[MSYS2/GCC-TDM] Compiler not finding headers in /usr/local/include Post: 302932920

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Top Forums Programming [MSYS2/GCC-TDM] Compiler not finding headers in /usr/local/include Post 302932920 by AntumDeluge on Monday 26th of January 2015 11:13:46 AM

01-26-2015

Registered User

[MSYS2/GCC-TDM] Compiler not finding headers in /usr/local/include

I hope it's okay to post this here. I'm working on Windows computer but using the Unix-like environment MSYS2 (https://sourceforge.net/projects/msys2).

My problem is that I can't get the compiler to find headers located in /usr/local/include. I am trying to compile libpng which wants the header "zlib.h":

Code:

$ ../configure --disable-static LDFLAGS="-L/usr/local/lib" CXXLAGS="-I/usr/local/include"
...
...
...
checking for zlibVersion in -lz... yes
...
...
...

$ make
rm -f pnglibconf.c pnglibconf.tf[45]
gawk -f ../scripts/options.awk out=pnglibconf.tf4 version=search\
    ../pngconf.h ../scripts/pnglibconf.dfa\
    ../pngusr.dfa  1>&2
gawk -f ../scripts/options.awk out=pnglibconf.tf5 pnglibconf.tf4 1>&2
rm pnglibconf.tf4
mv pnglibconf.tf5 pnglibconf.c
rm -f pnglibconf.out pnglibconf.tf[12]
test -d scripts || mkdir scripts || test -d scripts
gcc -E -DHAVE_CONFIG_H -I. -I.. \
     -DPNGLIB_LIBNAME='PNG16_0' -DPNGLIB_VERSION='1.6.16' -DSYMBOL_PREFIX='' -DPNG_NO_USE_READ_MACROS -DPNG_BUILDING_SYMBOL_TABLE  pnglibconf.c > pnglibconf.tf1
pnglibconf.c:33:19: fatal error: zlib.h: No such file or directory
 # include <zlib.h>
                   ^
compilation terminated.
Makefile:2143: recipe for target 'pnglibconf.out' failed
make: *** [pnglibconf.out] Error 1

$ ls /usr/local/include | grep zlib
zlib.h

I have no clue why it's not finding it.

[code]$ whereis ld
ld: /mingw64tdm/bin/ld.exe

$ ld --verbose | grep SEARCH
SEARCH_DIR("/mingw64tdm/x86_64-w64-mingw32/lib"); SEARCH_DIR("/mingw64tdm/lib"); SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib"); SEARCH_DIR("/usr/lib");[/code]

Anyone have any ideas?

--- Edit ---

Sorry, that part about the linker was not necessary.

--- Edit ---

Ugh! I was using the wrong variable. "CXXFLAGS" should have been "CPPFLAGS".

Last edited by AntumDeluge; 01-26-2015 at 12:27 PM.. Reason: Delete linker command.

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itpp-config

itpp-config(1)						      General Commands Manual						    itpp-config(1)

NAME

       itpp-config - script to get information about intalled IT++ library prefix, compiler flags and its version

SYNOPSIS

       itpp-config [--prefix] [--exec-prefix] [--debug] [--static]
		   [--cflags] [--libs] [--help] [--version]

DESCRIPTION

       itpp-config  is	a  tool  that  can be used to determine the compiler and linker flags required for compiling and linking programs that use
       IT++.  It can be also used for checking the intalled libitpp library version.

OPTIONS

       itpp-config accepts the following options:

       --prefix
	      output libitpp installation prefix

       --exec-prefix
	      output libitpp installation exec prefix

       --debug
	      use debugging pre-processor, compiler and linker flags (needs to be used in front of --cflags and --libs)

       --static
	      use static linker flags (needs to be used in front of --libs)

       --cflags
	      output pre-processor and compiler flags

       --libs output linker flags

       --help display brief help and exit

       --version
	      output version number

AUTHOR

       This manual page was written by Adam Piatyszek <ediap@users.sourceforge.net> as a text file, then converted to man format by txt2tags.

COPYRIGHT

       Copyright (C) 1995-2010	(see AUTHORS file for a list of contributors)

       This file is part of IT++ - a C++ library of mathematical, signal processing, speech processing, and communications classes and functions.

       IT++ is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the  Free
       Software Foundation, either version 3 of the License, or (at your option) any later version.

       IT++  is  distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with IT++.  If not, see <http://www.gnu.org/licenses/>.

IT++ 4.2							  September 2010						    itpp-config(1)