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Currently the pc files use hard coded paths for "includedir" and "libdir." Example: Cflags: -I/usr/include Libs: -L/usr/lib -lpq This is not very fortunate when cross compiling inside a buildroot, where the includes and libs are inside a staging directory, because this introduces host paths into the build: checking for pkg-config... /builder/shared-workdir/build/sdk/staging_dir/host/bin/pkg-config checking for PostgreSQL libraries via pkg_config... -L/usr/lib <---- This commit addresses this by doing the following two things: 1. Instead of hard coding the paths in "Cflags" and "Libs" "${includedir}" and "${libdir}" are used. Note: these variables can be overriden on the pkg-config command line ("--define-variable=libdir=/some/path"). 2. Add the variables "prefix" and "exec_prefix". If "includedir" and/or "libdir" are using these then construct them accordingly. This is done because buildroots (for instance OpenWrt) tend to rename the real pkg-config and call it indirectly from a script that sets "prefix", "exec_prefix" and "bindir", like so: pkg-config.real --define-variable=prefix=${STAGING_PREFIX} \ --define-variable=exec_prefix=${STAGING_PREFIX} \ --define-variable=bindir=${STAGING_PREFIX}/bin $@ Example #1: user calls ./configure with "--libdir=/some/lib" and "--includedir=/some/include": prefix=/usr/local/pgsql exec_prefix=${prefix} libdir=/some/lib includedir=/some/include Name: libpq Description: PostgreSQL libpq library Url: http://www.postgresql.org/ Version: 12.1 Requires: Requires.private: Cflags: -I${includedir} Libs: -L${libdir} -lpq Libs.private: -lcrypt -lm Example #2: user calls ./configure with no arguments: prefix=/usr/local/pgsql exec_prefix=${prefix} libdir=${exec_prefix}/lib includedir=${prefix}/include Name: libpq Description: PostgreSQL libpq library Url: http://www.postgresql.org/ Version: 12.1 Requires: Requires.private: Cflags: -I${includedir} Libs: -L${libdir} -lpq Libs.private: -lcrypt -lm Like this the paths can be forced into the staging directory when using a buildroot setup: checking for pkg-config... /home/sk/tmp/openwrt/staging_dir/host/bin/pkg-config checking for PostgreSQL libraries via pkg_config... -L/home/sk/tmp/openwrt/staging_dir/target-mips_24kc_musl/usr/lib Author: Sebastian Kemper <sebastian_ml@gmx.net> Co-authored-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com> Discussion: https://www.postgresql.org/message-id/flat/20200305213827.GA25135%40darth.lan |
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contrib | ||
doc | ||
src | ||
.dir-locals.el | ||
.editorconfig | ||
.git-blame-ignore-revs | ||
.gitattributes | ||
.gitignore | ||
aclocal.m4 | ||
configure | ||
configure.ac | ||
COPYRIGHT | ||
GNUmakefile.in | ||
HISTORY | ||
Makefile | ||
README | ||
README.git |
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.