Build fails on current master with debug-store=database (regression from 1.75)

[thebrandre]

Operating System: Windows 1809
Compiler: Microsoft (R) C/C++ Optimizing Compiler Version 19.16.27045 for x64 (which is VS2017's compiler shipped with VS2019).

I compile boost as decribed here via:

call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Auxiliary\Build\vcvarsall.bat" x64 -vcvars_ver=14.16
.\bootstrap.bat 
.\b2 toolset=msvc-14.1 -j8 architecture=x86 runtime-link=shared variant=debug,release --without-mpi --without-python --without-graph_parallel --stagedir=stage64 debug-symbols=on debug-store=database cflags=/FS pch=off --hash address-model=64 stage

This works perfectly fine with the current release boost-1.75 but is broken on the current master which is this commit in boost.build.

I get lots of error messages like this one:

fatal error C1041: cannot open program database 'D:\lib\boost_f0b58842\bin.v2\libs\wave\build\faa0db243f6e360880aded34dd7ff9cb\libboost_wave-vc141-mt-x64-1_76.pdb'; if multiple CL.EXE write to the same .PDB file, please use /FS

It seems the cflags=/FS are no longer passed correctly to the compiler.

Avoiding debug-store=database still works ... but comes without PDBs

.\b2 toolset=msvc-14.1 -j8 architecture=x86 runtime-link=shared variant=debug,release --without-mpi --without-python --without-graph_parallel --stagedir=stage64 debug-symbols=on pch=off --hash address-model=64 stage

[grafikrobot]

This release fixed a long standing issue of incorrectly mixing cflags for c++ compiles vs just cxxflags. TO fix your compile pass in cxxflags=/FS instead.

[thebrandre]

Replacing cflags by cxxflags didn't help, unfortunately.

Using git bisect, I found out that the issue was introduced in this commit.

[thebrandre]

Update: on the current master, using both cflags=/FS cxxflags=/FS works; only one of them doesn't.

[stale]

Thank you for your contributions. Main development of B2 has moved to https://github.com/bfgroup/b2
This issue has been automatically marked as "transition" to indicate the potential for needing transition to the new B2 development project.