Aegisub/m4macros/agi_find_libheader.m4

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AC_DEFUN([AGI_FIND_HEADER],[
file=`echo $2 | $as_tr_sh`
aegisub_save_CPPFLAGS="$CPPFLAGS"
for dir in $3; do
vdir=`echo $dir | $as_tr_sh`
CPPFLAGS="-I$dir"
AC_CACHE_CHECK(
[for $2 in $dir],
[agi_cv_header_${vdir}_${file}],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <$2>])],
[eval agi_cv_header_${vdir}_${file}="yes"; found="${dir}"],
[eval agi_cv_header_${vdir}_${file}="no"; found=""])
])
if test -n "$found"; then
break;
fi
done
if test -n "$found"; then
$1_CFLAGS="-I$found"
fi
CPPFLAGS="$aegisub_save_CPPFLAGS"
])
AC_DEFUN([AGI_FIND_LIB],[
aegisub_save_LIBS="$LIBS"
if test -n "$3"; then
LDDIR="-L$3"
fi
for lib in $2; do
vlib=`echo $lib | $as_tr_sh`
LIBS="$LDDIR -l$lib"
AC_CACHE_CHECK(
[for -l${lib}],
[agi_cv_lib_${vlib}],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM()],
[eval agi_cv_lib_${vlib}="yes"; found="${lib}"],
[eval agi_cv_lib_${vlib}="no"; found=""])
])
if test -n "$found"; then
break;
fi
done
if test -n "$found"; then
$1_LIBS="$LDDIR -l$found"
fi
LIBS="$aegisub_save_LIBS"
])