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 0bd4651e96c94a41ef292cb12fdfd7beb404bbc6..08d36e0f79954a5a2ed59eee2b895eef054f1cdd 100644 (file)
--- a/fpcsrc/utils/fpmake.pp
+++ b/fpcsrc/utils/fpmake.pp
@@ -89,6 +89,7 @@ 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)