/GNUmakefile

<literal>-L/usr/local/pgsql/lib</literal> to that command line.

</para>

<para>

You can

use <command>pg_config</command><indexterm><primary>pg_config</primary><secondary sortas="ecpg">with

ecpg</secondary></indexterm>

or <command>pkg-config</command><indexterm><primary>pkg-config</primary><secondary sortas="ecpg">with

ecpg</secondary></indexterm> with package name <literal>libecpg</literal> to

get the paths for your installation.

</para>

<para>

If you manage the build process of a larger project using

<application>make</application>, it might be convenient to include

</screen>

</para>

<para>

If you

have <command>pkg-config</command><indexterm><primary>pkg-config</primary><secondary sortas="libpq">with

libpq</secondary></indexterm> installed, you can run instead:

<screen>

<prompt>$</prompt> pkg-config --cflags libpq

<computeroutput>-I/usr/local/include</computeroutput>

</screen>

Note that this will already include the <option>-I</option> in front of

the path.

</para>

<para>

Failure to specify the correct option to the compiler will

result in an error message such as:

</screen>

</para>

<para>

Or again use <command>pkg-config</command>:

<screen>

<prompt>$</prompt> pkg-config --libs libpq

<computeroutput>-L/usr/local/pgsql/lib -lpq</computeroutput>

</screen>

Note again that this prints the full options, not only the path.

</para>

<para>

Error messages that point to problems in this area could look like

the following:

# Testing the soname variable is a reliable way to determine whether a

# linkable library is being built.

soname= $(shlib_major)

pkgconfigdir = $(libdir)/pkgconfig

else

# Naming convention for dynamically loadable modules

shlib= $(NAME)$(DLSUFFIX)

ifdef soname

# no static library when building a dynamically loadable module

all-lib: all-static-lib

all-lib: lib$(NAME).pc

endif

all-static-lib: $(stlib)

endif # PORTNAME == cygwin || PORTNAME == win32

%.pc: $(MAKEFILE_LIST)

echo 'Name: lib$(NAME)' >$@

echo 'Description: PostgreSQL lib$(NAME) library' >>$@

echo 'Url: http://www.postgresql.org/' >>$@

echo 'Version: $(VERSION)' >>$@

echo 'Requires: ' >>$@

echo 'Requires.private: $(PKG_CONFIG_REQUIRES_PRIVATE)' >>$@

echo 'Cflags: -I$(includedir)' >>$@

echo 'Libs: -L$(libdir) -l$(NAME)' >>$@

# Record -L flags that the user might have passed in to the PostgreSQL

# build to locate third-party libraries (e.g., ldap, ssl). Filter out

# those that point inside the build or source tree. Use sort to

# remove duplicates. Also record the -l flags necessary for static

# linking, but not those already covered by Requires.private.

echo 'Libs.private: $(sort $(filter-out -L.% -L$(top_srcdir)/%,$(filter -L%,$(LDFLAGS) $(SHLIB_LINK)))) $(filter-out $(PKG_CONFIG_REQUIRES_PRIVATE:lib%=-l%),$(filter -l%,$(SHLIB_LINK)))' >>$@

# We need several not-quite-identical variants of .DEF files to build

# DLLs for Windows. These are made from the single source file

# exports.txt. Since we can't assume that Windows boxes will have

install-lib: install-lib-shared

ifdef soname

install-lib: install-lib-static

install-lib: install-lib-pc

endif

install-lib-pc: lib$(NAME).pc installdirs-lib

$(INSTALL_DATA) $< '$(DESTDIR)$(pkgconfigdir)/lib$(NAME).pc'

install-lib-static: $(stlib) installdirs-lib

$(INSTALL_STLIB) $< '$(DESTDIR)$(libdir)/$(stlib)'

ifeq ($(PORTNAME), darwin)

installdirs-lib:

ifdef soname

$(MKDIR_P) '$(DESTDIR)$(libdir)'

$(MKDIR_P) '$(DESTDIR)$(libdir)' '$(DESTDIR)$(pkgconfigdir)'

else

$(MKDIR_P) '$(DESTDIR)$(pkglibdir)'

endif

rm -f '$(DESTDIR)$(libdir)/$(stlib)'

rm -f '$(DESTDIR)$(libdir)/$(shlib_bare)' \

'$(DESTDIR)$(libdir)/$(shlib_major)' \

'$(DESTDIR)$(libdir)/$(shlib)'

'$(DESTDIR)$(libdir)/$(shlib)' \

'$(DESTDIR)$(pkgconfigdir)/lib$(NAME).pc'

else # no soname

rm -f '$(DESTDIR)$(pkglibdir)/$(shlib)'

endif # no soname

.PHONY: clean-lib

clean-lib:

rm -f $(shlib) $(shlib_bare) $(shlib_major) $(stlib) $(exports_file)

rm -f $(shlib) $(shlib_bare) $(shlib_major) $(stlib) $(exports_file) lib$(NAME).pc

ifneq (,$(SHLIB_EXPORTS))

maintainer-clean-lib:

OBJS= informix.o$(filter snprintf.o,$(LIBOBJS))

PKG_CONFIG_REQUIRES_PRIVATE = libecpg libpgtypes

all: all-lib

.PHONY: submake-ecpglib submake-pgtypeslib

SHLIB_LINK += -lshfolder

PKG_CONFIG_REQUIRES_PRIVATE = libpq libpgtypes

all: all-lib

.PHONY: submake-pgtypeslib