1*4882a593SmuzhiyunFrom c154195fa161575363280aac9e928b7225f0de9e Mon Sep 17 00:00:00 2001 2*4882a593SmuzhiyunFrom: "Yann E. MORIN" <yann.morin.1998@free.fr> 3*4882a593SmuzhiyunDate: Sun, 29 Dec 2019 17:42:13 +0100 4*4882a593SmuzhiyunSubject: [PATCH] configure: fix detection of fltk libs 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunChaining calls to AC_CHECK_LIB one in the other, breaks the configure 7*4882a593Smuzhiyunscript, because some internal functions (e.g. ac_fn_c_try_link) would 8*4882a593Smuzhiyunnot be defined before they are needed, leading the build to fail as 9*4882a593Smuzhiyunthus: 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun checking for snd_tplg_new in -latopology... ./configure: line 4630: 12*4882a593Smuzhiyun ac_fn_c_try_link: command not found 13*4882a593Smuzhiyun no 14*4882a593Smuzhiyun configure: error: No linkable libatopology was found. 15*4882a593Smuzhiyun 16*4882a593SmuzhiyunUsing AC_CHECK_LIB() in sequence (i.e. one after the other) and 17*4882a593Smuzhiyunmemorising the result is not trivial: AC_CHECK_LIB() implements a 18*4882a593Smuzhiyunddefault action-if-found that append to LIBS, but not if the user 19*4882a593Smuzhiyunptrovides their own action-if-found. 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunInstead, AC_SEARH_LIBS() always append to LIBS, *and* run the 22*4882a593Smuzhiyunuser-provided action. 23*4882a593Smuzhiyun 24*4882a593SmuzhiyunSo, we switch to AC_SEARCH_LIBS() and memorise the result for each 25*4882a593Smuzhiyuntest, to eventually test if ether worked. 26*4882a593Smuzhiyun 27*4882a593SmuzhiyunSigned-off-by: Yann E. MORIN <yann.morin.1998@free.fr> 28*4882a593Smuzhiyun--- 29*4882a593Smuzhiyun configure.in | 8 ++++---- 30*4882a593Smuzhiyun 1 file changed, 4 insertions(+), 4 deletions(-) 31*4882a593Smuzhiyun 32*4882a593Smuzhiyundiff --git a/configure.in b/configure.in 33*4882a593Smuzhiyunindex 9307cc2..55f6864 100644 34*4882a593Smuzhiyun--- a/configure.in 35*4882a593Smuzhiyun+++ b/configure.in 36*4882a593Smuzhiyun@@ -11,10 +11,10 @@ AC_PROG_INSTALL 37*4882a593Smuzhiyun AC_PROG_LN_S 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun dnl Checks for libraries. 40*4882a593Smuzhiyun-AC_CHECK_LIB(fltk,numericsort,, 41*4882a593Smuzhiyun-AC_CHECK_LIB(fltk,fl_numericsort,, 42*4882a593Smuzhiyun-AC_MSG_ERROR("missing fltk")) 43*4882a593Smuzhiyun-) 44*4882a593Smuzhiyun+has_fltk=false 45*4882a593Smuzhiyun+AC_SEARCH_LIBS(numericsort,fltk,has_fltk=true) 46*4882a593Smuzhiyun+AC_SEARCH_LIBS(fl_numericsort,fltk,has_fltk=true) 47*4882a593Smuzhiyun+AS_IF(test "${has_fltk}" = "false", AC_MSG_ERROR("missing fltk")) 48*4882a593Smuzhiyun AM_PATH_ALSA(0.9.0) 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun dnl Checks for header files. 51*4882a593Smuzhiyun-- 52*4882a593Smuzhiyun2.20.1 53*4882a593Smuzhiyun 54