From 35cd66cb552b87fdb0e71d9188f9bc8a57c55a62 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Sun, 9 Feb 2020 23:29:17 +0100
Subject: [PATCH] Improve documentation for macOS when building Matio and/or
 ProtocolBuffers from source

---
 CMakeLists.txt | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 09a305a09..fe1b4c147 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1737,6 +1737,29 @@ if(NOT MATIO_FOUND OR MATIO_VERSION_STRING VERSION_LESS ${GNSSSDR_MATIO_MIN_VERS
                 message(FATAL_ERROR "aclocal is required to build matio from source")
             endif()
         endif()
+        if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+            if((NOT EXISTS /usr/local/bin/glibtoolize AND NOT EXISTS /opt/local/bin/glibtoolize) OR
+                (NOT EXISTS /usr/local/bin/aclocal AND NOT EXISTS /opt/local/bin/aclocal))
+                message(" libtool/automake tools have not been found.")
+                message(" You can try to install them by typing:")
+                message(" 'sudo port install libtool automake', if you use Macports, or 'brew install libtool automake', if you use Homebrew")
+                message(FATAL_ERROR "libtool/automake tools are required to build matio from source")
+            endif()
+            if(CMAKE_GENERATOR STREQUAL Xcode)
+                if(EXISTS /opt/local/bin/glibtoolize OR EXISTS /opt/local/bin/aclocal)
+                    if(NOT EXISTS /usr/local/bin/glibtoolize OR NOT EXISTS /usr/local/bin/aclocal)
+                        message(" WARNING: libtool/atomake binaries cannot be found by Xcode. Please do:")
+                        message("sudo ln -s /opt/local/bin/glibtoolize /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/aclocal /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/autom4te /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/automake /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/autoconf /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/autoreconf /usr/local/bin/")  # not needed by Matio, but by Protocol Buffers
+                        message(FATAL_ERROR "libtool/automake tools cannot be found by Xcode")
+                    endif()
+                endif()
+            endif()
+        endif()
         find_package(HDF5)
         set_package_properties(HDF5 PROPERTIES
             URL "https://support.hdfgroup.org/HDF5/"
@@ -2083,6 +2106,29 @@ if((NOT Protobuf_FOUND) OR (NOT Protobuf_PROTOC_EXECUTABLE) OR (${Protobuf_VERSI
                 message(FATAL_ERROR "aclocal is required to build Protocol Buffers from source")
             endif()
         endif()
+        if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+            if((NOT EXISTS /usr/local/bin/glibtoolize AND NOT EXISTS /opt/local/bin/glibtoolize) OR
+                (NOT EXISTS /usr/local/bin/aclocal AND NOT EXISTS /opt/local/bin/aclocal))
+                message(" libtool/automake tools have not been found.")
+                message(" You can try to install them by typing:")
+                message(" 'sudo port install libtool automake', if you use Macports, or 'brew install libtool automake', if you use Homebrew")
+                message(FATAL_ERROR "libtool/automake tools are required to build Protocol Buffers from source")
+            endif()
+            if(CMAKE_GENERATOR STREQUAL Xcode)
+                if(EXISTS /opt/local/bin/glibtoolize OR EXISTS /opt/local/bin/aclocal)
+                    if(NOT EXISTS /usr/local/bin/glibtoolize OR NOT EXISTS /usr/local/bin/aclocal)
+                        message(" WARNING: libtool/automake binaries cannot be found by Xcode. Please do:")
+                        message("sudo ln -s /opt/local/bin/glibtoolize /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/aclocal /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/autom4te /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/automake /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/autoconf /usr/local/bin/")
+                        message("sudo ln -s /opt/local/bin/autoreconf /usr/local/bin/")
+                        message(FATAL_ERROR "libtool/automake tools cannot be found by Xcode")
+                    endif()
+                endif()
+            endif()
+        endif()
 
         set(PROTOBUF_MAKE_PROGRAM ${CMAKE_MAKE_PROGRAM})
         if(PROTOBUF_MAKE_PROGRAM MATCHES "ninja" OR CMAKE_GENERATOR STREQUAL Xcode)