[MacPorts] #70522: postgis3 violates MacPorts compiler setting

[MacPorts]

#70522: postgis3 violates MacPorts compiler setting
---------------------------+--------------------
  Reporter:  barracuda156  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.10.0
Resolution:                |   Keywords:
      Port:  postgis3      |
---------------------------+--------------------

Comment (by ryandesign):

 Replying to [ticket:70522 barracuda156]:
 > We have the same issue which we had with `pdal`:

 Which issue was that?

 > `compiler.thread_local_storage yes` should ensure Xcode gcc is avoided,
 but it is not.

 > {{{
 > checking for gcc... ccache /opt/local/bin/gcc-mp-14
 > }}}

 `compiler.thread_local_storage yes` has successfully caused MacPorts to
 select the newer gcc14 compiler.

 > {{{
 > checking for xcrun... /usr/bin/xcrun
 > xcrun: error: unrecognized option: --show-sdk-version
 >
 > usage:
 > xcrun [-verbose] [-no-cache] [-sdk <sdkroot>] [-log] [-run] <utility>
 [argument ...]
 > xcrun [-verbose] [-no-cache] [-sdk <sdkroot>] -find <utility>
 > <tool> [tool arguments ...]
 > ./configure: line 15491: test: =: unary operator expected
 > }}}

 Here it wasn't expecting a version of `xcrun` as old as you have. Not sure
 what effect that will have on the build though I expect it only to affect
 SDK selection, not compiler selection.

 > {{{
 > checking whether we are using the GNU C++ compiler... yes
 > checking whether /usr/bin/gcc-4.2 -std=gnu99 accepts -g... yes
 > checking how to run the C++ preprocessor... /usr/bin/gcc-4.2 -std=gnu99
 -E
 > checking for ld used by /usr/bin/gcc-4.2 -std=gnu99... /opt/local/bin/ld
 > checking if the linker (/opt/local/bin/ld) is GNU ld... no
 > checking whether the /usr/bin/gcc-4.2 -std=gnu99 linker
 (/opt/local/bin/ld) supports shared libraries... yes
 > checking for /usr/bin/gcc-4.2 -std=gnu99 option to produce PIC... -fno-
 common -DPIC
 > checking if /usr/bin/gcc-4.2 -std=gnu99 PIC flag -fno-common -DPIC
 works... yes
 > checking if /usr/bin/gcc-4.2 -std=gnu99 static flag -static works... no
 > checking if /usr/bin/gcc-4.2 -std=gnu99 supports -c -o file.o... yes
 > checking if /usr/bin/gcc-4.2 -std=gnu99 supports -c -o file.o...
 (cached) yes
 > checking whether the /usr/bin/gcc-4.2 -std=gnu99 linker
 (/opt/local/bin/ld) supports shared libraries... yes
 > checking dynamic linker characteristics... darwin10.0.0d2 dyld
 > checking how to hardcode library paths into programs... immediate
 > checking whether /usr/bin/gcc-4.2 -std=gnu99 supports C++11 features
 with -std=c++11... no
 > checking whether /usr/bin/gcc-4.2 -std=gnu99 supports C++11 features
 with +std=c++11... no
 > checking whether /usr/bin/gcc-4.2 -std=gnu99 supports C++11 features
 with -h std=c++11... no
 > checking whether /usr/bin/gcc-4.2 -std=gnu99 supports C++11 features
 with -std=c++0x... no
 > checking whether /usr/bin/gcc-4.2 -std=gnu99 supports C++11 features
 with +std=c++0x... no
 > checking whether /usr/bin/gcc-4.2 -std=gnu99 supports C++11 features
 with -h std=c++0x... no
 > configure: error: *** A compiler with support for C++11 language
 features is required.
 > }}}

 Here something has gone wrong and it is not using the compiler MacPorts is
 telling it to use.

 > Also, C++11 must explicitly be set, otherwise needed flags are not
 added.

 According to #67476 it needs C++14.

-- 
Ticket URL: <https://trac.macports.org/ticket/70522#comment:1>
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