sci-chemistry/chemtool: Port to EAPI 7

* fix `-fno-common`/GCC 10
* fix broken check target

Closes: https://bugs.gentoo.org/708234
Closes: https://bugs.gentoo.org/728954
Package-Manager: Portage-3.0.4, Repoman-3.0.1
Signed-off-by: David Seifert <soap@gentoo.org>

3 files changed, 43 insertions, 0 deletions

diff --git a/sci-chemistry/chemtool/files/chemtool-1.6.14-fix-tests.patch b/sci-chemistry/chemtool/files/chemtool-1.6.14-fix-tests.patch
new file mode 100644
index 000000000000..755ae3f01914
--- /dev/null
+++ b/sci-chemistry/chemtool/files/chemtool-1.6.14-fix-tests.patch
@@ -0,0 +1,6 @@
+--- /dev/null
++++ b/src-cht/Makefile.am
+@@ -0,0 +1,3 @@
++bin_PROGRAMS = cht
++
++cht_SOURCES = cht.c
diff --git a/sci-chemistry/chemtool/files/chemtool-1.6.14-fno-common.patch b/sci-chemistry/chemtool/files/chemtool-1.6.14-fno-common.patch
new file mode 100644
index 000000000000..d782f8e4a625
--- /dev/null
+++ b/sci-chemistry/chemtool/files/chemtool-1.6.14-fno-common.patch
@@ -0,0 +1,37 @@
+--- a/ct1.h
++++ b/ct1.h
+@@ -273,12 +273,12 @@
+ extern float importfactor;
+ extern int importoffset;
+ 
+-char **intype;
+-char **inmode;
+-int babelin;
+-char **outtype;
+-char **outmode;
+-int babelout;
++extern char **intype;
++extern char **inmode;
++extern int babelin;
++extern char **outtype;
++extern char **outmode;
++extern int babelout;
+ extern char *babel;
+ extern GdkGC *mygc[8],*background_gc,*hlgc;
+ extern int curpen;
+--- a/inout.c
++++ b/inout.c
+@@ -30,6 +30,13 @@
+ extern GdkFont *font[7],*smallfont[7],*symbfont[7],*boldfont[7],*slfont[7];
+ #endif
+ 
++char **intype;
++char **inmode;
++int babelin;
++char **outtype;
++char **outmode;
++int babelout;
++
+ static char babeloutp[4];
+ 
+ int
diff --git a/sci-chemistry/chemtool/files/1.6.13-no-underlinking.patch b/sci-chemistry/chemtool/files/chemtool-1.6.14-no-underlinking.patch
index 5d2fe36d6bf1..5d2fe36d6bf1 100644
--- a/sci-chemistry/chemtool/files/1.6.13-no-underlinking.patch
+++ b/sci-chemistry/chemtool/files/chemtool-1.6.14-no-underlinking.patch