C Unable to find the ncurses package.

B

balanga

I get the following error when trying to compile a Linux progam:

* Unable to find the ncurses package.
* Install ncurses (ncurses-devel or libncurses-dev
* depending on your distribution).
*
* You may also need to install pkg-config to find the
* ncurses installed in a non-default location.
Click to expand...

Code: 
# Check the default paths in case pkg-config is not installed.
# (Even if it is installed, some distributions such as openSUSE cannot
# find ncurses by pkg-config.)
if [ -f /usr/include/ncursesw/ncurses.h ]; then
        echo cflags=\"-D_GNU_SOURCE -I/usr/include/ncursesw\"
        echo libs=\"-lncursesw -lmenuw -lpanelw\"
        exit 0
fi

if [ -f /usr/include/ncurses/ncurses.h ]; then
        echo cflags=\"-D_GNU_SOURCE -I/usr/include/ncurses\"
        echo libs=\"-lncurses -lmenu -lpanel\"
        exit 0
fi

if [ -f /usr/include/ncurses.h ]; then
        echo cflags=\"-D_GNU_SOURCE\"
        echo libs=\"-lncurses -lmenu -lpanel\"
        exit 0
fi

echo >&2 "*"
echo >&2 "* Unable to find the ncurses package."
echo >&2 "* Install ncurses (ncurses-devel or libncurses-dev"
echo >&2 "* depending on your distribution)."
echo >&2 "*"
echo >&2 "* You may also need to install pkg-config to find the"
echo >&2 "* ncurses installed in a non-default location."
echo >&2 "*"
exit 1

What do I need to change so that ncurses.h can be located?
 
You could try installing the devel/ncurses package. I'm lucky. I have two versions. Don't know why:
Code: 
[strand.166] $ freebsd-version
13.2-RELEASE-p2
[strand.167] $ pkg info | grep ncurses
ncurses-6.4                    Library for terminal-independent, full-screen output
[strand.168] $ pkg search ncurses
braincurses-1.1.0_5            Clone of the Mastermind game
fpc-ncurses-3.2.2_4            Free Pascal interface to the ncurses library
ncurses-6.4                    Library for terminal-independent, full-screen output
[strand.169] $ find /usr -mount -name '*ncurses.h*' 2>/dev/null
/usr/local/include/ncurses/ncurses.h
/usr/include/ncurses.h
[strand.170] $ ls -la /usr/local/include/ncurses/ncurses.h /usr/include/ncurses.h
lrwxr-xr-x  1 root  wheel  8 Apr  9  2021 /usr/include/ncurses.h -> curses.h
lrwxr-xr-x  1 root  wheel  8 Apr 25 11:25 /usr/local/include/ncurses/ncurses.h -> curses.h
[strand.171] $ ls -la /usr/local/include/ncurses/curses.h /usr/include/curses.h
-r--r--r--  1 root  wheel  100266 Apr  9  2021 /usr/include/curses.h
-rw-r--r--  1 root  wheel  100242 Apr 25 11:25 /usr/local/include/ncurses/curses.h
[strand.172] $ diff /usr/local/include/ncurses/ncurses.h /usr/include/ncurses.h | head -8
2c2
<  * Copyright 2018-2020,2021 Thomas E. Dickey                                *
---
>  * Copyright 2018-2019,2020 Thomas E. Dickey                                *
36c36
< /* $Id: curses.h.in,v 1.277 2021/09/24 16:07:37 tom Exp $ */
---
> /* $Id: curses.h.in,v 1.266 2020/02/08 10:51:53 tom Exp $ */
 
It looks like I already have the latest version installed.

I suspect Linux is looking in the wrong place so probably need to change the search path.

I have an ncurses.h in /usr/include/ and /usr/local/include/, so not sure why they are not being found.
 
I've never heard of this pkg but have just installed, although don't know if it needs any configuration, since I get the same result after installing it.
 
FreeBSD comes with ncursesw in the base.

The header file is located at /usr/include/ncurses.h, while this script from Linux expects it either at /usr/include/ncursesw/ncurses.h or at /usr/include/ncurses/ncurses.h.

I suggest to add the directory ncursesw to /usr/include and then put symbolic links of the ncurses headers into it.

# mkdir -p /usr/include/ncursesw
# cd /usr/include/ncursesw
# ln -s ../ncurses*.h ./
# ls -l
Code: 
total 0
lrwxr-xr-x  1 root  wheel  16 Aug 28 12:31 ncurses_dll.h -> ../ncurses_dll.h
lrwxr-xr-x  1 root  wheel  12 Aug 28 12:31 ncurses.h -> ../ncurses.h

Then try again.
 
cyclaero said:
FreeBSD comes with ncursesw in the base.

The header file is located at /usr/include/ncurses.h, while this script from Linux expects it either at /usr/include/ncursesw/ncurses.h or at /usr/include/ncurses/ncurses.h.

I suggest to add the directory ncursesw to /usr/include and then put symbolic links of the ncurses headers into it.

# mkdir -p /usr/include/ncursesw
# cd /usr/include/ncursesw
# ln -s ../ncurses*.h ./
# ls -l
Code: 
total 0
lrwxr-xr-x  1 root  wheel  16 Aug 28 12:31 ncurses_dll.h -> ../ncurses_dll.h
lrwxr-xr-x  1 root  wheel  12 Aug 28 12:31 ncurses.h -> ../ncurses.h

Then try again.
Click to expand...
Brilliant! That works great.

Just wondering how the original should be amended to locate FreeBSD's ncurses instead of changing FreeBSD to suit.
 
balanga said:
Brilliant! That works great.

Just wondering how the original should be amended to locate FreeBSD's ncurses instead of changing FreeBSD to suit.
Click to expand...
You could try:
sed -e "s|/usr/include/ncursesw|/usr/include|" -i "" /path/to/that/linux_build_script.sh

If you are lucky, the -D_GNU_SOURCE compile time flag takes then care of all the rest, in case it does not, you're on your own.
 
Phishfry said:
Nothing. Are you compiling it correctly?
Click to expand...
I don't think that link is uptodate since gcc no longer is included in base FreeBSD, AFAIK.

I'm not sure why one of the tests above:-
Code: 
if [ -f /usr/include/ncurses.h ]; then
        echo cflags=\"-D_GNU_SOURCE\"
        echo libs=\"-lncurses -lmenu -lpanel\"
        exit 0
fi
fails, but with the changes suggested by cyclaero, I'm able to create the OpenWrt configuration menu similar to

1693262722014.png
 
Tada
I did the NCurses book around 2018.

cc -v -o box box.c -lncurses
Code: 
#include <ncurses.h>

int main(void)
{
    initscr();

    box(stdscr,0,0);
    mvaddstr(4,8,"Ta-da!");
    refresh();
    getch();

    endwin();
    return 0;
}
 
Because it was old work I had to recompile it.

/Backups/ncurses/16 # ./box
ld-elf.so.1: Shared object "libncurses.so.8" not found, required by "box"
 
cyclaero said:
FreeBSD comes with ncursesw in the base.

The header file is located at /usr/include/ncurses.h, while this script from Linux expects it either at /usr/include/ncursesw/ncurses.h or at /usr/include/ncurses/ncurses.h.
Click to expand...

The code above also has:-

C: 
if [ -f /usr/include/ncurses.h ]; then
        echo cflags=\"-D_GNU_SOURCE\"
        echo libs=\"-lncurses -lmenu -lpanel\"
        exit 0
fi

I don't understand why this fails since ncurses.h exists in the required location:


Code: 
root@X1:/ # ls -al /usr/include/ncurses.h                                                                                                                                     
ls -al /usr/include/ncurses.h                                                                                                                                                 
lrwxr-xr-x  1 root  wheel  8 Dec  7  2018 /usr/include/ncurses.h -> curses.h
 
Can anyone explain what is going on here:-?

Bash: 
PKG="ncursesw menuw panelw"
PKG2="ncurses menu panel"

if [ -n "$(command -v pkg-config)" ]; then
        if pkg-config --exists $PKG; then
                echo cflags=\"$(pkg-config --cflags $PKG)\"
                echo libs=\"$(pkg-config --libs $PKG)\"
                exit 0
        fi

        if pkg-config --exists $PKG2; then
                echo cflags=\"$(pkg-config --cflags $PKG2)\"
                echo libs=\"$(pkg-config --libs $PKG2)\"
                exit 0
        fi
fi

Do I need to run pkg-config=ncurses to invoke FreeBSD's curses?
 
Here's my latest attempt to create an OpenWrt Build System using FreeBSD.

I'd appreciate any feedback.

See https://openwrt.org/docs/guide-developer/toolchain/install-buildsystem

Bash: 
#########
#########
#########
#########     Changes required
#########     
#########     include inline patches
#########
#########     check if packages have been installed   
#########
#########
#########


pkg bootstrap -y

#  Install required pkgs

cat <<EOF | xargs pkg install -y
git
rsync
bash
gmake
gtar
gcc
gawk
ncurses
findutils
diffutils
patch
wget
getopt
coreutils
pkgconf
EOF

# Install OpenWrt Build System

mkdir /OpenWrt-BuildSystem
cd /OpenWrt-BuildSystem
git clone https://github.com/openwrt/openwrt.git
cd openwrt

# patch prereq-build.mk

patch  <<EOF
--- include/prereq-build.mk    2023-08-26 09:03:31.437266000 +0100
+++ -
@@ -149,6 +149,7 @@
     Please install an extended getopt version that supports --long, \\
     gnugetopt -o t --long test -- --test | grep '^ *--test *--', \\
     getopt -o t --long test -- --test | grep '^ *--test *--', \\
+    /usr/local/bin/getopt -o t --long test -- --test | grep '^ *--test *--', \\
     /usr/local/opt/gnu-getopt/bin/getopt -o t --long test -- --test | grep '^ *--test *--', \\
     /opt/local/bin/getopt -o t --long test -- --test | grep '^ *--test *--'))
EOF


#exit
pkg-config=ncurses

    # Let's go!!!

./scripts/feeds update -a
./scripts/feeds install -a


# mkdir -p /usr/include/ncursesw
# cd /usr/include/ncursesw
# ln -s ../ncurses*.h ./


make  menuconfig
 
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