From dee4c4fc898d1cc2ee496fca6944684ac5fc967c Mon Sep 17 00:00:00 2001
From: Pascal Packaging Team <pkg-pascal-devel@lists.alioth.debian.org>
Date: Thu, 30 Mar 2023 20:31:30 +0100
Subject: [PATCH] fix-FPCDIR-in-fpcmake

This patch fixes evaluation of default value for FPCDIR. (Closes: bug#662814)

This patch fixes evaluation of default value for FPCDIR. (Closes: bug#662814)


Gbp-Pq: Name fix-FPCDIR-in-fpcmake.diff
---
 fpcsrc/utils/fpcm/fpcmmain.pp | 58 +++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 2 deletions(-)

diff --git a/fpcsrc/utils/fpcm/fpcmmain.pp b/fpcsrc/utils/fpcm/fpcmmain.pp
index 5517a32f..d9542e2c 100644
--- a/fpcsrc/utils/fpcm/fpcmmain.pp
+++ b/fpcsrc/utils/fpcm/fpcmmain.pp
@@ -321,6 +321,46 @@ implementation
       end;
 
 
+{$ifdef UNIX}
+{$ifndef NO_UNIX_UNIT}
+      function ReadLink(LinkName: ansistring; Depth: byte = 0): ansistring;
+      {
+        Read a link (where it points to)
+        @Param LinkName
+        @Param Depth
+          0 means raw link value (could be relative path)
+        1 means expanded full path and name to liked file
+        2..255 follow links recursively up to Depth level
+      }
+      var
+        LinkedFileName: PChar;
+        i: cInt;
+      begin
+        GetMem(LinkedFileName, PATH_MAX + 1);
+        Result := ExpandFileName(LinkName);
+        repeat
+          i := fpReadLink(PChar(Result), LinkedFileName, PATH_MAX);
+          if i >= 0 then begin
+            LinkedFileName[i] := #0;
+            if Depth > 0 then begin
+              Result := ExpandFileName(FileSearch(LinkedFileName, PathSep + ExtractFileDir(Result)));
+              Dec(Depth);
+            end else begin
+              Result := LinkedFileName;
+            end;
+          end;
+        until (i <= 0) or (Depth <= 0);
+        if i < 0 then begin
+          if FpGetErrNo <> ESysEINVAL then begin
+            Result := '';
+          end;
+        end;
+        FreeMem(LinkedFileName, PATH_MAX + 1);
+      end;
+{$endif UNIX}
+{$endif NO_UNIX_UNIT}
+
+
     function posidx(const substr,s : string;idx:integer):integer;
       var
         i,j : integer;
@@ -1224,7 +1264,7 @@ implementation
            end;
            if FileExists('/usr/local/bin/ppc' + ppcSuffix[cpu]) then
             begin
-              s:=ExtractFilePath({$ifdef ver1_0}ReadLink{$else}fpReadlink{$endif}('/usr/local/bin/ppc' + ppcSuffix[cpu]));
+              s:=ExtractFilePath(ReadLink('/usr/local/bin/ppc' + ppcSuffix[cpu], 255));
               if s<>'' then
                begin
                  if s[length(s)]='/' then
@@ -1236,7 +1276,21 @@ implementation
             begin
               if FileExists('/usr/bin/ppc' + ppcSuffix[cpu]) then
                begin
-                 s:=ExtractFilePath({$ifdef ver1_0}ReadLink{$else}fpReadLink{$endif}('/usr/bin/ppc' + ppcSuffix[cpu]));
+                 s:=ExtractFilePath(ReadLink('/usr/bin/ppc' + ppcSuffix[cpu], 255));
+                 if s<>'' then
+                  begin
+                    if s[length(s)]='/' then
+                     delete(s,length(s),1);
+                    hs:=SubstVariables('$(wildcard $(addprefix '+s+'/,Makefile.fpc))');
+                  end;
+               end;
+            end;
+           if hs='' then
+            begin
+              s:=ExtractFileName(s);
+              if DirectoryExists('/usr/share/fpcsrc/' + s) then
+               begin
+                 s:=ReadLink('/usr/share/fpcsrc/' + s, 255);
                  if s<>'' then
                   begin
                     if s[length(s)]='/' then
-- 
2.30.2