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VPATH buils fail with v3.5

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
c
Domain
build-system

Research direction

Reproduce the out-of-tree build from a separate mybuild directory using ../configure followed by make. Start with arch/arch.h and the configure-generated build include paths, checking why arch/arch_x86_64.h is not found without CPATH. Done means the documented VPATH build succeeds without the CPATH workaround.

Written by the indexing model from the issue text.

Description

Building mpiP in-tree works fine. But out-of-tree / VPATH builds fail.

To reproduce:

$> # extract tarball and cd into mpiP directory
$> mkdir mybuild
$> cd mybuild
$> ../configure 
$> make
../arch/arch.h:17:10: fatal error: arch/arch_x86_64.h: No such file or directory

It looks like the include path does not contain $(srcdir).

In fact, calling make as

$> make CPATH=$CPATH:../

serves as a workaround.

Dominant language
C
Stars
112
Forks
35
No merged PRs in 30d

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