db48 fails to build undeq Sequoia

[murrayE]

During sudo port migrate from Sonoma to Sequoia 15.0, db48-4.8.30_5+universal.darwin_24.arm64-x86_64 failed to build.

From main.log:

:info:build libtool: compile:  /usr/bin/clang -c -I. -I../dist/.. -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -pipe -Os -arch arm64 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk ../dist/../txn/txn_util.c -o txn_util.o >/dev/null 2>&1
:info:build libtool: compile:  /usr/bin/clang -c -I. -I../dist/.. -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -pipe -Os -arch arm64 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk ../dist/../txn/txn_stat.c -o txn_stat.o >/dev/null 2>&1
:info:build In file included from ../dist/../cxx/cxx_db.cpp:13:
:info:build ./db_cxx.h:59:10: fatal error: 'iostream.h' file not found
:info:build    59 | #include <iostream.h>
:info:build       |          ^~~~~~~~~~~~
:info:build libtool: compile:  /usr/bin/clang++ -stdlib=libc++ -c -I. -I../dist/.. -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -pipe -Os -arch arm64 -stdlib=libc++ -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk ../dist/../cxx/cxx_dbt.cpp  -fno-common -DPIC -o .libs/cxx_dbt.o
:info:build In file included from ../dist/../cxx/cxx_dbc.cpp:13:
:info:build ./db_cxx.h:59:10: fatal error: 'iostream.h' file not found
:info:build    59 | #include <iostream.h>
:info:build       |          ^~~~~~~~~~~~
:info:build 1 error generated.
:info:build 1 error generated.
:info:build make: *** [cxx_dbc.lo] Error 1

[ryandesign (Ryan Carsten Schmidt)]

This is #70750. Please try the solution at ProblemHotlist#clts16.