cmake: Enable building of the oci plugin

Change-Id: I003d6da10c7e47402fb373d3956817817328cf0f
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Qt CMake Build Bot

cmake/FindOracle.cmake

@@ -0,0 +1,48 @@
+#.rst:
+# FindOracle
+# ---------
+#
+# Try to locate the oracle client library.
+# If found, this will define the following variables:
+#
+# ``Oracle_FOUND``
+#     True if the oracle library is available
+# ``Oracle_INCLUDE_DIRS``
+#     The oracle include directories
+# ``Oracle_LIBRARIES``
+#     The oracle libraries for linking
+#
+# If ``Oracle_FOUND`` is TRUE, it will also define the following
+# imported target:
+#
+# ``Oracle::Oracle``
+#     The oracle instant client library
+
+find_path(Oracle_INCLUDE_DIRS
+  NAMES oci.h
+  HINTS ${Oracle_INCLUDE_DIR})
+
+set(ORACLE_OCI_NAMES clntsh ociei oraociei12)
+
+find_library(Oracle_LIBRARIES
+  NAMES NAMES ${ORACLE_OCI_NAMES}
+  HINTS ${Oracle_LIBRARY_DIR})
+
+if (NOT Oracle_INCLUDE_DIRS STREQUAL "Oracle_INCLUDE_DIRS-NOTFOUND" AND NOT Oracle_LIBRARIES STREQUAL "Oracle_LIBRARIES-NOTFOUND")
+  set(Oracle_FOUND ON)
+endif()
+
+if(Oracle_FOUND AND NOT TARGET Oracle::OCI)
+  add_library(Oracle::OCI UNKNOWN IMPORTED)
+  set_target_properties(Oracle::OCI PROPERTIES
+                        IMPORTED_LOCATION "${Oracle_LIBRARIES}"
+                        INTERFACE_INCLUDE_DIRECTORIES "${Oracle_INCLUDE_DIRS}")
+endif()
+
+mark_as_advanced(Oracle_INCLUDE_DIRS Oracle_LIBRARIES)
+
+include(FeatureSummary)
+set_package_properties(Oracle PROPERTIES
+  URL "https://www.oracle.com"
+  DESCRIPTION "Oracle client library")
+

src/plugins/sqldrivers/CMakeLists.txt

@@ -31,7 +31,7 @@ if(QT_FEATURE_sql_tds)
 endif()
 
 if(QT_FEATURE_sql_oci)
-#     TODO add_subdirectory(oci)
+    add_subdirectory(oci)
 endif()
 
 if(QT_FEATURE_sql_db2)

src/plugins/sqldrivers/configure.cmake

@@ -9,6 +9,7 @@
 qt_find_package(DB2 PROVIDED_TARGETS DB2::DB2)
 qt_find_package(MySQL PROVIDED_TARGETS MySQL::MySQL)
 qt_find_package(PostgreSQL PROVIDED_TARGETS PostgreSQL::PostgreSQL)
+qt_find_package(Oracle PROVIDED_TARGETS Oracle::OCI)
 qt_find_package(ODBC PROVIDED_TARGETS ODBC::ODBC)
 qt_find_package(SQLite3 PROVIDED_TARGETS SQLite::SQLite3)
 
@@ -33,7 +34,7 @@ qt_feature("sql_mysql" PRIVATE
 )
 qt_feature("sql_oci" PRIVATE
     LABEL "OCI (Oracle)"
-    CONDITION libs.oci OR FIXME
+    CONDITION Oracle_FOUND
 )
 qt_feature("sql_odbc" PRIVATE
     LABEL "ODBC"

src/plugins/sqldrivers/oci/CMakeLists.txt

@@ -0,0 +1,35 @@
+# Generated from oci.pro.
+
+#####################################################################
+## qsqloci Plugin:
+#####################################################################
+
+add_qt_plugin(qsqloci
+    TYPE sqldrivers
+    CLASS_NAME QOCIDriverPlugin
+    SOURCES
+        main.cpp
+        qsql_oci.cpp qsql_oci_p.h
+    DEFINES
+        QT_NO_CAST_FROM_ASCII
+        QT_NO_CAST_TO_ASCII
+    LIBRARIES
+        Qt::CorePrivate
+        Qt::SqlPrivate
+    PUBLIC_LIBRARIES
+        Oracle::OCI
+        Qt::Core
+        Qt::Sql
+)
+
+#### Keys ignored in scope 1:.:.:oci.pro:<TRUE>:
+# OTHER_FILES = "oci.json"
+# PLUGIN_CLASS_NAME = "QOCIDriverPlugin"
+
+## Scopes:
+#####################################################################
+
+extend_target(qsqloci CONDITION APPLE
+    LINK_OPTIONS
+        "-Wl,-flat_namespace,-U,_environ"
+)

util/cmake/helper.py

@@ -223,6 +223,7 @@ _library_map = [
     LibraryMapping('opengl', 'OpenGL', 'OpenGL::GL', resultVariable='OpenGL_OpenGL'),
     LibraryMapping('openssl_headers', 'OpenSSL', 'OpenSSL::SSL_nolink', resultVariable='OPENSSL_INCLUDE_DIR', appendFoundSuffix=False),
     LibraryMapping('openssl', 'OpenSSL', 'OpenSSL::SSL'),
+    LibraryMapping('oci', 'Oracle', 'Oracle::OCI'),
     LibraryMapping('pcre2', 'WrapPCRE2', 'WrapPCRE2::WrapPCRE2', extra = ['REQUIRED']),
     LibraryMapping('posix_iconv', None, None),
     LibraryMapping('pps', 'PPS', 'PPS::PPS'),