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cmake: check (and cache) check of required modules (#1920)

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This makes the CMake run much faster in general, and does not re-check
the dependencies every time again (since it gets cached).

There are several reports where the reference to the missing module was
not provided, and they all appear to have happened with CMake 3.6.1.

A missing "foobar" module gets reported there, but if you remove
/usr/lib/pkgconfig/libstartup-notification-1.0.pc, this does not get
reported:

    -- Checking for modules '…'
    --
    CMake Error at /tmp/cmake/share/cmake-3.6/Modules/FindPkgConfig.cmake:424 (message):
      A required package was not found

This apparently affects modules that have version requirements. After
removing that from "libstartup-notification-1.0>=0.10", it gets reported
also: "No package 'libstartup-notification-1.0' found".

The workaround is to require the package without version information
before the requirement with the version information.

This reverts https://github.com/awesomeWM/awesome/pull/1253.
This commit is contained in:
Daniel Hahler 2017-07-16 15:24:40 +02:00 committed by GitHub
parent 0f5c7b3270
commit 02ef4f3ce7
1 changed files with 7 additions and 12 deletions
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19
awesomeConfig.cmake
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@ -127,6 +127,7 @@ pkg_check_modules(AWESOME_COMMON_REQUIRED REQUIRED
xcb>=1.6)
set(AWESOME_DEPENDENCIES
glib-2.0
glib-2.0>=2.40
gdk-pixbuf-2.0
cairo
@ -136,8 +137,11 @@ set(AWESOME_DEPENDENCIES
xcb-xtest
xcb-xinerama
xcb-shape
xcb-util
xcb-util>=0.3.8
xcb-keysyms
xcb-keysyms>=0.3.4
xcb-icccm
xcb-icccm>=0.3.8
# NOTE: it's not clear what version is required, but 1.10 works at least.
# See https://github.com/awesomeWM/awesome/pull/149#issuecomment-94208356.
@ -145,23 +149,14 @@ set(AWESOME_DEPENDENCIES
xkbcommon
xkbcommon-x11
cairo-xcb
libstartup-notification-1.0
libstartup-notification-1.0>=0.10
xproto
xproto>=7.0.15
libxdg-basedir
libxdg-basedir>=1.0.0
xcb-xrm
)
# Check the deps one by one
foreach(dependency ${AWESOME_DEPENDENCIES})
unset(TMP_DEP_FOUND CACHE)
pkg_check_modules(TMP_DEP REQUIRED ${dependency})
if(NOT TMP_DEP_FOUND)
message(FATAL_ERROR)
endif()
endforeach()
# Do it again, but this time with the CFLAGS/LDFLAGS
pkg_check_modules(AWESOME_REQUIRED REQUIRED ${AWESOME_DEPENDENCIES})
macro(a_find_library variable library)