefile`: `pkg-config` for your `~/src/Makefile`, replace the following lines:
CFLAGS = $(shell pkg-config --cflags libeditline) CFLAGS = $(shell pkg-config --cflags libeditline)
LDFLAGS = $(shell pkg-config --libs-only-L libeditline) LDFLAGS = $(shell pkg-config --libs-only-L libeditline)
LDLIBS = $(shell pkg-config --libs-only-l libeditline) LDLIBS = $(shell pkg-config --libs-only-l libeditline)
all: example Then simply type <kbd>make</kbd>, like above.
Then simply type <kbd>make</kbd>, like above. However, in most `.rpm` However, most `.rpm` based distributions `pkg-config` doesn't search in
based distributions `pkg-config` doesn't search in `/usr/local` anymore, `/usr/local` anymore, so you need to call make like this:
so you need to call make like this:
PKG_CONFIG_LIBDIR=/usr/local/lib/pkgconfig make PKG_CONFIG_LIBDIR=/usr/local/lib/pkgconfig make
Debian/Ubuntu based systems do not have this problem.
API API
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