blob: bf05b425f967678c6d2797669e68d0360bb6a797 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
# beginning of libpng.ac
if test "$needs_pnglib" = no; then
LIBPNGCPPFLAGS=
LDLIBPNG=
LIBPNGDEP=
else
EXTRA_LIBPNG_INCLUDE=
EXTRA_LIBPNG_LIBDIR=
if test "$with_system_pnglib" = yes; then
if test "x$with_pnglib_libdir" != x; then
EXTRA_LIBPNG_LIBDIR="-L$with_pnglib_libdir"
fi
if test "x$with_pnglib_include" != x; then
EXTRA_LIBPNG_INCLUDE="-I$with_pnglib_include"
fi
fi
OLD_LDFLAGS=$LDFLAGS
OLD_CPP=$CPP
OLD_LIBS=$LIBS
LDFLAGS="$LDFLAGS $EXTRA_LIBPNG_LIBDIR"
CPP="$CPP $EXTRA_LIBPNG_INCLUDE"
if test "$with_system_pnglib" = yes; then
AC_CHECK_LIB(png, png_set_read_fn,
pnglib=-lpng,
AC_MSG_WARN(Standard PNG library not found. Compiling my own.)
with_system_pnglib=no,
-lz -lm)
fi
LDFLAGS=$OLD_LDFLAGS
CPP=$OLD_CPP
LIBS=$OLD_LIBS
if test "$with_system_pnglib" != yes; then
LIBPNGCPPFLAGS='-I$(LIBPNGDIR) -I$(LIBPNGSRCDIR)'
LDLIBPNG='$(LIBPNGDIR)/libpng.a'
LIBPNGDEP='$(LIBPNGDIR)/libpng.a'
using_system_pnglib=no
else
LIBPNGCPPFLAGS="$EXTRA_LIBPNG_INCLUDE"
LDLIBPNG="$EXTRA_LIBPNG_LIBDIR -lpng"
LIBPNGDEP=
using_system_pnglib=yes
fi
fi
AC_SUBST(LIBPNGCPPFLAGS)
AC_SUBST(LDLIBPNG)
AC_SUBST(LIBPNGDEP)
# end of libpng.ac
|