I've just downloaded and tried to build HSQL for MySQL but I'm getting the errors below. mysql.h does exist. Any help would be appreciated. Thanks, Dominic. [dom@tility MySQL]$ ls /usr/include/mysql/mysql.h /usr/include/mysql/mysql.h [dom@tility MySQL]$ ghc Setup.lhs -o Setup -package Cabal-1.0.1 [dom@tility MySQL]$ ./Setup configure Warning: No license-file field. Configuring hsql-mysql-1.6... configure: Using install prefix: /usr/local configure: Using compiler: /usr//bin/ghc configure: Compiler flavor: GHC configure: Compiler version: 6.4 configure: Using package tool: /usr//bin/ghc-pkg configure: Using haddock: /usr//bin/haddock configure: No happy found configure: No alex found configure: Using hsc2hs: /usr//bin/hsc2hs configure: Using c2hs: /usr//bin/c2hs configure: No cpphs found configure: Dependency base-any: using base-1.0 configure: Dependency hsql-any: using hsql-1.6 configure: Using mysql_config: /usr//bin/mysql_config configure: configuring mysqlclient library [dom@tility MySQL]$ more MySQL.buildinfo buildable: True cc-options: ld-options: frameworks: c-sources: extensions: extra-libraries: mysqlclient z crypt nsl m extra-lib-dirs: '/usr//lib/mysql' includes: include-dirs: '/usr//include/mysql' hs-source-dirs: . other-modules: ghc-options: hugs-options: nhc-options: [dom@tility MySQL]$ ./Setup build Preprocessing library hsql-mysql-1.6... In file included from MySQL.hsc:14: /usr/lib/ghc-6.4/include/config.h:4:2: warning: #warning config.h is deprecated; please use ghcconfig.h instead In file included from MySQL.hsc:33: Database/HSQL/HsMySQL.h:8:19: mysql.h: No such file or directory MySQL.hsc: In function `main': MySQL.hsc:90: error: `CLIENT_MULTI_STATEMENTS' undeclared (first use in this function) MySQL.hsc:90: error: (Each undeclared identifier is reported only once MySQL.hsc:90: error: for each function it appears in.) MySQL.hsc:147: error: `MYSQL_FIELD' undeclared (first use in this function) MySQL.hsc:147: error: syntax error before ')' token MySQL.hsc:148: error: syntax error before ')' token MySQL.hsc:149: error: syntax error before ')' token MySQL.hsc:150: error: syntax error before ')' token MySQL.hsc:151: error: syntax error before ')' token MySQL.hsc:154: error: `NOT_NULL_FLAG' undeclared (first use in this function) MySQL.hsc:157: error: `FIELD_TYPE_STRING' undeclared (first use in this function) MySQL.hsc:158: error: `FIELD_TYPE_VAR_STRING' undeclared (first use in this function) MySQL.hsc:159: error: `FIELD_TYPE_DECIMAL' undeclared (first use in this function) MySQL.hsc:160: error: `FIELD_TYPE_SHORT' undeclared (first use in this function) MySQL.hsc:161: error: `FIELD_TYPE_INT24' undeclared (first use in this function) MySQL.hsc:162: error: `FIELD_TYPE_LONG' undeclared (first use in this function) MySQL.hsc:163: error: `FIELD_TYPE_FLOAT' undeclared (first use in this function) MySQL.hsc:164: error: `FIELD_TYPE_DOUBLE' undeclared (first use in this function) MySQL.hsc:165: error: `FIELD_TYPE_TINY' undeclared (first use in this function) MySQL.hsc:166: error: `FIELD_TYPE_LONGLONG' undeclared (first use in this function) MySQL.hsc:167: error: `FIELD_TYPE_DATE' undeclared (first use in this function) MySQL.hsc:168: error: `FIELD_TYPE_TIME' undeclared (first use in this function) MySQL.hsc:169: error: `FIELD_TYPE_TIMESTAMP' undeclared (first use in this function) MySQL.hsc:170: error: `FIELD_TYPE_DATETIME' undeclared (first use in this function) MySQL.hsc:171: error: `FIELD_TYPE_YEAR' undeclared (first use in this function) MySQL.hsc:172: error: `FIELD_TYPE_BLOB' undeclared (first use in this function) MySQL.hsc:173: error: `FIELD_TYPE_SET' undeclared (first use in this function) MySQL.hsc:174: error: `FIELD_TYPE_ENUM' undeclared (first use in this function) Setup: got error code while preprocessing: Database.HSQL.MySQL [dom@tility MySQL]$