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configure: make it work without PKG_CHECK_MODULES

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With commit c2f9b78 we added a new dependency on pkg-config for
developers which may be unwanted. This change make the configure script
still work as before if pkg-config isn't installed, it'll just use the
old zlib detection logic without pkg-config.

Reported-by: Marc Hörsken

Fixes #972
This commit is contained in:
Daniel Stenberg 2016-08-21 23:34:48 +02:00
parent fba9dec5c5
commit 95ded2c569
1 changed files with 4 additions and 1 deletions
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5
configure.ac
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@ -892,13 +892,16 @@ else
fi
if test -z "$OPT_ZLIB" ; then
PKG_CHECK_MODULES([ZLIB], [zlib],
m4_ifdef([PKG_CHECK_MODULES], [
PKG_CHECK_MODULES([ZLIB], [zlib],
[ LIBS="${ZLIB_LIBS} $LIBS"
CPPFLAGS="${ZLIB_CFLAGS} $CPPFLAGS"
HAVE_LIBZ="1"
],
[
])
])
if test -z "$HAVE_LIBZ"; then