relpath

This patch adds an utility for computing relative path according to a given
base directory. This is useful for libraries that are to install .lpk in
order to be used with lazarus. As these libraries may be compiled without
need to build depend on Lazarus, we add it in fp-utils package which is likely
to be used by any big project which build depends on fp-compiler.

Gbp-Pq: Name relpath.patch

diff --git a/fpcsrc/utils/fpmake.pp b/fpcsrc/utils/fpmake.pp
index 0fef6a0f2b56de350ff2bdb02c75faef2a481a0b..bfd16f9caee921474c150ac3f592ba1e43714611 100644 (file)
--- a/fpcsrc/utils/fpmake.pp
+++ b/fpcsrc/utils/fpmake.pp
@@ -84,6 +84,7 @@ begin
     P.Targets.AddProgram('mkinsadd.pp');
     P.Targets.AddProgram('postw32.pp');
     P.Targets.AddProgram('rmcvsdir.pp');
+    P.Targets.AddProgram('relpath.pas');
     P.Targets.AddProgram('grab_vcsa.pp',[linux]);
     T:=P.Targets.AddProgram('fpcsubst.pp');
     T.Dependencies.AddUnit('usubst');

diff --git a/fpcsrc/utils/relpath.pas b/fpcsrc/utils/relpath.pas
new file mode 100644 (file)
index 0000000..bbf7c3c
--- /dev/null
+++ b/fpcsrc/utils/relpath.pas
@@ -0,0 +1,16 @@
+program relpath;
+uses
+  SysUtils;
+
+var
+       BaseDir: string;
+       TargetDir: string;
+begin
+       TargetDir := ParamStr(1);
+       BaseDir := ParamStr(2);
+       if BaseDir = ''
+       then begin
+               BaseDir := GetCurrentDir;
+       end;
+       WriteLn(ExtractRelativePath(IncludeTrailingPathDelimiter(BaseDir), TargetDir));
+end.

diff --git a/install/man/man1/relpath.1 b/install/man/man1/relpath.1
new file mode 100644 (file)
index 0000000..0c1c020
--- /dev/null
+++ b/install/man/man1/relpath.1
@@ -0,0 +1,32 @@
+.TH relpath 1 "7 May 2013" "Free Pascal" "Relative path computing tool"
+.SH NAME
+relpath \- The Free Pascal file deletion tool.
+
+.SH SYNOPSIS
+
+.B relpath
+[\fIfile or directory\fR] [\fIbase directory\fR]
+
+.SH DESCRIPTION
+
+.B relpath
+This is an utility for computing relative path according to a given base
+directory. This is useful for libraries that are to install .lpk in order to be
+used with lazarus. As these libraries may be compiled without need to build
+depend on Lazarus, we add it in fp-utils package which is likely to be used by
+any big project which build depends on fp-compiler.
+
+.SH USAGE
+
+.B relpath 
+takes the following arguments:
+.TP
+.B file or directory
+The target file or directory for which relative path should be computed.
+.TP
+.B base directory
+The base directory according to which the relative patch should be computed.
+
+.SH SEE ALSO
+.IP 
+.BR  readlink (1)