Tweak build for QIREE (downstream) #587
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This creates a version file so that you can specify a version for find_package(XACC), like find_package(XACC 1.0.0). For more info, see: https://cmake.org/cmake/help/latest/command/find_package.html#config-mode-version-selection
ausbin
commented
Jun 2, 2024
| @@ -20,11 +20,7 @@ if(NOT TARGET format) | |||
| endif() | |||
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| # Set version info | |||
| set(XACC_VERSION_MAJOR @MAJOR_VERSION@) | |||
| set(XACC_VERSION_MINOR @MINOR_VERSION@) | |||
| set(XACC_VERSION_PATCH @PATCH_VERSION@) | |||
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These are set by find_package() automatically. See the end of this section: https://cmake.org/cmake/help/latest/command/find_package.html#config-mode-version-selection
ausbin
commented
Jun 2, 2024
| # file without ${PACKAGE_FIND_VERSION} set, then if() will still get three | ||
| # operands. Without the quotes, if() will only get two operands in that case, | ||
| # throwing an error. | ||
| if(${PACKAGE_VERSION} VERSION_GREATER_EQUAL "${PACKAGE_FIND_VERSION}") |
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I'm not sure if this behavior is right. For reference, here is the LLVMConfigVersion.cmake on my system:
set(PACKAGE_VERSION "18.1.6")
# LLVM is API-compatible only with matching major.minor versions
# and patch versions not less than that requested.
if("18.1" VERSION_EQUAL
"${PACKAGE_FIND_VERSION_MAJOR}.${PACKAGE_FIND_VERSION_MINOR}"
AND NOT "6" VERSION_LESS "${PACKAGE_FIND_VERSION_PATCH}")
set(PACKAGE_VERSION_COMPATIBLE 1)
if("6" VERSION_EQUAL
"${PACKAGE_FIND_VERSION_PATCH}")
set(PACKAGE_VERSION_EXACT 1)
endif()
endif()Note that it's doing more careful logic there. If we release XACC 2.0 that breaks everything, then maybe this should not pass (it currently would say "ok, looks compatible to me")
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Closed in favor of ORNL-QCI#4 |
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I'm working on linking Qwerty with QIREE, but
QIREEConfig.cmakeattempts tofind_package(XACC 1.0.0), which is not valid unless there is axacc-config-version.cmake, which this PR adds. Yes we could tweak QIREE's configuration not to do that, but I think this is a valid usecase for software downstream of XACC.This PR also avoids installing gtest if tests are not being built. If ORNL folks point cmake to
$XACC_DIRto find gtest when building QIREE (I have no clue if so), then this is a breaking change. (However, I don't thinkmake installfor any software package should install the unit testing framework it uses, in my opinion. Imagine how many different versions of unit testing libraries you'd have in/usr/libif that were common practice.)