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Date: Sat, 13 Jul 2019 21:27:41 -0700 (PDT)
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Subject: GNAT CE 2019 C++ Link Failure With Mojave
From: Roger <rogermcm2@gmail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:56868
Date: 2019-07-13T21:27:41-07:00
List-Id: <comp.lang.ada>

Mac-Mini 2018
OSX 10.14.5 Mojave
GPRBUILD Community 2019 (20190517) (x86_64-apple-darwin17.7.0)
ImageMagick-7.0.8-35

The C++ code below fails to link on my Mac-Mini under Mojave:

#include <Magick++.h>
#include <iostream>
#include <string>

using namespace std;
using namespace Magick;

int main(int argc, char **argv)
  {
  string  Logo_File = "../images/logo.jpg";
  Image   logo_image;

  Magick::InitializeMagick(*argv);
  logo_image.read(Logo_File);
  return 0;
}

Failure message:
Undefined symbols for architecture x86_64:
  "Magick::Image::read(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)", referenced from:
      _main in display_logo.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
gprbuild: link of display_logo.cpp failed
gprbuild: failed command was: /opt/gnat/2019/bin/g++ display_logo.o libshow_logo.a -L/opt/lib -lMagickCore-7.Q16HDRI -lMagick++-7.Q16HDRI -g -Wl,-rpath,/opt/lib -o /Ada_Source/OglAda_Examples/imagemagick/logo//display_logo

This code works with GNAT CE 2019 on my MacBook under High Sierra.
It also works using XCode on my Mac-Mini.
Failure occurs for both brew imagemagick and locally built imagemegick.

I use Magick::Image::read and related imagemagick routines in C++ interface code for a number of Ada projects which all build without error on my MacBook under High Sierra.

Any assistance will be greatly appreciated.
Thanks,
Roger