Dependencies should be built before any files of the target (?)

[elmarco]

Describe the bug

lib = static_library('dep', 'test.c')

dep = declare_dependency(link_with: lib)

executable('a', 'main.c', dependencies: dep)

generates ninja rules:

build a.p/main.c.o: c_COMPILER ../main.c
 DEPFILE = a.p/main.c.o.d
 DEPFILE_UNQUOTED = a.p/main.c.o.d
 ARGS = -Ia.p -I. -I.. -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -O0 -g

build a: c_LINKER a.p/main.c.o | libdep.a
 LINK_ARGS = -Wl,--as-needed -Wl,--no-undefined -Wl,--start-group libdep.a -Wl,--end-group

It fails when lib is actually from generated source (via custom_target), and main.c depend on it (generated headers).

meson 1.3.99 git 6fcf863

[eli-schwartz]

It fails when lib is actually from generated source (via custom_target), and main.c depend on it (generated headers).

In that case, the bug report is incomplete and needs to describe the bug well enough to actually model generating the sources and headers.

[elmarco]

It fails when lib is actually from generated source (via custom_target), and main.c depend on it (generated headers).

In that case, the bug report is incomplete and needs to describe the bug well enough to actually model generating the sources and headers.

project('foo', ['c'])

src = custom_target('gen', output: ['test.c', 'test.h'], command: ['touch', '@OUTPUT@'])

lib = static_library('dep', src)

dep = declare_dependency(link_with: lib)

executable('a', 'main.c', dependencies: dep)

#include "test.h"

int test() { return 0; }

[eli-schwartz]

https://mesonbuild.com/FAQ.html#how-do-i-tell-meson-that-my-sources-use-generated-headers

[elmarco]

thanks @eli-schwartz