[MacPorts] #58450: MacPorts installed cmake gives incoherent results

[MacPorts]

#58450: MacPorts installed cmake gives incoherent results
---------------------+-----------------------
  Reporter:  sandym  |      Owner:  michaelld
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  cmake   |
---------------------+-----------------------

Comment (by sandym):

 What is "cmake 1.1 PG" ? I'm trying to understand how you got
 {{{
 ICONV_HEADER = /opt/local/include
 ICONV_LIB = /opt/local/lib/libiconv.dylib
 }}}

 ?

 As for getting
 {{{
 ICONV_HEADER = /usr/include
 ICONV_LIB = /usr/lib/libiconv.dylib
 }}}

 you probably have an extra Xcode package installed as /usr/include does
 not exists on any of my machines nor is a default install by Xcode
 anymore. All headers are in Xcode SDKs folder. The library do exists in
 /usr of course.


 So it seems to come down to the value of CMAKE_SYSTEM_PREFIX_PATH. For
 cmake downloaded from cmake.org, I get:
 {{{
 CMAKE_SYSTEM_PREFIX_PATH =
         /usr/local
         /usr  <-- have the lib but not the header
         /
         /Applications/CMake.app/Contents <-- cmake install root, no header
         /usr/local
         /usr/X11R6
         /usr/pkg
         /opt
         /.../SDKs/MacOSX10.14.sdk/usr  <-- have the lib and header
         /sw
         /opt/local
 ICONV_HEADER = /.../SDKs/MacOSX10.14.sdk/usr/include
 ICONV_LIB = /usr/lib/libiconv.dylib
 }}}

 For macports' cmake:
 {{{
 CMAKE_SYSTEM_PREFIX_PATH =
         /usr/local
         /usr  <-- have the lib but not the header
         /
         /opt/local <-- cmake install root , have the lib and header
         /usr/local
         /usr/X11R6
         /usr/pkg
         /opt
         /.../SDKs/MacOSX10.14.sdk/usr  <-- have the lib and header
         /sw
         /opt/local
 ICONV_HEADER = /opt/local/include
 ICONV_LIB = /usr/lib/libiconv.dylib
 }}}

 Not sure there anything to do about this. It seems that even the cmake
 downloaded from cmake.org works by accident: what if I use a different SDK
 ? I still get the lib from /usr but a different header!

 For now, I can either install the package to get the header in
 /usr/include or manipulate CMAKE_SYSTEM_PREFIX_PATH.

 {{{
 list(REMOVE_ITEM CMAKE_SYSTEM_PREFIX_PATH /usr) # skip /usr, get from
 macports

 list(REMOVE_ITEM CMAKE_SYSTEM_PREFIX_PATH /opt/local) # or skip MacPorts
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/58450#comment:9>
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