[macOS] add dynamic library path from command line

Author: perazz

src/fpm.f90

@@ -604,6 +604,12 @@ subroutine cmd_run(settings,test)
                 if (settings%runner/=' ')     run_cmd = settings%runner_command()//' '//run_cmd
                 if (allocated(settings%args)) run_cmd = run_cmd//" "//settings%args
 
+                ! System Integrity Protection will not propagate the .dylib environment variables
+                ! to the child process: add paths manually
+                if (get_os_type()==OS_MACOS)  run_cmd = "env DYLD_LIBRARY_PATH=" // &
+                                                         get_env("DYLD_LIBRARY_PATH","") // &
+                                                         " " // run_cmd
+
                 call run(run_cmd,echo=settings%verbose,exitstat=stat(i))                
 
             else

src/fpm_compiler.F90

@@ -1126,6 +1126,7 @@ function get_install_name_flags(self, target_dir, target_name) result(flags)
     class(compiler_t), intent(in) :: self
     character(len=*), intent(in) :: target_dir, target_name
     character(len=:), allocatable :: flags
+    character(len=:), allocatable :: library_file
 
     if (get_os_type() /= OS_MACOS) then
         flags = ""
@@ -1134,10 +1135,12 @@ function get_install_name_flags(self, target_dir, target_name) result(flags)
 
     ! Shared library basename (e.g., libfoo.dylib)
     if (str_ends_with(target_name, ".dylib")) then
-        flags = " -Wl,-install_name,@rpath/" // target_name
+        library_file = target_name        
     else
-        flags = " -Wl,-install_name,@rpath/" // target_name // ".dylib"
+        library_file = library_filename(target_name,.true.,.false.,OS_MACOS)
     end if
+    
+    flags = " -Wl,-install_name,@rpath/" // library_file
 
 end function get_install_name_flags