Still further rethinking of build changes for macOS Mojave.

To avoid the sorts of problems complained of by Jakob Egger, it'd be
best if configure didn't emit any references to the sysroot path at all.
In the case of PL/Tcl, we can do that just by keeping our hands off the
TCL_INCLUDE_SPEC string altogether.  In the case of PL/Perl, we need to
substitute -iwithsysroot for -I in the compile commands, which is easily
handled if we change to using a configure output variable that includes
the switch not only the directory name.  Since PL/Tcl and PL/Python
already do it like that, this seems like good consistency cleanup anyway.

Hence, this replaces the advice given to Perl-related extensions in commit
5e2217131; instead of writing "-I$(perl_archlibexp)/CORE", they should
just write "$(perl_includespec)".  (The old way continues to work, but not
on recent macOS.)

It's still the case that configure needs to be aware of the sysroot
path internally, but that's cleaner than what we had before.

As before, back-patch to all supported versions.

Discussion: https://postgr.es/m/20840.1537850987@sss.pgh.pa.us

diff --git a/configure b/configure
index 27a6d5fbab8b6cd3ca0005a8b5e6b779d6e97062..75007b05ab80c8f0254e153e7129af1f8f804014 100755 (executable)
--- a/configure
+++ b/configure
@@ -671,7 +671,7 @@ python_majorversion
 PYTHON
 perl_embed_ldflags
 perl_embed_ccflags
-perl_includedir
+perl_includespec
 perl_useshrplib
 perl_privlibexp
 perl_archlibexp
@@ -7626,11 +7626,12 @@ documentation for details.  Use --without-perl to disable building
 PL/Perl." "$LINENO" 5
   fi
   # On most platforms, archlibexp is also where the Perl include files live ...
-  perl_includedir="$perl_archlibexp"
-  # ... but on some macOS versions, we must look under $PG_SYSROOT instead
-  if test x"$PG_SYSROOT" != x"" ; then
+  perl_includespec="-I$perl_archlibexp/CORE"
+  # ... but on newer macOS versions, we must use -iwithsysroot to look
+  # under $PG_SYSROOT
+  if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
     if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
-      perl_includedir="$PG_SYSROOT$perl_archlibexp"
+      perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
     fi
   fi
 
@@ -15428,11 +15429,6 @@ eval TCL_SHARED_BUILD=\"$TCL_SHARED_BUILD\"
       as_fn_error $? "cannot build PL/Tcl because Tcl is not a shared library
 Use --without-tcl to disable building PL/Tcl." "$LINENO" 5
     fi
-    # Some macOS versions report an include spec that uses -iwithsysroot.
-    # We don't really want to use -isysroot, so translate that if we can.
-    if test x"$PG_SYSROOT" != x"" ; then
-        TCL_INCLUDE_SPEC="`echo "$TCL_INCLUDE_SPEC" | sed "s|-iwithsysroot */|-I $PG_SYSROOT/|"`"
-    fi
     # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
     ac_save_CPPFLAGS=$CPPFLAGS
     CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
@@ -15450,7 +15446,7 @@ fi
 # check for <perl.h>
 if test "$with_perl" = yes; then
   ac_save_CPPFLAGS=$CPPFLAGS
-  CPPFLAGS="$CPPFLAGS -I$perl_includedir/CORE"
+  CPPFLAGS="$CPPFLAGS $perl_includespec"
   ac_fn_c_check_header_compile "$LINENO" "perl.h" "ac_cv_header_perl_h" "#include <EXTERN.h>
 "
 if test "x$ac_cv_header_perl_h" = xyes; then :

diff --git a/configure.in b/configure.in
index 6e5bab17c0e2d66c456453ea6fd11f1e0a35106f..7004de09c9ff7768bbcb399f35e39695751c14a6 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -959,14 +959,15 @@ documentation for details.  Use --without-perl to disable building
 PL/Perl.])
   fi
   # On most platforms, archlibexp is also where the Perl include files live ...
-  perl_includedir="$perl_archlibexp"
-  # ... but on some macOS versions, we must look under $PG_SYSROOT instead
-  if test x"$PG_SYSROOT" != x"" ; then
+  perl_includespec="-I$perl_archlibexp/CORE"
+  # ... but on newer macOS versions, we must use -iwithsysroot to look
+  # under $PG_SYSROOT
+  if test \! -f "$perl_archlibexp/CORE/perl.h" ; then
     if test -f "$PG_SYSROOT$perl_archlibexp/CORE/perl.h" ; then
-      perl_includedir="$PG_SYSROOT$perl_archlibexp"
+      perl_includespec="-iwithsysroot $perl_archlibexp/CORE"
     fi
   fi
-  AC_SUBST(perl_includedir)dnl
+  AC_SUBST(perl_includespec)dnl
   PGAC_CHECK_PERL_EMBED_CCFLAGS
   PGAC_CHECK_PERL_EMBED_LDFLAGS
 fi
@@ -2060,11 +2061,6 @@ if test "$with_tcl" = yes; then
       AC_MSG_ERROR([cannot build PL/Tcl because Tcl is not a shared library
 Use --without-tcl to disable building PL/Tcl.])
     fi
-    # Some macOS versions report an include spec that uses -iwithsysroot.
-    # We don't really want to use -isysroot, so translate that if we can.
-    if test x"$PG_SYSROOT" != x"" ; then
-        TCL_INCLUDE_SPEC="`echo "$TCL_INCLUDE_SPEC" | sed "s|-iwithsysroot */|-I $PG_SYSROOT/|"`"
-    fi
     # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
     ac_save_CPPFLAGS=$CPPFLAGS
     CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
@@ -2075,7 +2071,7 @@ fi
 # check for <perl.h>
 if test "$with_perl" = yes; then
   ac_save_CPPFLAGS=$CPPFLAGS
-  CPPFLAGS="$CPPFLAGS -I$perl_includedir/CORE"
+  CPPFLAGS="$CPPFLAGS $perl_includespec"
   AC_CHECK_HEADER(perl.h, [], [AC_MSG_ERROR([header file <perl.h> is required for Perl])],
                   [#include <EXTERN.h>])
   # While we're at it, check that we can link to libperl.

diff --git a/contrib/hstore_plperl/Makefile b/contrib/hstore_plperl/Makefile
index d37e99b1f4436237a5c55a586b8da8d81e1af07c..32d7c320c60797d96886419a8f9140331653f3cb 100644 (file)
--- a/contrib/hstore_plperl/Makefile
+++ b/contrib/hstore_plperl/Makefile
@@ -41,8 +41,5 @@ SHLIB_LINK_INTERNAL += -L../hstore -l hstore
 SHLIB_LINK += $(perl_embed_ldflags)
 endif
 
-# As with plperl we need to make sure that the CORE directory is included
-# last, probably because it sometimes contains some header files with names
-# that clash with some of ours, or with some that we include, notably on
-# Windows.
-override CPPFLAGS := $(CPPFLAGS) $(perl_embed_ccflags) -I$(perl_includedir)/CORE
+# As with plperl we need to include the perl_includespec directory last.
+override CPPFLAGS := $(CPPFLAGS) $(perl_embed_ccflags) $(perl_includespec)

diff --git a/src/Makefile.global.in b/src/Makefile.global.in
index 5ceffca1648030f5ef27e5c2b0a074a48d9ff443..d52ae8c0578f0e97afd6219d74e6731dd0247acc 100644 (file)
--- a/src/Makefile.global.in
+++ b/src/Makefile.global.in
@@ -307,7 +307,7 @@ else
 endif
 perl_archlibexp        = @perl_archlibexp@
 perl_privlibexp        = @perl_privlibexp@
-perl_includedir        = @perl_includedir@
+perl_includespec   = @perl_includespec@
 perl_embed_ccflags = @perl_embed_ccflags@
 perl_embed_ldflags = @perl_embed_ldflags@
 

diff --git a/src/pl/plperl/GNUmakefile b/src/pl/plperl/GNUmakefile
index d1c84279a6aa497584ddaabbe6fac1dbf0029c9a..0846e60cd81f9414f5832c4fad0fa5eb9ea09085 100644 (file)
--- a/src/pl/plperl/GNUmakefile
+++ b/src/pl/plperl/GNUmakefile
@@ -12,12 +12,13 @@ override CPPFLAGS += -DPLPERL_HAVE_UID_GID
 override CPPFLAGS += -Wno-comment
 endif
 
-# Note: we need to make sure that the CORE directory is included last,
+# Note: we need to include the perl_includespec directory last,
 # probably because it sometimes contains some header files with names
 # that clash with some of ours, or with some that we include, notably on
 # Windows.
-override CPPFLAGS := -I. -I$(srcdir) $(CPPFLAGS) $(perl_embed_ccflags) -I$(perl_includedir)/CORE
+override CPPFLAGS := -I. -I$(srcdir) $(CPPFLAGS) $(perl_embed_ccflags) $(perl_includespec)
 
+# this is often, but not always, the same directory named by perl_includespec
 rpathdir = $(perl_archlibexp)/CORE
 
 PGFILEDESC = "PL/Perl - procedural language"

diff --git a/src/template/darwin b/src/template/darwin
index 702273356693bd9413ef6629e6b2485dc57b53c4..159d8bb12750f698bd48e6f0ae0a53f958aca3b9 100644 (file)
--- a/src/template/darwin
+++ b/src/template/darwin
@@ -3,9 +3,8 @@
 # Note: Darwin is the original code name for macOS, also known as OS X.
 # We still use "darwin" as the port name, partly because config.guess does.
 
-# Select where some include files should be sought.
-# We may eventually be forced to use "-isysroot" with this value,
-# but for now, it only affects Perl and Tcl include files.
+# Some configure tests require explicit knowledge of where the Xcode "sysroot"
+# is.  We try to avoid having this leak into configure's results, though.
 if test x"$PG_SYSROOT" = x"" ; then
   PG_SYSROOT=`xcodebuild -version -sdk macosx Path 2>/dev/null`
 fi