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FindPostgreSQL: extract the actual version number

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The `PG_VERSION` variable can be mangled by distributions to indicate
things like the name of the distro and package build numbers.

However, `PG_VERSION_NUM` is new in 8.2 (2006), so keep the old
extraction code around for old versions.
This commit is contained in:
Ben Boeckel
2018-11-01 14:45:25 -04:00
parent 7413f29fe6
commit 575e2cc35d
1 changed files with 23 additions and 3 deletions
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Modules/FindPostgreSQL.cmake
+23 -3
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@@ -175,14 +175,34 @@ if (PostgreSQL_INCLUDE_DIR)
foreach(_PG_CONFIG_HEADER ${_PG_CONFIG_HEADERS})
if(EXISTS "${_PG_CONFIG_HEADER}")
file(STRINGS "${_PG_CONFIG_HEADER}" pgsql_version_str
REGEX "^#define[\t ]+PG_VERSION[\t ]+\".*\"")
REGEX "^#define[\t ]+PG_VERSION_NUM[\t ]+.*")
if(pgsql_version_str)
string(REGEX REPLACE "^#define[\t ]+PG_VERSION[\t ]+\"([^\"]*)\".*"
"\\1" PostgreSQL_VERSION_STRING "${pgsql_version_str}")
string(REGEX REPLACE "^#define[\t ]+PG_VERSION_NUM[\t ]+([0-9]*).*"
"\\1" _PostgreSQL_VERSION_NUM "${pgsql_version_str}")
break()
endif()
endif()
endforeach()
if (_PostgreSQL_VERSION_NUM)
math(EXPR _PostgreSQL_major_version "${_PostgreSQL_VERSION_NUM} / 10000")
math(EXPR _PostgreSQL_minor_version "${_PostgreSQL_VERSION_NUM} % 10000")
set(PostgreSQL_VERSION_STRING "${_PostgreSQL_major_version}.${_PostgreSQL_minor_version}")
unset(_PostgreSQL_major_version)
unset(_PostgreSQL_minor_version)
else ()
foreach(_PG_CONFIG_HEADER ${_PG_CONFIG_HEADERS})
if(EXISTS "${_PG_CONFIG_HEADER}")
file(STRINGS "${_PG_CONFIG_HEADER}" pgsql_version_str
REGEX "^#define[\t ]+PG_VERSION[\t ]+\".*\"")
if(pgsql_version_str)
string(REGEX REPLACE "^#define[\t ]+PG_VERSION[\t ]+\"([^\"]*)\".*"
"\\1" PostgreSQL_VERSION_STRING "${pgsql_version_str}")
break()
endif()
endif()
endforeach()
endif ()
unset(_PostgreSQL_VERSION_NUM)
unset(pgsql_version_str)
endif()