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* Better libgccjit related error messaging during configure

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* configure.ac: Distinguish the case when libgccjit is missing,
	its headers are missing, or libgccjit is broken.  Message the user
	based on that.
This commit is contained in:
Andrea Corallo 2020-10-07 08:40:00 +02:00
parent 4a1bb46260
commit bd27257965
1 changed files with 16 additions and 3 deletions
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19
configure.ac
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@ -3779,15 +3779,25 @@ AC_DEFUN([libgccjit_smoke_test], [
AC_DEFUN([libgccjit_not_found], [
AC_MSG_ERROR([elisp native compiler requested but libgccjit not found.
Please try installing libgccjit or similar package.
If you are sure you want Emacs compiled without elisp native compiler, pass
--without-nativecomp
to configure.])])
AC_DEFUN([libgccjit_dev_not_found], [
AC_MSG_ERROR([elisp native compiler requested but libgccjit header files were
not found.
Please try installing libgccjit-dev or similar package.
If you are sure you want Emacs compiled without elisp native compiler, pass
--without-nativecomp
to configure.])])
AC_DEFUN([libgccjit_broken], [
AC_MSG_ERROR([Installed libgccjit has failed passing the smoke test.
You can verify it yourself compiling:
<https://gcc.gnu.org/onlinedocs/jit/intro/tutorial01.html>.
Please report the issue to your distribution.
Please report the issue to your distribution if libgccjit was installed through
that.
Here instructions on how to compile and install libgccjit from source:
<https://gcc.gnu.org/wiki/JIT>.])])
@ -3800,10 +3810,13 @@ if test "${with_nativecomp}" != "no"; then
if test "${HAVE_ZLIB}" = no; then
AC_MSG_ERROR(['--with-nativecomp' requires zlib])
fi
# Check if libgccjit is available.
AC_CHECK_LIB(gccjit, gcc_jit_context_acquire, [], [libgccjit_not_found])
AC_CHECK_HEADERS(libgccjit.h, [], [libgccjit_dev_not_found])
emacs_save_LIBS=$LIBS
LIBS="-lgccjit"
AC_RUN_IFELSE([libgccjit_smoke_test], [], [libgccjit_broken],
[AC_LINK_IFELSE([libgccjit_smoke_test], [], [libgccjit_not_found])])
# Check if libgccjit really works.
AC_RUN_IFELSE([libgccjit_smoke_test], [], [libgccjit_broken])
LIBS=$emacs_save_LIBS
HAVE_NATIVE_COMP=yes
# mingw32 loads the library dynamically.